CONTENTS (cont)
Page
Inspect the Heat Exchanger Tubes
. . . . . . . . . . . . . . .
81
•
COOLER
•
CONDENSER
Water Leaks
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
82
Water Treatment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
82
Inspect the Starting Equipment
. . . . . . . . . . . . . . . . .
82
Check Pressure Transducers
. . . . . . . . . . . . . . . . . . .
82
Pumpout System Maintenance
. . . . . . . . . . . . . . . . . .
82
•
OPTIONAL PUMPOUT COMPRESSOR OIL CHARGE
•
PUMPOUT SAFETY CONTROL SETTINGS
Ordering Replacement Chiller Parts
. . . . . . . . . . . . . .
83
•
OPEN-DRIVE MOTOR RENEWAL PARTS
TROUBLESHOOTING GUIDE
. . . . . . . . . . . . . . . . . .
83-97
Overview
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
83
Checking the Display Messages
. . . . . . . . . . . . . . . . .
83
Checking Temperature Sensors
. . . . . . . . . . . . . . . . .
83
•
RESISTANCE CHECK
•
VOLTAGE DROP
•
CHECK SENSOR ACCURACY
•
DUAL TEMPERATURE SENSORS
Checking Pressure Transducers
. . . . . . . . . . . . . . . . .
84
•
OIL DIFFERENTIAL PRESSURE/POWER SUPPLY
MODULE CALIBRATION
Page
•
TROUBLESHOOTING TRANSDUCERS
•
TRANSDUCER REPLACEMENT
Control Algorithms Checkout Procedure
. . . . . . . . . .
85
Control Test
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
85
Control Modules
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
95
•
RED LED
•
GREEN LEDs
Notes on Module Operation
. . . . . . . . . . . . . . . . . . . . .
95
Processor Module (PSIO)
. . . . . . . . . . . . . . . . . . . . . . .
95
•
INPUTS
•
OUTPUTS
Starter Management Module (SMM)
. . . . . . . . . . . . . .
96
•
INPUTS
•
OUTPUTS
Options Modules (8-Input)
. . . . . . . . . . . . . . . . . . . . . .
96
Replacing Defective Processor Modules
. . . . . . . . . .
96
•
INSTALLATION OF NEW PSIO MODULE
17/19EX PHYSICAL DATA AND WIRING
SCHEMATICS
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
97-114
Compressor Fits and Clearances
. . . . . . . . . . . . . . .
102
INDEX
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
115,116
INITIAL START-UP CHECKLIST FOR 17/19EX
CENTRIFUGAL LIQUID CHILLER
. . . . . .
CL-1 to CL-12
INTRODUCTION
Prior to initial start-up of the 17/19EX unit, those in-
volved in the start-up, operation, and maintenance should be
thoroughly familiar with these instructions and other nec-
essary job data. This book is outlined so that you may be-
come familiar with the control system before performing start-up
procedures. Procedures in this manual are arranged in the
sequence required for proper machine 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.
Circuit 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 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.
ABBREVIATIONS
Frequently used abbreviations in this manual include:
CCN
— Carrier Comfort Network
CCW
— Counterclockwise
CHW
— Chilled Water
CHWR — Chilled Water Return
CHWS — Chilled Water Supply
CW
— Clockwise
ECW
— Entering Chilled Water
ECDW — Entering Condenser Water
EMS
— Energy Management System
HGBP
— Hot Gas Bypass
I/O
— Input/Output
LCD
— Liquid Crystal Display
LCDW — Leaving Condenser Water
LCW
— Leaving Chilled Water
LED
— Light-Emitting Diode
LID
— Local Interface Device
OLTA
— Overload Trip Amps
PIC
— Product Integrated Control
PSIO
— Processor Sensor Input/
Output Module
RLA
— Rated Load Amps
SCR
— Silicon Control Rectifier
SMM
— Starter Management Module
TXV
— Thermostatic Expansion Valve
17/19EX MACHINE FAMILIARIZATION
(Fig. 1 - 3)
Machine Identification Label —
The identification
label is located on the right side of the machine control cen-
ter panel. The label contains information on model number,
refrigerant charge, rated voltage, etc.
System Components —
The components include the
cooler and condenser heat exchangers in separate vessels,
motor-compressor, lubrication package, control center,
utility vessel, and motor starter. All connections from pres-
sure vessels have external threads to enable each component
to be pressure tested with a threaded pipe cap during factory
assembly.
4
Summary of Contents for 17
Page 13: ...Fig 6 Open Drive 17 Series Lubrication Cycle 13 ...
Page 15: ...Fig 7 17EX Controls and Sensor Locations 15 ...
Page 16: ...Fig 7 17EX Controls and Sensor Locations cont 16 ...
Page 17: ...Fig 7 17EX Controls and Sensor Locations cont 17 ...
Page 19: ...Fig 8 19EX Controls and Sensor Locations cont 19 ...
Page 23: ...Fig 16 17 19EX LID Menu Structure 23 ...
Page 24: ...Fig 17 17 19EX Service Menu Structure 24 ...
