Introduction; Abbreviations And Explanations - Carrier 19XL Start-Up, Operation And Maintenance Instructions Manual

Water Leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Water Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Inspect the Starting Equipment . . . . . . . . . . . . . . 65
Check Pressure Transducers . . . . . . . . . . . . . . . . 65
Optional Pumpout System Maintenance . . . . . . 65
• OPTIONAL PUMPOUT COMPRESSOR OIL
CHARGE
• OPTIONAL PUMPOUT SAFETY CONTROL
SETTINGS
Ordering Replacement Chiller Parts . . . . . . . . . . 65
TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . 66-97
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Checking the Display Messages . . . . . . . . . . . . . 66
Checking Temperature Sensors . . . . . . . . . . . . . . 66
• RESISTANCE CHECK
• VOLTAGE DROP
• CHECK SENSOR ACCURACY
• DUAL TEMPERATURE SENSORS
Checking Pressure Transducers . . . . . . . . . . . . . 66
• TRANSDUCER REPLACEMENT
Control Algorithms Checkout Procedure . . . . . 67
Control Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

INTRODUCTION

Prior to initial start-up of the 19XL unit, those involved in
the start-up, operation, and maintenance should be thor-
oughly familiar with these instructions and other necessary
job data. This book is outlined so that you may become
familiar with the control system before performing start-up
procedures. Procedures in this manual are arranged in the
sequence required for proper chiller start-up and operation.
This unit uses a microprocessor control system. Do not
short or jumper between terminations on circuit boards
or modules; control or board failure may result.
Be aware of electrostatic discharge (static electricity) when
handling or making contact with circuit boards or mod-
ule connections. Always touch a chassis (grounded) part
to dissipate body electrostatic charge before working
inside control center.
Use extreme care when handling tools near boards and
when connecting or disconnecting terminal plugs. Cir-
cuit boards can easily be damaged. Always hold boards
by the edges and avoid touching components and
connections.
This equipment uses, and can radiate, radio frequency
energy. If not installed and used in accordance with
the instruction manual, it may cause interference to
radio communications. It has been tested and found to
comply with the limits for a Class A computing device
pursuant to Subpart J of Part 15 of FCC (Federal Com-
munication Commission) Rules, which are designed to
provide reasonable protection against such interference
when operated in a commercial environment. Operation
of this equipment in a residential area is likely to cause
interference, in which case the user, at his own expense,
will be required to take whatever measures may be re-
quired to correct the interference.
Always store and transport replacement or defective boards
in anti-static shipping bag.
CONTENTS (cont)
Page
Control Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
• RED LED
• GREEN LEDs
Notes on Module Operation . . . . . . . . . . . . . . . . . . 78
Processor Module (PSIO) . . . . . . . . . . . . . . . . . . . . 79
• INPUTS
• OUTPUTS
Starter Management Module (SMM) . . . . . . . . . . 79
• INPUTS
• OUTPUTS
Options Modules (8-Input) . . . . . . . . . . . . . . . . . . . 79
Replacing Defective Processor Modules . . . . . . 80
• INSTALLATION
Solid-State Starters . . . . . . . . . . . . . . . . . . . . . . . . . 81
• TESTING SILICON CONTROL RECTIFIERS
IN BENSHAW, INC. SOLID-STATE STARTERS
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98,99
INITIAL START-UP CHECKLIST FOR
19XL HERMETIC CENTRIFUGAL
LIQUID CHILLER . . . . . . . . . . . . . . . . . . . CL-1-CL-12

ABBREVIATIONS AND EXPLANATIONS

Frequently used abbreviations in this manual include:
CCN
CCW
CW
ECW
ECDW - Entering Condenser Water
EMS
HGBP - Hot Gas Bypass
I/O
LCD
LCDW - Leaving Condenser Water
LCW
LED
LID
OLTA - Overload Trip Amps
PIC
PSIO
RLA
SCR
SI
SMM
TXV
The 19XL chillers use HCFC-22 and HFC-134a refrig-
erant. When referencing refrigerant charges in this manual,
the HCFC-22 charge will be listed first and the HFC-134a
value will be shown next to it in brackets [ ].
Words printed in all capital letters and italics represent val-
ues that may be viewed on the LID.
The PSIO software version number of your 19XL unit will
be located on the front cover.
4
- Carrier Comfort Network
- Counterclockwise
- Clockwise
- Entering Chilled Water
- Energy Management System
- Input/Output
- Liquid Crystal Display
- Leaving Chilled Water
- Light-Emitting Diode
- Local Interface Device
- Product Integrated Control
- Processor Sensor Input/Output Module
- Rated Load Amps
- Silicon Control Rectifier
- International System of Units
- Starter Management Module
- Thermostatic Expansion Valve
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