CSZ MicroClimate Series Installation, Operation & Maintenance Manual

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Installation

Operation

Maintenance

Manual

MicroClimate

Series

MCB 1 2

MCB-1.2

MC 3

MC-3

56291 REV AE

4/2020

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Summary of Contents for CSZ MicroClimate Series

Page 1 Installation Operation Maintenance Manual ® MicroClimate Series MCB-1.2 MCB 1 2 MC-3 MC 3 56291 REV AE 4/2020...
Page 2 Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. INTRODUCTION...
Page 3 This area was developed in an attempt to better deﬁ ne items on CSZ chambers that are “SPECIFIC” to a customer. Please refer to this section for warranty, controller PID parameters, and calibration/veriﬁ cation test data sheets.
Page 4 THIS PAGE INTENTIONALLY LEFT BLANK INTRODUCTION...
Page 5 CHAMBER LABELS GENERAL DANGER, CONSULT MANUAL AND MEANINGS Some graphical safety labels may be replaced with textual based ELECTRICAL SHOCK safety labels. Read the entire manual for other safety information that is applicable to our chamber. EXPLOSION, ARC FLASH HAZARD LOW TEMPERATURE HOT SURFACE KEEP HANDS CLEAR;...
Page 6 THIS PAGE INTENTIONALLY LEFT BLANK CHAMBER LABELS & MEANINGS...
Page 7: Table Of Contents
SECTION 1 USER MANUAL CHAPTER 1 SAFETY PRECAUTIONS/FEATURES INTRODUCTION ..........................1-1 GENERAL SAFETY PRECAUTIONS ...................1-1 HANDLING ELECTROSTATIC DISCHARGE SENSITIVE DEVICES ...........1-4 SAFETY FEATURES ........................1-5 ELECTRICAL CIRCUIT PROTECTION ..................1-5 REFRIGERATION SYSTEM PROTECTION ..................1-5 OVERTEMPERATURE PROTECTION ..................1-5 CHAPTER 2 GENERAL DESCRIPTION SYSTEM DESCRIPTION ......................2-1 CONTROLLER ..........................2-1 CHAMBER .............................2-1 CHAMBER INTERIOR ........................2-1...
Page 8 CHAPTER 3 OPERATING INSTRUCTIONS START-UP INSTRUCTION SUMMARY ..................3-1 SUMMARY FOR STEP-BY-STEP SETPOINT OPERATION - EZT-430S ........3-1 CHAMBER PERFORMANCE (EZT-430S) ..................3-6 HIGH/ LOW LIMIT CONTROL ......................3-6 START-UP INSTRUCTION SUMMARY - F4 (OPTIONAL) ............3-7 SINGLE SET-POINT OPERATION - HUMIDITY ................3-9 CHAMBER PERFORMANCE (WATLOW F4) ................3-9 START-UP INSTRUCTION SUMMARY - EZT-570S (OPTIONAL) ..........3-10 PUMPDOWN ..........................
Page 9 Table 1. Required Test Equipment ......................5-3 Table 2. General Troubleshooting Procedures ..................5-4 Table 3. Humidity Troubleshooting Procedures ..................5-6 CHAPTER 6 WARRANTY AND SHIPPING INFORMATION HOW TO CONTACT CSZ ......................6-1 HOW TO OBTAIN REPLACEMENT PARTS/PARTS ORDERING PROCEDURE ......6-1 STANDARD LIMITED EQUIPMENT WARRANTY TABLE OF CONTENTS...
Page 10 SECTION 3 CHAMBER SPECIFIC DOCUMENTATION CHAPTER 7 SPECIFIC INFORMATION CALIBRATION CERTIFICATES ADDITIONAL UNIT SPECIFIC DOCUMENTATION AS REQUIRED CHAPTER 8 PARTS LISTS ELECTRICAL BILL OF MATERIALS REFRIGERATION BILL OF MATERIALS OPTIONS BILLS OF MATERIALS AS REQUIRED CHAPTER 9 SYSTEMS DIAGRAMS ELECTRICAL SCHEMATIC SYMBOLS REFRIGERATION SCHEMATIC SYMBOLS LAYOUT DRAWING (IF REQUIRED) ELECTRICAL SCHEMATIC...
Page 11: Safety Precautions/Features
INTRODUCTION Warnings contained in this manual are identiﬁ ed by this symbol. Warnings identify any WARNING conditions or practices that, if not strictly observed, could result in personal injury or possible loss of life. Cautions in this manual are identiﬁ ed by this symbol. Cautions identify any condition CAUTION or practice that, if not strictly observed, could result in damage to, or destruction of, the system equipment.
Page 12 GENERAL SAFETY PRECAUTIONS DO NOT replace components or make adjustments inside the equipment with the main WARNING power supply turned on. Under certain conditions, dangerous potentials may still exist when the power switch is in the off position due to charges retained by capacitors. To avoid injury, always remove power and ground a circuit before touching it.
Page 13 GENERAL SAFETY PRECAUTIONS Window frame may become hot during operation. WARNING DO NOT put corrosive substances into the chamber examples of corrosive substances CAUTION include, but are not limited to, Chlorine, Chlorides and Acids. WARNING DO NOT place items in the chamber which can emit corrosive vapors or substances. There are NO provisions for venting fumes.
Page 14 ELECTROSTATIC DISCHARGE SENSITIVE DEVICES This manual contains maintenance procedures for parts and assemblies sensitive to damage by electrostatic discharge (ESD). Parts or assemblies are identiﬁ ed as ESD sensitive by the symbol to the left. The following are general precautions that should be observed when handling ESD sensitive devices or assemblies: 1.
Page 15: Safety Features
SAFETY FEATURES Cincinnati Sub-Zero incorporates many safety features in the design of its WARNING equipment. These safety features provide protection for the equipment, as well as for operating and maintenance personnel. DO NOT CONNECT THIS UNIT TO A GFI CIRCUIT BREAKER. ELECTRICAL CIRCUIT PROTECTION The MCB-1.2 model (115VAC,60 Hz) requires a dedicated 20 amps circuit.
Page 16 THIS PAGE INTENTIONALLY LEFT BLANK SAFETY - PRECAUTIONS AND FEATURES Page 1-6...
Page 17: System Description
SYSTEM DESCRIPTION MC-Series Temperature chambers are pre-engineered chambers designed to provide an NOTE environment with speciﬁ c temperature (humidity) conditions. The standard MC-model is composed of three basic sections: 1. Control section, 2. Chamber section, 3. Refrigeration/ Condensation on exterior Heating section.
Page 18: Refrigeration/Heating
80ºF (26.7ºC) for proper operation. Ultimate low temperatures will vary with ambient conditions. All refrigeration components are selected to ensure safe, reliable, and balanced operation. The components may be purchased from the CSZ Service Department or a local refrigeration wholesaler. B. Heater Open-coil nichrome heating elements are standard on all systems.
Page 19 GENERAL DESCRIPTION Page 2-3...
Page 20 Figure 2. MCB-1.2 Plenum Area Air Temperature Sensor Figure 3. MCB-1.2 Air Temperature Sensor Location Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. GENERAL DESCRIPTION...
Page 21 Air Temperature Sensor (Inside panel is different in MCB units) Figure 4. MCBH-1.2 Air Temperature Sensor Location Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. GENERAL DESCRIPTION...
Page 22: Figure 5. Plenum Area
Coil Figure 5. Plenum Area Air Temperature Sensor Figure 6. Air Temperature Sensor Location Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. GENERAL DESCRIPTION Page 2-6...
Page 23: Pen Recorders (Optional)
Limit Control will shut down the chamber operation and product operation if the safe operating temperature limit of the product, either hot or cold, has been exceeded. Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown.
Page 24: Ieee-488 System (Optional)
IEEE-488 SYSTEM (OPTIONAL) The IEEE-488 bus is also known as the “General Purpose Interface Bus” (or GPIB). The purpose of the IEEE-488 bus is to transfer information between two or more devices. A device may either be an instrument or a computer. Devices may ‘Talk’...
Page 25: Humidity Panel/Chamber Components (Optional)
The cartridge should be changed before it completely changes color. A reference mark is provided on the ﬁ lter to indicate when it should be changed. Spare cartridges are available through the CSZ Service Department. Refer to the Humidity Maintenance Section for instructions on how to change the ﬁ...
Page 26 HUMIDITY CHAMBER COMPONENTS (OPTIONAL) The chamber area contains the remaining components necessary to generate and maintain humidity levels within the work space. The following is a description of these components (see Figures 4 and 5). A. Solid State Humidity Sensor DO NOT RELOCATE.
Page 27: Figure 8. Mcb 1.2 Recirculating Water
230VAC, 50Hz, 16A outlet that Pump Drain Valve is separate Figure 9. MC3 Recirculating Water Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. GENERAL DESCRIPTION Page 2-11...
Page 28: Figure 10. Steam Generator System
Safety Thermostat Heater Valve & Rack Assembly Water Drain Figure 10. Steam Generator System Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. GENERAL DESCRIPTION Page 2-12...
Page 29: Microclimate Specifications
MICROCLIMATE SPECIFICATIONS Model MCB-1.2-.33-.33-H/AC MicroClimate Benchtop 1.2 cubic feet of work space (excluding sensors) .33-.33 .33 HP HFC-404A, .33 HP R-508B Cascade Refrigeration System H/AC Hermetic Compressors, Air Cooled Condenser Temperature Range: -70°C (-94°F) to +190°C (+375°F) Control Stability: ±0.5°C from -50°C to +190°C, ±1°C below -50°C, at steady state conditions after stabilization.
Page 30 Model MCBH-1.2-.33-.33-H/AC MCBH MicroClimate Benchtop Humidity 1.2 cubic feet of work space (excluding sensors) .33-.33 .33 HP HFC-404A, .33 HP R-508B Cascade Refrigeration System H/AC Hermetic Compressors, Air Cooled Condenser Temperature Range: -70°C (-94°F) to +190°C (+375°F) Humidity Range: 10% to 98% RH Control Stability: ±0.5°C from -50°C to +190°C, ±1°C below -50°C, at steady state conditions after stabilization.
Page 31 Model MCB-1.2-.33-H/AC MicroClimate Benchtop 1.2 cubic feet of work space (excluding sensors) .33 HP HFC-404A Single Stage Refrigeration System H/AC Hermetic Compressors, Air Cooled Condenser Temperature Range: -30°C (-22°F) to +190°C (+375°F) Control Stability: ±0.5°C from -50°C to +190°C, ±1°C below -50°C, at steady state conditions after stabilization.
Page 32 Model MCBH-1.2-.33-H/AC MicroClimate Benchtop with humidity 1.2 cubic feet of work space (excluding sensors) .33 HP HFC-404A Single Stage Refrigeration System H/AC Hermetic Compressors, Air Cooled Condenser Temperature Range: -30°C (-22°F) to +190°C (+375°F) Humidity Range: 10% to 95% RH Control Stability: ±0.5°C from -50°C to +190°C, ±1°C below -50°C, at steady state conditions after stabilization.
Page 33 Model MC-3-.33-.33-H/AC MicroClimate 3 cubic feet of work space (excluding sensors) .33-.33 .33 HP HFC-404A, .33 HP R-508B Cascade Refrigeration System H/AC Hermetic Compressors, Air Cooled Condenser Temperature Range: -65°C (-85°F) to +190°C (+375°F) Control Stability: ±0.5°C from -50°C to +190°C, ±1°C below -50°C, at steady state conditions after stabilization.
Page 34 Model MCH-3-.33-.33-H/AC MicroClimate Humidity 3 cubic feet of work space (excluding sensors) .33-.33 .33 HP HFC-404A, .33 HP R-508B Cascade Refrigeration System H/AC Hermetic Compressors, Air Cooled Condenser Temperature Range: -65°C (-85°F) to +190°C (+375°F) Humidity Range: 10% to 95% RH Control Stability: ±0.5°C from -50°C to +190°C, ±1°C below -50°C, at steady state conditions after stabilization.
Page 35 Model MC-3-.50-.50-H/AC (230V) MicroClimate 3 cubic feet of work space (excluding sensors) .50-.50 .50 HP HFC-404A, .50 HP R-508B Cascade Refrigeration System H/AC Hermetic Compressors, Air Cooled Condenser Temperature Range: -70°C (-94°F) to +190°C (+375°F) Control Stability: ±0.5°C from -50°C to +190°C, ±1°C below -50°C, at steady state conditions after stabilization.
Page 36 Model MCH-3-.50-.50-H/AC MicroClimate Humidity 3 cubic feet of work space (excluding sensors) .50-.50 .50 HP HFC-404A, .50 HP R-508B Cascade Refrigeration System H/AC Hermetic Compressors, Air Cooled Condenser Temperature Range: -70°C (-94°F) to +190°C (+375°F) Humidity Range: 10% to 95% RH Control Stability: ±0.5°C from -50°C to +190°C, ±1°C below -50°C, at steady state conditions after stabilization.
Page 37 Model MC-3-1-1-H/AC MicroClimate Upright Temperature 3 Cubic Ft. (85 L) 1HP HFC-404A, 1HP R-508B Cascade Refrigeration System H/AC Hermetic Compressor, Integral Air Cooled Condenser Temperature Range: -70°C to +190°C (-94°F to +375°F) Control: ±0.5°C (±1°F) at steady state condition after stabilization Temperature Performance: Temperature pull-down from: +24°C (+75°F) to -40°C (-40°F) in 12 minutes...
Page 38 Model MCH-3-1-1-H/AC MicroClimate with Humidity 3 Cubic Ft. (85 L) 1HP HFC-404A, 1HP R-508B Cascade Refrigeration System H/AC Hermetic Compressor, Integral Air Cooled Condenser Temperature Range: -70°C to +190°C (-94°F to +375°F) Humidity Range: 10% to 95% RH Control: ±0.5°C, ±4% RH at steady state conditions after stabilization Temperature Performance: Temperature pull-down from: +24°C (+75°F) to -40°C (-40°F) in 12 minutes...
Page 39 Model MCH-3-1.5-1.5-H/AC MicroClimate with Humidity 3 Cubic Ft. (85 L) 1HP HFC-404A, 1HP R-508B Cascade Refrigeration System H/AC Hermetic Compressor, Integral Air Cooled Condenser Temperature Range: -70°C to +190°C (-94°F to +375°F) Humidity Range: 10% to 95% RH Control: ±0.5°C, ±4% RH at steady state conditions after stabilization Temperature Performance: Temperature pull-down from: +24°C (+75°F) to -40°C (-40°F) in 10 minutes...
Page 40: Sequence Of Operations
SEQUENCE OF OPERATIONS REFRIGERATION SYSTEM Model #: MCB(H)-1.2-.33-.33-H/AC and MCB(H)-3-.33-.33-H/AC System 1 Description (Refrigerant R-404A) - Refer to drawing: MCB-RF00 and MC3(H)-RF00 The compressor (item 1) will pump compressed R-404A vapor through the discharge line. The discharge refrigerant vapor enters the air-cooled condenser. The air-cooled condenser (item 5) cools the high pressure R-404A vapor and condenses it into a high- pressure liquid.
Page 41 Control System REFRIGERATION (Refer to drawing: MCB-RF00 or MC3(H)-RF00 & MC3-EW00) Mode: Normal cooling (Below 17°C) When there is call for cooling the R-404A compressor turns on, 1-SOL is energized. After the stagger start timer expires, approximately 1 minute, the R-508B compressor turns on. When there is a call for cooling refrigerant (R-508B) ﬂ...
Page 42 REFRIGERATION SYSTEM Model #: MCB(H)-1.2-.33-H/AC (115V and 230V) Single Stage System (Refrigerant R-404A) - Refer to drawing: MCB-RF03 The compressor (item 1) will pump compressed R-404A vapor through the discharge line. The discharge refrigerant vapor enters the air-cooled condenser. The air-cooled condenser (item 5) cools the high pressure R-404A vapor and condenses it into a high- pressure liquid.
Page 43 CASCADE UNIT - SYSTEM 1 (R-404A) DESCRIPTION Refer to Refrigeration Diagram in Drawing Section NOTE: Pressure settings are approximate. The compressor (item 1) will pump compressed R-404A vapor through the discharge line where the high pressure gauge displays the pressure of the refrigerant. The high pressure switch (item 95 or item 100) senses the discharge refrigerant pressure and will open a contact in the event that discharge pressure exceeds 350 psig.
Page 44 CASCADE UNIT - SYSTEM 2 (R-508B) DESCRIPTION The compressor (item 41) will pump compressed R-508B vapor through the discharge line where the high pressure gauge senses the pressure of the refrigerant. The high pressure switch (item 95) senses the discharge refrigerant pressure and will open a contact in the event that discharge pressure exceeds 350 psig This contact opening will serve to shut down the unit and will automatically reset when the pressure drops to 250 psig (17.2 barG).
Page 45 CASCADE CONTROL SYSTEM Refer to Refrigeration Diagram in Drawing Section Mode: Normal cooling/heating When there is call for cooling the R-508B liquid line solenoid (2-SOL) energizes, and the R-404A compressor turns on. Thirty seconds later the R-508B compressor turns on. High pressure switches (1 & 4 PS) will turn off the compressors if a high discharge pressure is reached on either system.
Page 46 THIS PAGE INTENTIONALLY LEFT BLANK GENERAL DESCRIPTION Page 2-30...
Page 47: Start-Up Instruction Summary
START-UP INSTRUCTION SUMMARY The standard controller installed on MC-Series units is the CSZ EZT-430S. Optional controllers, including the Watlow F-4 and the CSZ EZT-570S are also available. Speciﬁ cations for the controller may be found in the individual controller's manuals, located on the digital media included in this binder.
Page 48 SINGLE SETPOINT OPERATION - TEMPERATURE/HUMIDITY Press the numeric setpoint for temperature or humidity, the setpoint adjust key pad will be shown on the screen. Enter the desired setpoint. Turn on the conditioning/humidity system by pressing the Manual Operation button then, turning ON/ OFF the corresponding “event”...
Page 49 Automatic Ramp/Soak Program Operation section in the provided EZT- 430S User Manual. Sample proﬁ les have been provided from CSZ preloaded on the EZT-430S controller in order to provide an example of a completed proﬁ le.
Page 50 When the program has been completed, the program must be saved prior to being run on the controller. To save the newly created program, select the File icon, and select Save As. Select the ﬁ eld next to File Name and enter the name for the program by using the keyboard that is displayed.
Page 51 Hold/Resume Ramp/Soak Program Operation (Icon Based Navigation) At any time during the operation of a program, it can be manually placed into hold. This stops the program timer; however, the EZT-430S continues operation under the current step settings at the time the program was put into hold.
Page 52: Chamber Performance (Ezt-430S)
CHAMBER PERFORMANCE The performance of your chamber is signiﬁ cantly effected by the characteristics of your test sample. Factors include size, material, shape, NOTE weight and power dissipation if energized. The test sample should be placed in the chamber in a manner that allows proper ventilation. Air ﬂ ow If other devices are used to enters in the top left of the plenum and exits the top right.
Page 53 SUMMARY FOR STEP-BY-STEP SET-POINT OPERATION - F4 CONTROLLER (Optional) NOTE These instructions will enable the operator to use the Watlow F4 Programmer/ The following start-up Controller in a single set-point operation. The User's Manual for the Watlow instructions are written for F4 Programmer/Controller (found on the digital media that accompanied your the Watlow F4 Controller.
Page 54: Figure 2. Watlow F4 Controller
. Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown.
Page 55: Single Set-Point Operation - Humidity
SINGLE SET-POINT OPERATION - HUMIDITY 1. The Humidity system is turned ON/OFF through digital output #2. To NOTE turn ON/OFF the humidity system: Humidity performance will be Use the ▲ ▼ up and down arrow keys to navigate through the lower affected if live loads are placed display and place the arrow cursor on the digital out ﬁ...
Page 56 START-UP INSTRUCTION SUMMARY (EZT-570S CONTROLLER) The control section, illustrated in Figure 1, is composed of a CSZ EZT-570S Controller. Speciﬁ cations for the Controller are in the EZT-570S User's manuals found on the digital media that accompanied your unit. EZT-570S Controller...
Page 57: Pumpdown
PUMPDOWN Chambers with large horsepower refrigeration systems have an automatic mode of operation called “pumpdown”. The refrigeration system is in this mode whenever it is not running to cool or dehumidify the chamber. In pumpdown mode, the system 1 compressor will automatically turn on and off at preset pressures in order to force refrigerant into the high side of the system.
Page 58: Single Setpoint Operation
SINGLE SET POINT OPERATION To adjust the setpoint: Select one of the loop views from the main View menu. Input the setpoint temperature. Press the numeric display for the setpoint (SP) for temperature. The setpoint adjust keypad will be shown on the screen. Enter the desired setpoint value and press the “Enter” button. Turn the Chamber event on to start the chamber, see manual event control.
Page 59: Manual Event Control
To create and run programs on the EZT-570S, see Chapter 4 of the EZT-570S User Manual Sample proﬁ les have been provided by CSZ preloaded on the EZT-570S controller in order to provide an example of a completed proﬁ le.
Page 60 THIS PAGE INTENTIONALLY LEFT BLANK OPERATION Page 3-14...
Page 61: Installation
PREPARATION FOR USE 1. Inspect all equipment for damage that may have occurred during shipment. Contact Cincinnati Sub-Zero immediately if any shipping damage is noticed. WARNING 2. Ensure that all packing materials have been removed from all parts. 3. Read this manual in its entirety. Only qualified maintenance personnel should be permitted 4.
Page 62: Single Phase Cord Connected Equipment
(See your unit for actual labels) Protective Conductor Terminal (For equipment grounding conductor) Figure 1. Power Distribution Block Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. INSTALLATION Page 4-2...
Page 63: Removing Top Cover Of Chamber
Exceeding this pressure may cause catastrophic failure of the Note: CSZ is continuously upgrading the components used ﬁ lter housing. in its equipment. Consequently, the physical appearance of certain components may vary from that shown. INSTALLATION...
Page 64: Figure 3. Refrigeration Power Pack (Mcb 1.2 Cascade)
(System #2) Air Circulator Motor R-404A Compressor (System #1) Figure 3. Refrigeration Power Pack MCB 1.2 (Cascade) Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. INSTALLATION...
Page 65: Figure 4. Main Power Wiring, Mcb
Compressor Contactor R-508B Compressor Heater Solid State Relay Figure 4. Main Power Wiring, MCB Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. INSTALLATION Page 4-5...
Page 66: Figure 5. Main Power Wiring, Mcbh
Compressor Contactor R-508B Compressor Humidity Solid State Relay Figure 5. Main Power Wiring, MCBH Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. INSTALLATION Page 4-6...
Page 67 Chamber Limit Controller Contactor R-508B Compressor Humidity Solid State Relay Figure 6. EZT 430S Main Power Wiring, MC-3 Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. INSTALLATION...
Page 68: Figure 7. Main Power Wiring (Mc-3 With Ezt-570S Controller)
EZT-570S Control Module Air Temperature Controller EZT-570S Touchscreen Unit Air Circulation Motor RS-232 Isolator Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. INSTALLATION Page 4-8...
Page 69: Figure 8. Refrigeration Power Pack (Mc-3)
MC-3 R-508B Compressor (System #2) Figure 8. Refrigeration Power Pack MC-3 R-404A Compressor (System #1) Note: CSZ is continuously upgrading the components used in its equipment. Consequently, the physical appearance of certain components may vary from that shown. INSTALLATION Page 4-9...
Page 70 THIS PAGE INTENTIONALLY LEFT BLANK INSTALLATION Page 4-10...
Page 71: Inspection Schedule
INSPECTION SCHEDULE In the day-to-day operation of this equipment, you will become aware of certain WARNING levels of noise, vibration, temperature, and pressure. If you encounter any signiﬁ cant changes in these levels, investigate them immediately. Only qualified maintenance personnel should be permitted A inspection program should be developed for this equipment.
Page 72: Yearly
3. System 2 (R-508B) Stand-By Pressure (If Applicable) Check the pressure in the controller prior to starting the conditioning system. A discharge pressure reading lower than the standby pressure on the data plate could indicate a leak in the system. DO NOT START. To check the stand-by pressure, power off the unit.
Page 73: General Visual Inspection
GENERAL VISUAL INSPECTION Chassis Deformation, dents, punctures, badly worn surfaces, damaged connectors, damaged fastener devices, or damaged handles. Inspect for corrosion and damage to ﬁ nish. Connectors Broken or deformed shells or clamps, and other irregularities. Inspect for cracked or broken insulation and for contacts that are broken, deformed, or out of alignment.
Page 74 GENERAL TROUBLESHOOTING PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Compressor will Conditioning system OFF Turn ON conditioning system not run No electrical power Check facility circuit breaker Wrong voltage applied to unit Check voltage and correct Compressor internal overload tripped Will automatically reset when cooled High/Low Limit tripped Correct cause of limit condition, repair and reset Control alarm energized...
Page 75 GENERAL TROUBLESHOOTING PROBLEM PROBABLE CAUSE CORRECTIVE ACTION R-508B Head Refrigerant shortage Repair leak and recharge Pressure too R-404A Head Condensing air too warm Maximum condenser inlet air = 80°F Pressure too Restricted air cooled condenser Clean condenser high Air in system Recover, evacuate and recharge R-404A Head Condensing air too cold...
Page 76 HUMIDITY TROUBLESHOOTING (Optional Equipment) PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Humidity Steam Generator not functioning Replace, No water in Steam Generator not reaching Heater Failed desired level Water is not connected to unit Check Float switch, water supply Fill Soleniod valve Connect water Water ﬁ...
Page 77 SATURATED TEMPERATURE/PRESSURE CHART TEMP. GAUGE PRESSURE (P.S.I.G.) ºF R-404A R-508B -130 28.0* 3.8* -125 27.5* -120 27.0* -115 26.1* -110 25.5* -105 24.6* 12.8 -100 23.5* 16.8 22.3* 21.4 20.9* 26.3 19.2* 31.8 17.5* 37.8 15.2* 44.3 12.8* 51.5 10.1* 59.3 7.0* 67.7...
Page 78 SATURATED TEMPERATURE/PRESSURE CHART TEMP. GAUGE PRESSURE (bar(g)) ºC HFCR-404A HFC/PFC R-508B -90,0 3,9* -87,2 -84,4 -81,7 -78,9 -76,1 -73,3 -70,6 -67,8 -65,0 -62,2 16,9* -59,4 14,8* -56,7 12,3* -53,9 9,5* -51,1 6,4* -48,3 2,9* -45,6 -42,8 -40,0 -37,2 -34,4 -31,7 10,3 -28,9 11,3...
Page 79: Humidity System Maintenance
CAUTION HUMIDITY SYSTEM MAINTENANCE (Optional Equipment) The demineralizer ﬁ lter The outer casing of the demineralizer ﬁ lter is transparent should be replaced and the crystals are visible. A new cartridge is violet or dark when the color change blue once water has been circulated through it. A spent reaches 3"...
Page 80: Cleaning The Humidity Sensor
NOTE CLEANING THE HUMIDITY SENSOR (Optional Equipment) On units with a recirculating Please refer to the Vaisala manufacturer's manual for maintenance water option, drain and clean and calibration information regarding the humidity sensor and its reservoir every two months components. or sooner as required by usage and water conditions.
Page 81 Why does my chamber heat or cool slower than the published speciﬁ cations? Performance is signiﬁ cantly effected by the characteristics of your test sample. Factors include size, weight, material, shape, and power dissipation if energized. The test sample should be placed in the chamber in a manner that allows for air circulation.
Page 82 cost and can be installed in the ﬁ eld. Dedicated 230V 50Hz models are available for MC(H)-3 units. Note that the cooling performance will be slightly reduced at 50 Hz. Please call Cincinnati Sub-Zero for details on re-conﬁ guring for 50 Hz. operation. How often should I charge the refrigeration system? This chamber uses a closed-loop refrigeration system.
Page 83: How To Contact Csz
The speciﬁ c complaint regarding the failed part. NOTE: CSZ provides a list of parts for all chambers in a Bill of Materials which is included in the manual. The recommended spare parts for your chamber have an asterisk (*) on the le hand margin.
Page 84 THIS PAGE INTENTIONALLY LEFT BLANK SERVICE, PARTS & WARRANTY Page 6-2...
Page 85 ELECTRICAL SCHEMATIC SYMBOLS DISC CONNECTIONS DISCONNECT CONNECTED CONNECTED PUSHBUTTON SWITCH N.O. N.C. DOUBLE POLE LIMIT SWITCH HELD CL. HELD OP. GROUND LIQUID LEVEL SWITCH N.O. N.C. CHASSIS CONNECTION TEMPERATURE SWITCH PLUG & N.O. N.C. RECEPTICAL RECP. TOGGLE SWITCH THERMOCOUPLE CONTACTS N.O.
Page 86 ELECTRICAL SCHEMATIC SYMBOLS OIL PRESSURE LIGHTS - WHITE CONTROL AMBER, RED CONTROL RELAY N.O. N.C. GREEN, BLUE RUN CAP. CIRCUIT BREAKER FUSE VARISTOR TRANSFORMER SOLENOID RESISTOR RELAYS, CONTACTORS, COILS DELTA HEATER FUSED DISCONNECT TO BE SUPPLIED BY CUSTOMER "Y" HEATER Figure 2.
Page 87 REFRIGERATION SCHEMATIC SYMBOLS COMPRESSOR OIL SEPARATOR PRESSURE GAUGE CONDENSER FUSIBLE PLUG FILTER/DRIER CASCADE CONDENSER LIQUID INDICATOR RELIEF VALVE PRESSURE SWITCH VAPOR TANK SERVICE PORT EVAPORATOR SOLENOID VALVE DE-SUPERHEATER EVAPORATOR PRESSURE REGULATOR CAP TUBE DISTRIBUTOR THERMOSTATIC EXPANSION VALVE CHECK VALVE Figure 3. Symbols used on Refrigeration Diagrams SYSTEM DIAGRAMS Page 9-3...
Page 88 THIS PAGE INTENTIONALLY LEFT BLANK SYSTEM DIAGRAMS Page 9-4...

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Microclimate mc-3 Microclimate mcb-1.2