Carrier FLOTRONIC II 30GN040-420 - Manual

Controls, Operation, and
Troubleshooting
with Microprocessor Controls and Electronic Expansion Valves
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . 2-5
Processor Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Low-Voltage Relay Module . . . . . . . . . . . . . . . . . . . 4
Electronic Expansion Valve Module . . . . . . . . . . . 4
Options Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Keypad and Display Module
(Also Called HSIO or LID) . . . . . . . . . . . . . . . . . . 4
Control Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Electronic Expansion Valve (EXV) . . . . . . . . . . . . 4
Thermostatic Expansion Valves (TXV) . . . . . . . . 4
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Compressor Protection Control
Module (CPCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
OPERATION DATA . . . . . . . . . . . . . . . . . . . . . . . . . . 5-46
Capacity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Head Pressure Control . . . . . . . . . . . . . . . . . . . . . . 24
• EXV UNITS
• TXV UNITS
Pumpout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
• EXV UNITS
• TXV UNITS
Keypad and Display Module
(Also Called HSIO or LID) . . . . . . . . . . . . . . . . . 24
• ACCESSING FUNCTIONS AND SUBFUNCTIONS
• AUTOMATIC DEFAULT DISPLAY
• AUTOMATIC DISPLAY OPERATION/DEFAULT
DISPLAY
• KEYPAD OPERATING INSTRUCTIONS
• STATUS FUNCTION
• TEST FUNCTION
• HISTORY FUNCTION
• SET POINT FUNCTION
• SERVICE FUNCTION
• SCHEDULE FUNCTION
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 47-64
Checking Display Codes . . . . . . . . . . . . . . . . . . . . 47
Page
Unit Shutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Complete Unit Stoppage . . . . . . . . . . . . . . . . . . . . 48
Single Circuit Stoppage . . . . . . . . . . . . . . . . . . . . . 48
Lag Compressor Stoppage . . . . . . . . . . . . . . . . . . 48
Restart Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 48
• POWER FAILURE EXTERNAL TO THE UNIT
Alarms and Alerts . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Compressor Alarm/Alert Circuit . . . . . . . . . . . . . 50
Electronic Expansion Valve (EXV) . . . . . . . . . . . 55
• EXV OPERATION
• CHECKOUT PROCEDURE
Thermostatic Expansion Valve (TXV) . . . . . . . . . 57
Thermistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
• LOCATION
• THERMISTOR REPLACEMENT (T1, T2, T7, T8)
Pressure Transducers . . . . . . . . . . . . . . . . . . . . . . 60
• TROUBLESHOOTING
• TRANSDUCER REPLACEMENT
Control Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
• PROCESSOR MODULE (PSIO), 4IN/4OUT
MODULE (SIO), LOW-VOLTAGE RELAY
MODULE (DSIO-LV), AND EXV DRIVER
MODULE (DSIO-EXV)
• RED LED
• GREEN LED
• PROCESSOR MODULE (PSIO)
• LOW-VOLTAGE RELAY MODULE (DSIO)
• 4IN/4OUT MODULE (SIO)
ACCESSORY UNLOADER INSTALLATION . . . 64-68
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
• 040-110, 130 (60 Hz) UNITS
(And Associated Modular Units)
• 130 (50 Hz), 150-210 UNITS
(And Associated Modular Units)
FIELD WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69,70
REPLACING DEFECTIVE PROCESSOR
MODULE (PSIO) . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
30GN040-420
Flotronic™ II Reciprocating Liquid Chillers
50/60 Hz
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2
Tab
5c
PC 903 Catalog No. 563-079 Printed in U.S.A. Form 30GN-3T Pg 1 7-95 Replaces: 30G-1T