Page 1 CENTRIFUGAL LIQUID CHILLERS SERVICE INSTRUCTIONS Supersedes: 160.54-M1 (402) Form 160.54-M1 (503) OPTIVIEW™ CONTROL CENTER 371-02264-101 371-02778-103 (Electro-Mechanical Starter - NEMA 1) (Variable Speed Drive - NEMA 1-4) (P Compressors until 8/02) 371-02486-101 (Electro-Mechanical Starter - CE) 371-02780-103 (Variable Speed Drive - CE) 371-02448-101 (Electro-Mechanical Starter - NEMA 4/12) (P Compressors until 8/02)
Page 2 All wir ing must be in ac cor dance with YORK’s pub lished spec i ﬁ ca tions and must be per formed ONLY by qual i ﬁ ed YORK personnel.
Page 3 YORK Applied is available. Systems Service ofﬁ ce.
Page 4: Table Of Contents
Leaving Chilled Liquid Temperature Control Sensitivity ............143 Drop Leg Refrigerant Temperature.................... 144 Smart Freeze Protection ......................144 Evaporator Refrigerant Temperature ..................144 Hot Gas Bypass Control ......................144 Chiller Starts and Operating Hours Reset ................. 145 Service Phone Numbers ......................146 Surge Protection........................146 YORK INTERNATIONAL...
Page 5 SI0006 - Software Enhancements Effective May 2001 ............. 168 SI0019 - Software Enhancements Effective March 2002 ............170 SI0034 (203) - Software Enhancements Effective AUGUST 2002........... 174 SI0058 - Software Enhancements Effective February 2003............178 SI0062 - Software Enhancements Effective March 2003 ............180 YORK INTERNATIONAL...
Page 6 FIG. 39 – MOD “B” LIQUID COOLED SOLID STATE STARTER (LCSSS) - INTERFACE ..... 70 FIG. 40 – SOLID STATE STARTER LOGIC BOARD ..............71 FIG. 41 – MOD “A” LIQUID COOLED SOLID STATE STARTER (LCSSS) - INTERFACE ..... 74 YORK INTERNATIONAL...
Page 7 FIG. 69 – SERIAL INPUTS / OUTPUTS TEST SCREEN ............. 157 FIG. 70 – MICROBOARD - COM 5 SERIAL DATA PORT............. 158 FIG. 71 – DIGITAL INPUTS / OUTPUTS TEST SCREEN ............159 FIG. 72 – ANALOG INPUTS TEST SCREEN ................162 YORK INTERNATIONAL...
Page 8: Section 1 - Introduction
Safety shutdowns require special reset pro ce dures to be performed before the chiller can be re start ed. • YORK Form 160.54-PW8 – Chillers (“P” Com pres - Since the op er at ing program sup plied in each OptiView...
Page 9 Use the Di ag nos tic Routines where appropriate. Diagnostic Routines allow service analysis of the fol- low ing functions: • Display • Analog inputs • Digital inputs • Digital outputs • Serial Data ports YORK INTERNATIONAL...
Page 10: Section 2 - System Architecture
• Controls the compressor motor starter and con tains • Power Supply a printed circuit board logic that supports Electro- Mechanical Starters, Solid State Starters and YORK In addition to the standard components, the OptiView Vari able Speed Drive. Control Center contains a printed circuit board that...
Page 11 “F” and later chillers have a different Condenser High include: Pressure Safety Cutout Switch (HPCO) than sup plied on other compressor ap pli ca tions. This switch is mount ed • High Speed Thrust bearing proximity sensing – Proximity Probe or Limit Switch YORK INTERNATIONAL...
Page 12 (condenser)(refer to ﬁ g 12). Flash Memory Card version C.MLM.01.07.xxx and C.MLM.01.07A.xxx Serial data interface to the YORK ISN Building Au to - automatically selects the Flow Sensor input, either ma tion System is through the optional MicroGateway.
Page 13 FORM 160.54-M1(503) YORK INTERNATIONAL...
Page 14 System Ar chi tec ture FORM 160.54-M1(503) YORK INTERNATIONAL...
Page 15 FORM 160.54-M1(503) YORK INTERNATIONAL...
Page 16 System Ar chi tec ture FORM 160.54-M1(503) YORK INTERNATIONAL...
Page 17: Fig. 5 - Operation Sequence Timing Diagram
BYPASS 150 SEC. SWITCH (2.5 MIN) 1800 VANES VANES START (0.17) (0.22) (0.75) (0.83) (1.83) START CLOSED (30) RESTART CLOSE TIME IN SECONDS (MINUTES) LD06502 FIG. 5 – OPERATION SEQUENCE TIMING DIAGRAM (ELECTRO-MECHANICAL & SOLID STATE STARTER APPLICATIONS) YORK INTERNATIONAL...
Page 18: Fig. 6 - Operation Sequence Timing Diagram
(1.83) START CLOSED (10) START RESTART RESTART (IF FIVE SUCCESSIVE CLOSE (ONLY AFTER FIFTH RESTARTS HAVE NOT TIME IN SECONDS (MINUTES) SUCCESSIVE RESTART) OCCURED) LD06504 FIG. 6 – OPERATION SEQUENCE TIMING DIAGRAM (COMPRESSOR MOTOR VARIABLE SPEED DRIVE APPLICATIONS) YORK INTERNATIONAL...
Page 19: Section 3 - Microboard
With the exception of a write/read se quence that occurs during the Boot-up * Refer to YORK Renewal Parts List 160.54-RP1 for available process ex plained below, this device is used primarily languages.
Page 20 Center com po nents and thus the position is de ter mined Dig i tal Inputs. When an operator presses a key to request by the YORK Factory. The required position of each a display, the Micro in ter prets the request, re trieves the is listed in these tables.
Page 21 Card at the time the Card was initially programmed at 031-01796-001. This eprom is no longer used. It has been the YORK fac to ry. If both val ues are the same, it is su per ced ed by BIOS eprom 031-01796-002. IM POR - con sid ered pass.
Page 22 Mi cro. As each address is ap plied to the MUX, the input cor re spond ing to that ad dress is passed through the MUX to the A/D Con vert er. The YORK INTERNATIONAL...
Page 23 ﬁ ed to read and process the tive Capacity Control board. in put. Un less YORK doc u men ta tion COM 1 is connected directly to the Micro. COM 2 shows a de vice con nect ed to the in put through 5 are connected directly to the UART (Uni ver sal with a de ﬁ...
Page 24 It also reads wire jumpers PID0 through PID3 (via JP5) to high voltage AC (500 to 1500VAC). This high Microboard J5) on the Display Interface Board to voltage AC is applied to the lamp to cause it to illumi- YORK INTERNATIONAL...
Page 25 The operating principle of the 3.6 x 3.8 inch printed circuit boards (PC-104 Mod ules) sensor is thermal conductivity. It uses the cooling effect on the Microboard. The circuits on these boards have ac- YORK INTERNATIONAL...
Page 26 Service replacement Microboards are supplied un der (refer to ﬁ g 12). After power is applied, there is a ther- the following YORK part numbers: mal warm-up period of up to 20 seconds. During this time, the output could be unstable. When setpoint (or •...
Page 27 If the Microboard is replaced within the Warranty Pe- ri od, re turn the defective board along with any unused Flash Memory Cards to YORK per the Warranty Re turn Pro ce dure. If Flash Mem o ry Card 031-01797- 001 is used, it must be a ver sion C.MLM.01.04 or later (ie, .05, .06,...
Page 28: Fig. 7 - Microboard
Microboard FORM 160.54-M1(503) LD07776 FIG. 7 – MICROBOARD YORK INTERNATIONAL...
Page 29: Fig. 8 - Flash Memory Card
WRITE PROTECT SWITCH (OPTIONAL) (MUST BE IN "ENABLED POSITION") PAD 60 PAD 31 PAD 30 PAD 1 CINS CINS 3V/5V ALIGNMENT NOTCH LD04049 MEMORY CARD - SIDE VIEW WRITE ENABLED WRITE DISABLED LD04050 FIG. 8 – FLASH MEMORY CARD YORK INTERNATIONAL...
Page 30: Fig. 9 - Microboard
Microboard FORM 160.54-M1(503) FIG. 9 – MICROBOARD YORK INTERNATIONAL...
Page 31 Pins 1-2: +12VDC/0VDC SHARP LQ10D421 OUT: Not Used. dis play. Pins 1-2: Not Used. Pins 2-3: +5VDC/0VDC SHARP LQ10D367 Pins 2-3: Style F and later chillers with factory mounted condenser thermal-type ﬂ ow sensor. YORK INTERNATIONAL...
Page 32 JP38 - BIOS EPROM U45 size. Jumper must be po si - JP31 - PC-104 Port DMA assignment. Assigns se lect ed tioned according to size of U45. Jumper is a 10 PC-104 DMA request to PIRQ1 on the mi cro pro - YORK INTERNATIONAL...
Page 33 - sary to do so during trou ble shoot ing. OFF: Standard prerun. “System Prelube” pe ri od is 50 seconds in duration. Oil Pump runs for 37 seconds. YORK INTERNATIONAL...
Page 34: Fig. 10 - Microboard Lamp Dimmer Circuit
TB2-44/45) op er a tion when chiller shuts down on various CY CLING shutdowns. dis able the watch dog pro tec tion is pro vid ed for YORK fac to ry test ing ON: Enhanced operation. Contacts open at com ple tion of System Coastdown after all only.
Page 35: Fig. 11 - Microboard Serial Data Communications Ports
1. Microboard Program Jumper JP27 determines whether COM 4A or 4B can be used. 1 & 2 - 4A, 2 & 3, 4B. Refer to Table 1. 2. J15-4 Loop-Around Test IN. J15-5 Loop-Around Test OUT. Re fer to Fig. 70 for details. FIG. 11 – MICROBOARD SERIAL DATA COM MU NI CA TIONS PORTS YORK INTERNATIONAL...
Page 36: Fig. 12 - Configurable Analog & Remote Setpoint Inputs
2. Applies to Flash Memory Card version C.MLM.01.07.xxx and later. Program Jumpers JP21 and JP22 must be on pins 2-3 on style F and later chillers equipped with factory-mounted thermal-type ﬂ ow sensors. FIG. 12 – CONFIGURABLE ANALOG & REMOTE SETPOINT INPUTS YORK INTERNATIONAL...
Page 37: Section 4 - I/O Board
(<+1VDC) when com- 2. To turn the Triac off, the Microboard opens its input manding a relay to energize. to the Triac Driver and allows the input to pull up to +12VDC. The Triac Driver responds by opening the YORK INTERNATIONAL...
Page 38 “SYSTEM COASTDOWN” un less the the Keypad COMPRESSOR switch is placed in the chiller is equipped with the Mod “B” Solid State Starter. Stop-Reset (O) position, where up on they open. YORK INTERNATIONAL...
Page 39: Fig. 13 - I/O Board
K13 - Compressor Motor Starter (start) (TB1-6/16) Run Status (TB2-35/36) Contacts close coincident with the beginning of “Sys- Contacts operate the same as K14. tem Run”. They remain closed for 0.2 seconds and then open. LD04055 FIG. 13 – I/O BOARD YORK INTERNATIONAL...
Page 40: Fig. 14 - I/O Board Digital Inputs
Memory Card version C.MLM.01.08.xxx or later versions) TB4 - 82 J1 -19 NOT USED TB4 - 1 115VAC TB4 - 95 J1 -20 NOT USED TB4 - 1 115VAC TB3 - 1 115VAC FIG. 14 – I/O BOARD DIGITAL INPUTS LD06856 YORK INTERNATIONAL...
Page 41: Fig. 15 - I/O Board Typical Opto-Coupler Circuit
FIG. 15 – I/O BOARD TYPICAL OPTO-COUPLER CIRCUIT TB4 - X OPTO- J1 - Y COUPLER 115VAC TB4 - 1 TB3 - 1 FIELD SUPPLIED DRY CONTACTS (RATED 5MA @ 115VAC) LD04058 FIG. 16 – I/O BOARD TYPICAL FIELD CONNECTIONS YORK INTERNATIONAL...
Page 42: Fig. 17 - I/O Board Digital Outputs
TB1 - 1 TB1- 61 OIL RETURN SOLENOID (ALL STYLES) (LIQUID LINE SOLENOID - TB1 - 1 (Style D and later chillers) J-COMPRESSOR ONLY) VENT LINE SOLENOID (Style C and earlier chillers) FIG. 17 – I/O BOARD DIGITAL OUTPUTS LD09042 YORK INTERNATIONAL...
Page 43 Board (Solid State Starter Applications) or VSD Logic Board (Compressor Motor Variable Speed Drive Applications). 3. Chillers equipped with “P” compressors and all style "F" and later chillers use a different High Pressure (HP) Switch and associated interface than other compressor applications. FIG. 17 (CONT’D) – I/O BOARD DIGITAL OUTPUTS YORK INTERNATIONAL...
Page 44 DRIVER CLOSE TB1-163 FIELD 115VAC REFRIGERANT TB1-161 LEVEL CONTROL ACTUATOR (BELIMO) REFRIGERANT J1-29 TRIAC LEVEL CONTROL DRIVER OPEN TB1-162 24VAC REFRIGERANT J1-28 TRIAC LEVEL CONTROL DRIVER CLOSE TB1-163 115VAC LD04061 FIG. 17 (CONT’D) – I/O BOARD DIGITAL OUTPUTS YORK INTERNATIONAL...
Page 45: Section 5 - Liquid Crystal Display
Under Program control, the Display Controller on the Microboard sends a drive signal for each pixel to cre ate The Display provided in the new chiller or from YORK the image on the display. Each pixel’s drive signal is an as a service replacement part, could be manufactured by 18 bit binary word;...
Page 46 Ser vice mode feature. re place ment lamps are stocked in the YORK Ser vice As described above, in OptiView Control Center ap pli - Parts Dis tri bu tion Center. The lamp is il lu mi nat ed by ca tions, the Display scan is left to right, beginning with applying a high volt age AC (500 to 1500VAC) to it.
Page 47 Ribbon Cable, re place ment Displays are ordered and 1. Remove Control Power from the OptiView Con trol supplied as a Dis play Re place ment Kit (YORK Part Cen ter. Number 331-01771-000) to as sure com po nent com pat i - 2.
Page 48: Fig. 18 - Display, Mounting
2. Remove protective cover from rear of Display. 3. Connect Lamp AC power connector to Back light 3. Disconnect Lamp AC power connector from Back- Inverter Board. light Inverter Board. 4. Apply AC power to OptiView Control Center. LD04062 FIG. 18 – DISPLAY, MOUNTING YORK INTERNATIONAL...
Page 49: Fig. 19 - Liquid Crystal Display Assembly - Sharp Lq10D367 Display
(NOT AVAILABLE) BACKLIT INVERTER BOARD (NOT AVAILABLE) LIQUID CRYSTAL DISPLAY DISPLAY INTERFACE NOTE: SHARP LQ10D421 BOARD (NOT AVAILABLE) 1. Conﬁ gure Microboard Program Jumpers per label. LD04064 FIG. 20 – LIQUID CRYSTAL DISPLAY ASSEMBLY – SHARP LQ10D421 DISPLAY YORK INTERNATIONAL...
Page 50: Fig. 21 - Liquid Crystal Display Assembly - Nec Nl6448Ac33-24 Display
INVERTER (NOT AVAILABLE) BOARD (NOT AVAILABLE) DISPLAY INTERFACE LIQUID CRYSTAL DISPLAY BOARD (NOT AVAILABLE) NEC NL6448AC33-24 LABEL LD04065 NOTE: 1. Conﬁ gure Microboard Program Jumpers per label. FIG. 21 – LIQUID CRYSTAL DISPLAY ASSEMBLY – NEC NL6448AC33-24 DISPLAY YORK INTERNATIONAL...
Page 51: Fig. 22 - Liquid Crystal Display Assembly - Lg Semicon Lp104V2-W
ENABLE PERIOD PERIOD PERIOD 39.72 NS 640 CLKS NOTES: (25.18 1. BP = Back Porch = 4-48 CLKS MHz) 2. FP = Front Porch = 2-16 CLKS LD04066 FIG. 23 – LIQUID CRYSTAL DISPLAY TYPICAL CONTROL SIGNAL TIMING YORK INTERNATIONAL...
Page 52: Fig. 24 - Display (Sharp Lq10D367) Lamp Replacement
LAMP UNIT REAR " ∇ " MARKING AT THE VIEW SIDE OF THE LAMP UNIT ∇ " " MARKING AT THE METAL PORTION AT THE SIDE OF THE MODULE LD04068 FIG. 25 – DISPLAY (SHARP LQ10D421) LAMP REPLACEMENT YORK INTERNATIONAL...
Page 53: Fig. 26 - Display (Nec Nl6448Ac33-24) Lamp Replacement
NOT AVAILABLE AT THIS TIME LD04069 FIG. 26 – DISPLAY (NEC NL6448AC33-24) LAMP REPLACEMENT BEZEL LAMP HOLDER WIRE (white/GND side) RETAINING SCREW WIRE (pink/HOT side) DIRECTION B LD05527 DIRECTION C FIG. 27 – DISPLAY (LG SEMICON LP104V2-W) LAMP REPLACEMENT YORK INTERNATIONAL...
Page 54: Section 6 - Display Interface Board
Interface Boards are avail able in di vid u al ly for ser vice ments of the actual Display installed. When AC power re place ment. The YORK part num ber of the Dis play is applied to the OptiView Control Center, as part of the...
Page 55: Fig. 28 - Display Interface Board
FORM 160.54-M1(503) FIG. 28 – DISPLAY INTERFACE BOARD YORK INTERNATIONAL...
Page 56: Section 7 - Display Backlight Inverter Board
Display mounting plate). applications. How ev er, ser vice replacement Displays are provided in a kit (YORK P/N 331-01771-000) that includes the Under Program control, the Microboard generates the appropriate Back light Inverter Board (refer to “Liquid control signals that are applied to the Backlight In vert er Crystal Display”...
Page 57: Fig. 29 - Display Backlight Inverter Board
CN2 applies the high volt age lamp il lu mi na tion signal to the lamp. NEC model NL6448AC33-24 displays require an NEC 104PWBR1 Backlight Inverter Board (YORK P/N XXX- SHARP model LQ10D421 displays require a XENTEK XXXXX-XXX) (refer to Fig. 31). These boards gen er ate LS520 Backlight Inverter Board (YORK P/N XXX- the lamp illumination high voltage AC from +12VDC.
Page 58: Fig. 30 - Display Backlight Inverter Board
2. 0 - 10K Ohms. 0 Ohms = MIN (0%) Brightness; 10K Ohms = MAX (100%) Brightness. Refer to Fig. 10 and Microboard Program Jumpers JP7 & JP8. 3. Refer to Microboard Program Jumper JP5. 4. N.C. = No Connection. FIG. 31 – DISPLAY BACKLIGHT INVERTER BOARD (NEC NL6448AC33-24) YORK INTERNATIONAL...
Page 59: Section 8 - Keypad
A logic low in any column indicates a key in that col umn the Display and rocker switch openings and apply the and row is pressed. For example, if at the time row 4 Key pad to the door. YORK INTERNATIONAL...
Page 60: Fig. 32 - Keypad
Keypad FORM 160.54-M1(503) LD04074 CONNECTOR FIG. 32 – KEYPAD YORK INTERNATIONAL...
Page 61: Fig. 33 - Keypad
FORM 160.54-M1(503) LD04075 LD04076 FIG. 33 – KEYPAD YORK INTERNATIONAL...
Page 62: Section 9 - Power Supply
ACC Board (VSD ap pli ca tions) as shown in the cir cuits to be powered by the same supply, elim i nat ing any offsets caused by voltage reg u la tor drift. The +3.3VDC Prox im i ty Probe Sec tion of this book. YORK INTERNATIONAL...
Page 63: (Refer To Optiview Control Center Wiring Diagram For Wire Connections)
FORM 160.54-M1(503) YORK INTERNATIONAL...
Page 64: Section 10 - Current Module (Cm-2)
A SYSTEM COAST- FLA value is located on a label adhered to the inside of DOWN is initiated and MOTOR CON TROL LER - the OptiView Control Center door. CON TACTS OPEN is displayed. The chiller cannot YORK INTERNATIONAL...
Page 65 Current Limit at 100% FLA and 100% FLA. 104% FLA. When mo tor current rises to 100% FLA, the Microboard pre vents any further current rise by in hib - it ing further Pre-ro ta tion Vanes (PRV) open ing until it YORK INTERNATIONAL...
Page 66: Fig. 36 - Cm-2 Current Module (Electro-Mechanical Starter Application)
Current Mod ule (CM-2) FORM 160.54-M1(503) LD04079 FIG. 36 – CM-2 CURRENT MODULE (ELECTRO-MECHANICAL STARTER APPLICATION) LD04080 FIG. 37 – CM-2 CURRENT MODULE (ELECTRO-MECHANICAL STARTER APPLICATIONS) YORK INTERNATIONAL...
Page 67: Fig. 38 - Cm-2 Current Module - Interface, Current Transformers
R = 0.247 (CT RATIO) 11-18 200:1 R = 0.370 (CT RATIO) 19-37 200:1 2300-4160 38-123 200:1 R = 0.740 (CT RATIO) 124-264 350:1 265-518 700:1 LD04082 FIG. 38 – CM-2 CURRENT MODULE – INTERFACE, CURRENT TRANSFORMERS & VARIABLE RESISTORS YORK INTERNATIONAL...
Page 68: Section 11 - Solid State Starters
The OptiView Control Center will accommodate either shut down on all LCSSS ini ti at ed shut downs. of two dif fer ent YORK Liquid Cooled Solid State Start- ers (LCSSS). Later production chillers are equipped with After power has been applied to the system, the the Mod “B”...
Page 69 • Three phase line-to-line motor supply voltage tion per formed by the Logic/Trigger Board. This • Input Power (KW) pro tec tion must nev er be disabled unless advised • Three phase SCR module temperature by the YORK factory. • Starter model designation YORK INTERNATIONAL...
Page 70: Fig. 39 - Mod "B" Liquid Cooled Solid State Starter (Lcsss) - Interface
START / STOP STARTER (MOTOR CONTROLLER) INITIATED SHUTDOWN BOARD STOP CONTACTS 115VAC NOTES: LD04648 9 – “CONDOR” Power Supply; 13 – “POWER ONE” Power Supply FIG. 39 – MOD “B” LIQUID COOLED SOLID STATE STARTER (LCSSS) - INTERFACE YORK INTERNATIONAL...
Page 71: Fig. 40 - Solid State Starter Logic Board
A complete description, theory of operation and trou- ble shoot ing instructions of this LCSSS are contained YORK Service Manual 160.46-OM3. 1. As shown in Fig. 41, the Logic Board of this model start er is mounted inside the OptiView Control Center.
Page 72 B and A MOTOR CONTROLLER – CON TACTS OPEN is displayed; if less than 3 seconds, POWER FAULT is dis played. The respective Ph. Rot/Loss or Trig. OOL LED illuminates and re mains il lu mi nat ed until manu- YORK INTERNATIONAL...
Page 73 Phase “A” Compressor Motor Current. 0 to +5VDC spanning range in address 0 above. Phase “B” Compressor Motor Current. 0 to +5VDC spanning range in address 0 above. Phase “C” Compressor Motor Current. 0 to +5VDC spanning range in address 0 above. YORK INTERNATIONAL...
Page 74: Fig. 41 - Mod "A" Liquid Cooled Solid State Starter (Lcsss) - Interface
Solid State Starters FORM 160.54-M1(503) YORK INTERNATIONAL...
Page 75: Section 12 - Adaptive Capacity Control Board
VSD and ACC After communications have been established, the Board is con tained in YORK man u al 160.00-M1. Microboard sends a Fault Data Request command. If there have been any faults detected by the VSD Logic...
Page 76 • Filter Supply Relay - energized/de-en er gized Microboard dis plays a mes sage describing the shut down (re fer to YORK Op er a tion Manual 160.54-O1 for com- • Input Phase Rotation – ABC/CBA plete list ing of mes sag es) and begins sending normal •...
Page 77 The Surge every 4.5 seconds: Map can be cleared. • 3.9 seconds if PRV position >50%. • 3.0 seconds if PRV position >25% but <50%. • 1.5 seconds if PRV position <25%. YORK INTERNATIONAL...
Page 78 SITIVITY Setpoint on the Optiview Evaporator Screen. The 50% se lec tion reduces the magnitude unless ad vised by the YORK Factory. of PRV move ment over the NORMAL selection and the 30% se lec tion reduces it even more. With Flash Mem o ry Card version C.MLM.01.06.xxx and later...
Page 79 When the 15 sec onds have elapsed, a 5 minute time When the PRV’s approach their 100% open position, period is en tered where the speed is inhibited from there is very little PRV movement remaining to com- YORK INTERNATIONAL...
Page 80 • TPD: Harmonic Filter Logic Board 0/+5VDC 1200 mit ted to the ACC Board via the serial com mu ni ca tions baud serial data. link for Delta P/P calculation, these pressures are also • TPE: Harmonic Filter Logic Board Frame pulse. YORK INTERNATIONAL...
Page 81: Fig. 42 - Compressor Motor Variable Speed Drive
RECEIVE LED TRANSMIT (POWER FAIL) RECEIVE MICRO BOARD TRANS MIT MANUAL SURGE POINT SWITCH SURGE MICRO VALID SURGE POINT (GND) LD04084 BRAM EPROM (+5VDC) FIG. 42 – COMPRESSOR MOTOR VARIABLE SPEED DRIVE (VSD) ADAPTIVE CAPACITY CONTROL (ACC) BOARD YORK INTERNATIONAL...
Page 82: Fig. 43 - Adaptive Capacity Control (Acc) Board - Interface
LOGIC MICRO RX SERIAL DATA BOARD BOARD BOARD TX SERIAL DATA SERIAL DATA RX SERIAL DATA HARMONIC FRAME FILTER LOGIC SERIAL DATA BOARD POSITION POWER +24VDC SUPPLY LD04085 FIG. 43 – ADAPTIVE CAPACITY CONTROL (ACC) BOARD - INTERFACE YORK INTERNATIONAL...
Page 83: Fig. 44 - Adaptive Capacity Control (Acc) Board
FORM 160.54-M1(503) YORK INTERNATIONAL...
Page 84: Section 13 - Proximity Probe
“System Calibration, in the BRAM (U52) memory device on the Microboard, Service Setpoints and Reset Procedures” section of this ﬁ eld replacement of either of these items requires the book. Reference Position Setpoint to be pro grammed again. YORK INTERNATIONAL...
Page 85 Flash memory card version C.MLM.01.03 or later. 025-35900-000 +24VDC, +5VDC Production after April 2000. Senses Proximity only. Does not sense High Speed Drain Line Temperature. 025-xxxxx-000 +12/24VDC, +5VDC Future. Senses Proximity only. Does not sense High Speed Drain Line Temperature. YORK INTERNATIONAL...
Page 86: Fig. 45 - Proximity Probe - Interface Probe
FIG. 45 – PROXIMITY PROBE - INTERFACE PROBE PART NUM BER 025-30961-000 +5VDC PROXIMITY PROBE +12VDC (PROXIMITY) MICRO BOARD PROXIMITY +12VDC REFERENCE FOR "PROXIMITY PROBE - LOW SUPPLY VOLTAGE" CYCLING SHUTDOWN +12VDC POWER SUPPLY +5VDC LD05531 FIG. 46 – PROXIMITY PROBE - INTERFACE PROBE PART NUMBER 025-XXXXX-000 (FUTURE) YORK INTERNATIONAL...
Page 87 1. +24VDC Reference for “Proximity Probe - Low Supply Voltage” Cycling Shutdown. 2. CM-2 Board, Solid State Starter Logic Board or Adaptive Capacity Control Board as determined by the Starter Application. FIG. 47 – PROXIMITY PROBE - INTERFACE PROBE PART NUM BER 025-35900-000 YORK INTERNATIONAL...
Page 88: Fig. 48 - Proximity Probe
Proximity Probe FORM 160.54-M1(503) 2.0" + 24VDC PROBE LD06510 YORK PART NUMBER 025-30961-000 2.0" + 24VDC PROBE LD05529a YORK PART NUMBER 025-35900-000 2.75" UNIVERSAL +12 / +24VDC PROBE LD05530 YORK PART NUMBER 025-xxxxx-000 (FUTURE) FIG. 48 – PROXIMITY PROBE YORK INTERNATIONAL...
Page 89: Section 13A - High Speed Thrust Bearing Limit Switch
“System Cal i bra tion and Reset these con tacts is con nect ed to 115VAC. The other side Pro ce dures section of this book. CONTROL CENTER COMPRESSOR BOARD LD06866 FIG. 49 – HIGH SPEED THRUST BEARING LIMIT SWITCH - INTERFACE YORK INTERNATIONAL...
Page 90: Fig. 50- High Speed Thrust Bearing Limit Switch
High Speed Thrust Bearing Limit Switch FORM 160.54-M1(503) PRESSURE SWITCH GRD PIN (GRN/YEL) PINS 1 & 2 (BLK) BREAK-AWAY PROBE GRN/YEL LD06860 FIG. 50– HIGH SPEED THRUST BEARING LIMIT SWITCH YORK INTERNATIONAL...
Page 91: Section 14 - Refrigerant Level Control
Screen. the ﬁ rst 3 minutes of Chiller Run Time has elapsed The desired refrigerant level to be maintained in the (Setting the Valve Preset Time to 0 seconds disables YORK INTERNATIONAL...
Page 92 10% to 50%. (5% to 50% with Flash Memory Card version C.MLM.01.06.xxx and later or C.MLM.04.02.xxx). If the result ex ceeds the Setpoint, the rate in ﬂ u ence in the response will be large; if YORK INTERNATIONAL...
Page 93: Fig. 51 - Refrigerant Liquid Level Sensor
20 - 40% open, shown as 20% open; 40 - 60% open, shown as 40% open; 60 - 80% open, shown as 80% open; 80 - 100% open, shown as 100% open. LD04091 FIG. 51 – REFRIGERANT LIQUID LEVEL SENSOR YORK INTERNATIONAL...
Page 94: Fig. 52 - Refrigerant Liquid Level Control - Interface
Refrigerant Level Control FORM 160.54-M1(503) YORK INTERNATIONAL...
Page 95: Section 15 - Oil Pump Variable Speed Drive
60 Hz for 5 continuous seconds, any range to maintain the pressure to the pro grammed Oil time after the ﬁ rst 30 seconds of SYSTEM Pressure Setpoint. RUN. YORK INTERNATIONAL...
Page 96 Pe ri od Setpoint determines the relative magnitude of cor rec tion ap plied to the VSD output frequency. The larg er the pro grammed value, the greater the amount of cor rec tion above 0.5 Hz is applied. YORK INTERNATIONAL...
Page 97: Fig. 53 - Oil Pump Variable Speed Drive (Vsd)
• TB1-64 - Style E chillers with “P” compressors and OptiView Control Center failure, thermostat 1HTR all Style F and later chillers. opens at 180ºF. OIL PUMP VSD 28782A FIG. 53 – OIL PUMP VARIABLE SPEED DRIVE (VSD) YORK INTERNATIONAL...
Page 98: Fig. 54 - Oil Pump Vsd / Oil Heater Control - Interface
0.7 SEC +12VDC 0VDC 25.0 Hz +12VDC 0VDC 33.5 Hz 0.17 SEC 42.5 Hz 0.35 SEC 51.0 Hz 0.52 SEC 60.0 Hz +12VDC "OFF TIME" 0VDC "ON TIME" LD04094 FIG. 55 – OIL PUMP VSD SPEED CON TROL SIGNAL YORK INTERNATIONAL...
Page 99: Section 16 - Microgateway
The MicroGateway is an optional printed circuit board mode. that pro vides an interface between the OptiView Con trol Center and YORK ISN (Integrated Systems Net work) or In operation, the Microboard provides chiller pres sures, other selected networks. It can be mounted on the upper...
Page 100: Section 17 - Pressure Transducers
Each of the dif fer ent displayed PSID value. When the oil Pump is turned on trans duc ers has a different YORK part number. Fig. 55 following the Auto-zeroing period, the dis played dif- lists the trans duc ers and the application of each one.
Page 101: Fig. 57 - Pressure Transducers
PRESSURE (PSIG) NOMINAL OUTPUT VOLTAGE OIL PRESSURE (LOW SIDE) EVAPORATOR TRANSDUCER (R22 WATER & BRINE APPLICATIONS) (R22 WATER APPLICATIONS) YORK PART NO. 025-28678-004 YORK PART NO. 025-28678-102 025-28678-113 P + 4.375 (P x 4) - 162.5 (75 x V) + 162.5 P = (58.75 x V) - 4.375...
Page 102: Section 18 - Temperature Thermistors
Microboard and converts it to a temperature value. i ous system temperatures. Each type has its own YORK part number. Part numbers are listed in YORK Re new al Each thermistor is connected to the Microboard with two Parts List 160.54-RP2. The Return and Leav ing Chilled wires.
Page 103: Fig. 58 - Leaving Chilled Liquid Temperature
-4.09 1.9158 14.76 -9.58 1.5835 19.81 -6.77 1.7512 24.73 -4.04 1.9189 14.85 -9.53 1.5865 19.90 -6.72 1.7542 24.82 -3.99 1.9219 19.99 -6.67 1.7573 14.95 -9.47 1.5896 24.91 -3.94 1.9250 15.04 -9.42 1.5926 20.08 -6.62 1.7603 24.99 -3.89 1.9280 YORK INTERNATIONAL...
Page 104 3.96 2.4189 29.57 1.35 2.0866 34.38 1.32 2.2543 39.22 4.01 2.4220 29.66 -1.30 2.0896 34.47 1.37 2.2573 39.30 4.06 2.4250 29.75 -1.25 2.0927 34.56 1.42 2.2604 39.39 4.11 2.4281 29.83 -1.21 2.0957 34.64 1.47 2.2634 39.48 4.16 2.4311 YORK INTERNATIONAL...
Page 105 9.45 2.7543 44.10 6.72 2.5897 54.27 12.37 2.9251 49.11 9.51 2.7574 44.19 6.77 2.5927 54.36 12.42 2.9281 49.20 9.56 2.7604 44.28 6.82 2.5958 54.46 12.48 2.9312 49.29 9.61 2.7635 54.55 12.53 2.9342 44.37 6.87 2.5988 49.38 9.66 2.7665 YORK INTERNATIONAL...
Page 106 21.81 3.4251 59.65 15.36 3.0928 65.32 18.51 3.2605 71.37 21.87 3.4282 59.75 15.42 3.0958 65.43 18.57 3.2635 71.49 21.94 3.4312 59.85 15.47 3.0989 65.53 18.63 3.2666 71.60 22.00 3.4343 59.95 15.53 3.1019 65.64 18.69 3.2696 71.72 22.07 3.4373 YORK INTERNATIONAL...
Page 107 24.90 3.5684 76.93 24.96 3.5715 77.05 25.03 3.5745 77.18 25.10 3.5776 77.30 25.17 3.5806 77.43 25.24 3.5837 77.55 25.31 3.5867 77.68 25.38 3.5898 77.80 25.45 3.5928 77.93 25.52 3.5959 78.05 25.59 3.5989 78.17 25.65 3.6020 78.30 25.72 3.6050 YORK INTERNATIONAL...
Page 108: Fig. 59 - Return Chilled Liquid Temperature
3.22 2.3730 22.45 -5.31 1.8408 30.22 -0.99 2.1094 37.94 3.30 2.3779 22.60 -5.22 1.8457 30.36 -0.91 2.1143 38.08 3.38 2.3828 22.74 -5.14 1.8506 30.50 -0.83 2.1191 38.22 3.46 2.3877 22.88 -5.07 1.8555 30.64 -0.76 2.1240 38.36 3.53 2.3926 YORK INTERNATIONAL...
Page 109 16.95 3.1787 45.79 7.66 2.6465 53.95 12.20 2.0150 62.67 17.04 3.1836 45.93 7.74 2.6514 54.11 12.28 2.9199 62.84 17.13 3.1885 46.08 7.82 2.6563 54.26 12.37 2.9248 63.01 17.23 3.1934 46.22 7.90 2.6611 54.41 12.45 2.9297 63.17 17.32 3.1882 YORK INTERNATIONAL...
Page 110 27.74 3.6914 71.36 21.87 3.4277 82.14 27.86 3.6963 71.54 21.97 3.4326 82.35 27.97 3.7012 71.72 22.07 3.4375 82.56 28.09 3.7061 71.91 22.17 3.4424 72.09 22.27 3.4473 72.28 22.38 3.4521 72.46 22.48 3.4570 72.64 22.58 3.4619 72.83 22.69 3.4668 YORK INTERNATIONAL...
Page 111: Fig. 60 - Return And Leaving Condensing Water
13.26 2.3535 47.79 8.77 2.0898 56.01 13.34 2.3584 64.36 17.98 2.6270 47.94 8.86 2.0947 64.52 18.07 2.6318 56.16 13.42 2.3633 48.09 8.94 2.0996 56.31 13.51 2.3682 64.52 18.07 2.6367 48.24 9.02 2.1045 64.83 18.24 2.6416 56.46 13.59 2.3730 YORK INTERNATIONAL...
Page 112 33.51 3.4277 82.33 27.96 3.1641 73.05 22.81 2.8955 92.52 33.62 3.4326 82.51 28.06 3.1689 73.22 22.90 2.9004 92.72 33.74 3.4375 82.69 28.16 3.1738 73.38 22.99 2.9053 92.91 33.84 3.4424 82.86 28.26 3.1787 73.54 23.08 2.9102 93.11 33.95 3.4473 YORK INTERNATIONAL...
Page 113 38.95 3.6572 102.33 39.08 3.6621 102.55 39.20 3.6670 102.78 39.33 3.6719 103.00 39.45 3.6768 103.22 39.57 3.6816 103.45 39.70 3.6865 103.67 39.82 3.6914 103.89 39.94 3.6963 104.12 40.07 3.7012 104.35 40.20 3.7061 104.58 40.33 3.7109 104.81 40.45 3.7158 YORK INTERNATIONAL...
Page 114: Fig. 61 - Oil And Discharge Temperature
23.50 0.7715 88.49 31.39 1.0400 58.06 14.48 0.5273 74.57 23.65 0.7764 88.72 31.51 1.0449 74.86 23.81 0.7813 88.96 31.65 1.0498 75.14 23.97 0.7861 89.20 31.78 1.0547 75.42 24.12 0.7910 89.43 31.91 1.0596 75.70 24.28 0.7959 89.67 32.04 1.0645 YORK INTERNATIONAL...
Page 115 50.16 1.8506 101.09 38.39 1.3184 112.09 44.50 1.5869 122.47 50.27 1.8555 112.28 44.60 1.5918 101.29 38.50 1.3232 122.65 50.37 1.8604 101.50 38.61 1.3281 112.48 44.71 1.5967 122.84 50.47 1.8652 101.71 38.73 1.3330 112.67 44.82 1.6016 123.02 50.57 1.8701 YORK INTERNATIONAL...
Page 116 67.03 2.6563 132.54 55.86 2.1240 142.59 61.44 2.3926 152.84 67.14 2.6611 132.73 55.97 2.1289 142.77 61.54 2.3975 153.03 67.24 2.6660 132.91 56.07 2.1338 142.95 61.64 2.4023 153.22 67.35 2.6709 133.09 56.17 2.1387 143.14 61.75 2.4072 153.41 67.46 2.6758 YORK INTERNATIONAL...
Page 117 86.38 3.4619 163.55 73.09 2.9297 175.04 79.47 3.1982 187.73 86.52 3.4668 163.75 73.20 2.9346 175.26 79.60 3.2031 187.97 86.66 3.4717 163.96 73.32 2.9395 175.48 79.72 3.2080 188.22 86.80 3.4766 164.16 73.43 2.9443 175.70 79.84 3.2129 188.46 86.93 3.4814 YORK INTERNATIONAL...
Page 118 103.51 3.9844 201.39 94.11 3.7207 218.65 103.70 3.9893 201.68 94.27 3.7256 219.00 103.90 3.9941 201.97 94.44 3.7305 219.35 104.09 3.9990 202.25 94.59 3.7354 219.70 104.29 4.0039 202.54 94.75 3.7402 220.06 104.49 4.0088 202.82 94.91 3.7451 203.11 95.07 3.7500 YORK INTERNATIONAL...
Page 119: Fig. 62 - Drop Leg Refrigerant Sensor
34.49 3.949 101.50 38.61 3.644 98.31 36.84 4.027 105.10 40.61 3.722 102.87 39.38 4.105 108.90 42.73 3.801 107.81 42.12 4.183 112.92 44.96 3.879 113.26 45.15 4.261 117.17 47.32 3.957 119.30 48.50 4.339 121.76 49.87 4.035 126.10 52.28 4.418 YORK INTERNATIONAL...
Page 120: Section 19 - Remote Setpoints
0-10VDC sig nal must be used for Re- The Microboard COM 4B RS-232 Serial Port (J2) mote Cur rent Lim it Reset. re ceives the Setpoints in serial data form from the MicroGateway located inside the OptiView Control YORK INTERNATIONAL...
Page 121 1 and 2. Calculate the setpoint for var i ous in puts as fol lows: For example, if the relay contacts close for 3 seconds, the setpoint would be set to 86% as follows: Setpoint (%) = 100 – (mA x 3.5) YORK INTERNATIONAL...
Page 122 • The appropriate Remote Mode must be selected: Offset (°F) = 5 x 10 AN A LOG Remote Mode must be selected when using a voltage or current signal input. DIGITAL = 50 Remote Mode must be selected when using a PWM input. = 5°F YORK INTERNATIONAL...
Page 123 REMOTE ANALOG IN PUT RANGE setpoint is set for “0-10VDC” and Microboard Pro gram = (4)(10) Jump er J24 has been placed on pins 1 and 2. Cal cu late the setpoint for var i ous inputs as follows: YORK INTERNATIONAL...
Page 124 Microboard COM 4B serial port (J2) in DIGITAL Remote mode. Calculate the setpoint for from the MicroGateway. various pulse widths as follows: Offset (°F) = (pulse width in seconds – 1)(Remote Re set Temp Range) YORK INTERNATIONAL...
Page 125: Section 20 - Hot Gas Bypass
PRES SOR Screen and “Warn ing – Vanes Uncalibrated” be closed at 10 minute intervals after the HOLD is displayed on the Sys tem Details line of the display PERIOD has elapsed. Refer to HOLD PERIOD until the calibration is per formed. above. YORK INTERNATIONAL...
Page 126 If the chiller is equipped with a Variable Speed Drive Load Over ride, Variable Speed Drive Override and (VSD), whenever the VSD is running at < full speed Au to mat ic con trol. (50/60 Hz), the Hot gas Bypass valve is driven to the YORK INTERNATIONAL...
Page 127 Hot Gas valve Ohms) is connected to P1, providing a 0 to 5VDC volt- actuator. age from a +12VDC source that represents PRV positon. Potentiometer rotation is limited to 37 degrees. PRV YORK INTERNATIONAL...
Page 128: Fig. 64 - Interface, Hot Gas Bypass
Hot Gas Bypass FORM 160.54-M1(503) YORK INTERNATIONAL...
Page 129: Section 21 - Smart Freeze Protection
Low Evap o ra tor Pressure Safety thresholds (R22 – 54.3 op er a tion, loading will be allowed when the pres sure PSIG, 29.6ºF) (R134a – 25.0 PSIG, 28.7ºF) are used. in creas es to 57.5 PSIG (R22) and 28.0 PSIG (R134a). YORK INTERNATIONAL...
Page 130 Cy cling shutdown threshold: 1 to 34.0ºF below the tem per a ture is 32.0ºF on Flash Mem o ry Card ver sion Leaving Chilled Liquid Tem per a ture Setpoint, as C.MLM.01.01 and ear li er. programmed, or a minimum of 36.0ºF. YORK INTERNATIONAL...
Page 131: Section 22 - Surge Protection
[(surge sen si - is equipped with Hot Gas Bypass and compressor mo- tiv i ty setpoint x 300) x 1.22] ÷ 1000 tor Variable Speed Drive, both conditions must be met be fore Extended Run is implemented. YORK INTERNATIONAL...
Page 132 10 minute period is initiated. Al- safety shutdown is performed and “Surge Pro tec tion ter nat ing with this message is “Warning – Excess – Excess Surge” is displayed. Surge Detected” that is displayed until manually YORK INTERNATIONAL...
Page 133: Section 23 - System Calibration
OptiView Control Cen ter Key pad operation required S1 and Potentiometer R16 have to be set appropriately in the pro ce dures be low are de tailed in YORK Operation on the CM-2 Module. If the CM-2 and/or RES are ﬁ eld Manual 160.54-O1.
Page 134: Solid State Starter Applications
The chiller could be equipped with either of two dif fer ent LED on the CM-2 Module should il lu mi nate. YORK Solid State Starters. Later production chill ers are equipped with the Mod “B” se ri al data in ter face Liquid...
Page 135: Mod "A" Multiplexed Data Interface Liquid Cooled Solid State Starter
Center. Operation of this board and overall starter op- Current Unbalance Check Enable/Disable: er a tion is contained in YORK Service Manual 160.46- While the chiller is running, if the compressor Motor OM3.1. The following procedures can be used to ver i fy current in phase A, B and C becomes un bal anced, a the cal i bra tion and perform the calibration if necessary.
Page 136: Compressor Motor Variable Speed Drive
Board. Op er a tion of this board and overall VSD op er a tion rent on the COMPRESSOR Screen. is de tailed in YORK Form 160.00-M1. There are two cal i - c. Manually operate the Pre-rotation Vanes by bra tions that have to be performed;...
Page 137: Pre-Rotation Vanes Position Potentiometer
Nev er change these val- Pre-rotation Vanes Position Potentiometer: ues unless advised by YORK Factory Ser vice. When initially installed, the Potentiometer should be a. Surge Margin – 0.0 to 25.0 Hz. (0.0) set so that the feedback voltage, as measured between b.
Page 138: Proximity Probe
IM POR TANT! - This should nev er by the programmed Amount (0.1 to 10.0 Hz) be per formed un less ad vised by YORK Fac to ry e. Lower – Places frequency Control in Man u al Ser vice.
Page 139: Safety Shutdown Reset/Inspection Procedure
Label adhered to the inside of the OptiView re set pro ce dure be low and re start chiller. Control Center door. This remains the Reference d. THRUST BEARING - OIL TEM PER A TURE Position until the Compressor is re built. YORK INTERNATIONAL...
Page 140: High Speed Thrust Bearing Limit Switch
5. Enter 1 3 9 7 and press the ENTER (✔) key. If the earlier (3.5 seconds); version C.MLM.01.07.xxx Limit Switch is closed, this clears the fault and al- and later (10.0 seconds “P” compressors; 3.5 sec- lows the chiller to be started. onds all other compressors) YORK INTERNATIONAL...
Page 141 (Re frig er ant Level Sen- ER ANT LEVEL CONTROL Screen and ob serve sor com plete ly cov ered). If the correct per cent age is not displayed for these levels, the Re frig er ant Level Sensor YORK INTERNATIONAL...
Page 142: Oil Pump Variable Speed Drive
Setpoint to be programmed. at at mo spher ic pressure, as they would be during main- 4. If the Dialog box begins with the word “Enter”, te nance. YORK INTERNATIONAL...
Page 143: High Condenser Pressure Warning Threshold
C.MLM.04.02.xxx). so lu tion determines this threshold. It is cal cu lat ed at the YORK Factory and programmed at the time of man u - Flash Memory Card version C.MLM.01.06.xxx and lat er fac ture. If the BRAM memory device on the Microboard or C.MLM.04.02.xxx have special vari able speed low...
Page 144: Drop Leg Refrigerant Temperature
4. Press SMART FREEZE key. 4. Use ◄ and ► keys to select Enable or Dis able. 5. Use ◄ and ► keys to select ON or OFF. 5. Press ENTER (✔) key. 6. Press ENTER (✔) key. YORK INTERNATIONAL...
Page 145: Chiller Starts And Operating Hours Reset
5%. Press ing the AUTO key in vokes 1. At the keypad, login at ADMIN access level. This au to mat ic op er a tion. password changes daily. Contact your local YORK Service Ofﬁ ce. Pre-rotation Vanes Position Potentiometer 2.
Page 146: Service Phone Numbers
All of the Sales Order Data, except the “Chill er Com mis - bers, al pha bet char ac ters and punc tu a tion marks to sion ing Date” is entered at the YORK Fac to ry at the time se lect the desired value. When the de sired value of chill er man u fac ture.
Page 147: Custon User Id And Passwords
ADMIN pass word. This pass word up and down through the al pha bet to en ter let ters or chang es dai ly. Contact your lo cal YORK Ser vice a comma (,), slash (/) or mi nus sign (-). Each time Of ﬁ...
Page 148: Record Setpoint Changes
A PRINT key allows printing this entire list. Since 15 chang es can be displayed at one time, multiple pages could be necessary to display all the chang es. PAGE-UP and PAGE-DOWN keys are provided to view the entire YORK INTERNATIONAL...
Page 149: Chiller Style/Compressor
• Oil Heater Outputs – Either TB1-34 or TB1-64 on I/O Board • Refrigerant Level Control Default Period – Either 3.5 seconds or 10.0 seconds • “Oil – Variable Speed Pump-Pressure Setpoint Not Achieved” safety shutdown threshold – Either 25 PSID or 35 PSID YORK INTERNATIONAL...
Page 150 (Analog or Digital) Switch Programmable “Style F/J Compr” Probe TB1-64 3.5 sec 35 PSID (Analog or Digital) Limit Programmable “Style F/P Compr” TB1-64 10.0 sec 25 PSID (Analog or Digital) Switch * Not applicable to Style C and earlier chillers YORK INTERNATIONAL...
Page 151: Flow Switch
(evaporator) and TB4-11 (condenser). In order for the program to read the appropriate inputs for the ﬂ ow sen- sor status, the actual sensor type used must be entered at the keypad OPERATIONS Screen using Service Access Level. YORK INTERNATIONAL...
Page 152: Section 24 - Diagnostics & Troubleshooting
GUI - Soft ware that is part of FLASH Memory Card SIO - Software that is part of FLASH Memory Card Style “F” chillers (all compressors): GPIC - Eprom in MicroGateway • 160.73-PW1 (Electro-mechanical Starter) • 160.73-PW2 (Mod “B” Solid State Starter) • 160.73-PW3 (Variable speed Drive) YORK INTERNATIONAL...
Page 153: Main Diagnostics Screen
- All blue - All white - All black - Serial 1/0 test - Digital 1/0 test - Analog Inputs The ADVANCED SECURITY key is used during the manufacturing pro cess and has no ﬁ eld service use. YORK INTERNATIONAL...
Page 154: Keypad Test
Microboard. If the Keypad and Ribbon Ca ble 1. Keypad check OK per the above pro ce dures, the Microboard a. Disconnect the ribbon cable from the Key pad. is most likely the cause of the prob lem. YORK INTERNATIONAL...
Page 155: Display Test
• All Red - This test veriﬁ es the operation of all of “All Red” test above. the red pixels. All of the red pixels are turned on to cre ate a completely red screen. Any red pixels YORK INTERNATIONAL...
Page 156: Fig. 68 - Bit Patterns Test Screen
Using an Ohmmeter, perform a continuity test on all procedures, the Display is most likely the cause of conductors of the Interface Board. An open cir cuit the problem. would indicate the Interface Board is de fec tive. YORK INTERNATIONAL...
Page 157: Serial Inputs / Outputs Test
Make individual wire connections or use YORK loop- noted will result in a FAIL outcome for the test. around diagnostic connector 025-33778-000 as de pict ed in Figure 68 This connector is available from the YORK Parts Distribution Center. From...
Page 158: Fig. 70 - Microboard - Com 5 Serial Data Port
TX (J13-5) to RX (J13-3) at 19200 Baud. TRANSMIT COMMON RECEIVE +5VDC LOOP-AROUND DIAGNOSTIC CONNECTOR YORK PIN 025-33778-000 INSTALL TO PERFORM DIAGNOSTIC +5VDC LOOP-AROUND TEST LD04250 FIG. 70 – MICROBOARD - COM 5 SERIAL DATA PORT YORK INTERNATIONAL...
Page 159: Digital Iinputs / Outputs Test
DIAGNOSTICS key to return to MAIN DI AG - cord ing to a.) Terminal number on the I/O Board NOS TICS Screen. and b.) Microboard Program Jumpers and Pro gram DIP Switch es. Figure 14 shows the de vic es con- YORK INTERNATIONAL...
Page 160 Refer to Figure 14 and applicable wiring di a gram ref- Board on I/O Board between J1-26 (+12VDC) and er enced at the beginning of Section 23. If a defective J1-25 (Gnd). If >11.0VDC, proceed to next step. If YORK INTERNATIONAL...
Page 161 >100VAC (Slide Valve ac tu a tor) should be at a Logic High (>10.0VDC) lev el. With or >20VAC (PRV, Hot Gas or Re frig er ant Level the output at a Logic High level, the relay contacts Control ac tu a tor). YORK INTERNATIONAL...
Page 162: Anallog Inputs Test
0 - +2.5VDC Analog sup ply volt age reference. 19 - Solid State Starter/CM-2 MUX output Channel 4 Microboard TP6. 20 - Solid State Starter/CM-2 MUX output Channel 5 1 - Not Used 21 - Solid State Starter/CM-2 MUX output Channel 6 YORK INTERNATIONAL...
Page 163 Transducer at Microboard J8-18 (sig nal) to J8-9 is still not with in 10% of the speciﬁ ed value, the (Gnd). voltage supply source (Microboard or Power Sup- • Channels 15-22: ply) is most like ly de fec tive. YORK INTERNATIONAL...
Page 164 Sol id State Starter Logic Board or CM-2 Board or input devices to these boards is most likely the cause of the problem. If address is not correct, the Microboard is most likely the cause of the prob- lem. YORK INTERNATIONAL...
Page 165: Section 25 - System Commissioning Checklist
PROXIMITY PROBE CALIBRATION Screen an asterisk “*” have been determined and entered/set at (except “P” Compressors): the YORK Factory at the time of man u fac ture. ____ Verify that a Proximity Probe Reference Position* had been entered. 1. PROGRAM JUMPERS/SWITCHES: PRE-ROTATION VANES CALIBRATE (160.54-M1)
Page 166 ____ Surge Map Auto Print Enable/Disable (160.54-O1) The following Setpoints should not be changed ____ Enter the desired Pulldown Demand Limit un less instructed by YORK Factory. and Time Setpoint (160.54-O1) ____ Surge Margin adjust* Solid State Starter Applications: (160.54-M1) ____ Stability Limit* Mod “B”...
Page 167 If Printer is connected to Microboard serial ports, en ter Card ver sion C.MLM.01.05.xxx and later) the following: ____ Enter Chiller Style/Compressor (Flash Mem- ory Card version C.MLM.01.07.xxx and later) ____ Enter Flow Sensor type (Flash Memory Card version C.MLM.01.08.xxx and later). YORK INTERNATIONAL...
Page 168: Section 26 - Service Information Letters / Bulletins
General Beginning May 2001, an enhanced Flash Memory Card will be supplied with new production Nema 1-4 and CE chillers. New features are outlined below and are also included in YORK Operation Manual 160.54-O1 and Ser- vice Manual 160.54-M1. Flash Mem o ry Card versions and part numbers are applied as follows: •...
Page 169 In previous Flash Memory Card versions, the oil pump VSD starts at 25Hz when turned on during “System Prelube”. In this version, it starts at 45Hz. This provides greater reliability in achieving the required 45 PSID Target Oil Pres sure at chiller start. YORK INTERNATIONAL...
Page 170: Si0019 - Software Enhancements Effective March 2002
If it is desired to view the details of a particular Setpoint change, select the Setpoint change number with the LOG ENTRY key and then press the VIEW DETAILS key. This moves to the SECURITY LOG DETAILS Screen. YORK INTERNATIONAL...
Page 171 The Ramp-up feature is now only executed immediately after chiller start. Subsequent Ramp func tions during chiller run have been eliminated. • Rate Limit Open Setpoint – Now programmable over the range of 5% to 50%. Previously, it was 10% to 50%. YORK INTERNATIONAL...
Page 172 Harmonic Filter Currents are now correctly displayed at maximum values. History Chiller Run Time is now included on History Details display and print. Hot Gas Bypass The Hot Gas Valve position is now animated on the HOT GAS BYPASS Screen. YORK INTERNATIONAL...
Page 173 FORM 160.54-M1(503) This page intentionally left blank YORK INTERNATIONAL...
Page 174: Si0034 (203) - Software Enhancements Effective August 2002
“Mod F – J Compr” c. “Mod F – P Compr” d. “Mod CDE – GHJ Compr” e. “Mod E – P Compr” Once the appropriate chiller/compressor combination is entered, the program automatically bundles the functionality and control per the following table: YORK INTERNATIONAL...
Page 175 Microboard J7-1 (+5Vdc) pin 4 J7-14 (input to Microboard ) Condenser: Sensor pin 2 Microboard J7-15 (+5Vdc) pin 4 J7-16 (input to Microboard) Microboard Program Jumpers JP21 and JP22 must be placed in the positions 2 & 3. YORK INTERNATIONAL...
Page 176 Since the new version Flash Memory Card (as described above) is applicable to all YK chillers with any compres- sor, the Microboard replacement kit 331-01730-604 previously supplied for YK chillers equipped with “P” com- pressors is no longer required. The standard 331-01730-601 Microboard replacement kit will be supplied when the 331-01730-604 is ordered. YORK INTERNATIONAL...
Page 177 FORM 160.54-M1(503) This page intentionally left blank YORK INTERNATIONAL...
Page 178: Si0058 - Software Enhancements Effective February 2003
Phase A, B and C Base- plate Temperatures are displayed on the VSD DETAILS Screen and Filter Baseplate Temperature is displayed on the FILTER DETAILS Screen. YORK INTERNATIONAL...
Page 179 This was incorrect operation. In this version, the codes are transmitted into the proper slots in the Micro- gateway. Security Log Screen In previous Flash Card versions, some setpoint changes were not logged in metric mode. All setpoint changes are now logged. YORK INTERNATIONAL...
Page 180: Si0062 - Software Enhancements Effective March 2003
25 PSID P Compr” (Analog or Digital) * Not applicable to Style C and earlier chillers P.O. Box 1592, York, Pennsylvania USA 17405-1592 Tele. 800-861-1001 Subject to change without notice. Printed in USA www.york.com Copyright © by York International Corporation 2002 ALL RIGHTS RESERVED Form 160.54-M1 (503)

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York MAXE OPTIVIEW YK Service Instructions Manual

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