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

TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . 69-99
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Checking the Display Messages . . . . . . . . . . . . 69
Checking Temperature Sensors . . . . . . . . . . . . 69
• RESISTANCE CHECK
• VOLTAGE DROP
• CHECK SENSOR ACCURACY
• DUAL TEMPERATURE SENSORS
Checking Pressure Transducers . . . . . . . . . . . . 70
• COOLER AND CONDENSER PRESSURE
TRANSDUCER AND WATERSIDE FLOW DEVICE
CALIBRATION
• TRANSDUCER REPLACEMENT
Control Algorithms Checkout Procedure . . . . 70
Control Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Control Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
• RED LED (Labeled as STAT)
• GREEN LED (Labeled as COM)

INTRODUCTION

Prior to initial start-up of the 19XR 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 to familiarize those involved
in the start-up, operation and maintenance of the unit with
the control system before performing start-up procedures. Pro-
cedures 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 in-
side 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 com-
ply with the limits for a Class A computing device pur-
suant to Subpart J of Part 15 of FCC Rules, which are
designed to provide reasonable protection against such
interference when operated in a commercial environ-
ment. 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 mea-
sures may be required to correct the interference.
Always store and transport replacement or defective boards
in anti-static shipping bag.
CONTENTS (cont)
Page
Notes on Module Operation . . . . . . . . . . . . . . . . 80
Chiller Control Module (CCM) . . . . . . . . . . . . . . . . 81
• INPUTS
• OUTPUTS
ISM Integrated Starter Module . . . . . . . . . . . . . . 81
• INPUTS
• OUTPUTS
Replacing Defective Processor Modules . . . . 81
• INSTALLATION
Solid-State Starters . . . . . . . . . . . . . . . . . . . . . . . . 81
• TESTING SILICON CONTROL RECTIFIERS
IN BENSHAW, INC. SOLID-STATE STARTERS
• SCR REMOVAL/INSTALLATION
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100,101
INITIAL START-UP CHECKLIST FOR
19XR HERMETIC CENTRIFUGAL
LIQUID CHILLER . . . . . . . . . . . . . . . . . . CL-1 to CL-12

ABBREVIATIONS AND EXPLANATIONS

Frequently used abbreviations in this manual include:
CCM
CCN
CVC
CCW
CW
ECDW - Entering Condenser Water
ECW
EMS
HGBP - Hot Gas Bypass
I/O
ISM
LCD
LCDW - Leaving Condenser Water
LCW
LED
OLTA - Overload Trip Amps
PIC II - Product Integrated Control II
RLA
SCR
SI
TXV
Words printed in all capital letters or in italics may be viewed
on the Chiller Visual Control (CVC) (e.g., LOCAL, CCN,
ALARM, etc.).
Words printed in both all capital letters and italics can also
be viewed on the CVC and are parameters (e.g., CONTROL
MODE, COMPRESSOR START RELAY, ICE BUILD
OPTION, etc.) with associated values (e.g., modes, tempera-
tures, percentages, pressures, on, off, etc.).
Words printed in all capital letters and in a box represent
softkeys on the CVC control panel (e.g., ENTER ,
EXIT , INCREASE , QUIT , etc.).
Factory-installed additional components are referred to as
options in this manual; factory-supplied but field-installed
additional components are referred to as accessories.
The chiller software part number of the 19XR unit is lo-
cated on the back of the CVC.
4
- Chiller Control Module
- Carrier Comfort Network
- Chiller Visual Control
- Counterclockwise
- Clockwise
- Entering Chilled Water
- Energy Management System
- Input/Output
- Integrated Starter Module
- Liquid Crystal Display
- Leaving Chilled Water
- Light-Emitting Diode
- Rated Load Amps
- Silicon Controlled Rectifier
- International System of Units
- Thermostatic Expansion Valve
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