Carrier 30HK Installation, Start-Up And Service Instructions Manual

Carrier Parkway • Syracuse NY 13221
Reciprocating Liquid Chillers (60 Hz)
All 208/230-volt units have extended-voltage
compressor motors.
All units have suction-cutoff unloading
system.
CONTENTS
Page
SAFETY CONSIDERATIONS. I
INSTALLATION.1-6
Step 1 - Inspect Shipment. 1
Step 2 - Rig and Place Unit. I
• RIGGING
• PLACEMENT
Step 3 - Check Compressor Mounting
and Connections. 3
• SERVICE ACCESS
Step 4 - Make Piping Connections. 3
• CONDENSER DESCRIPTION
• CONDENSER PIPING
• COOLER DESCRIPTION
• COOLER PIPING
Step 5 - Make Electrical Connections .4
• ELECTRICAL BOX, CONTROL SECTION
• UNBALANCED 3-PHASE SUPPLY
VOLTAGE
• ELECTRICAL BOX, POWER SECTION
START-UP AND SERVICE.6
Initial Check. 6
Check Refrigerant Charge. 6
• LIQUID CHARGING METHOD
Check Oil Charge. 7
• TO ADD OIL
• TO REMOVE OIL
START-UP.7-10
Check Refrigerant Feed Components. 7
• THERMOSTATIC EXPANSION VALVE
• FILTER DRIER
• MOISTURE-LIQUID INDICATOR
• LIQUID-LINE SERVICE VALVE
• LIQUID-LINE SOLENOID VALVE
• PRESSURE RELIEF DEVICES
• CHECK VALVE
Check Compressor Protection Devices. 8
• CIRCUIT BREAKER
• MOTOR OVERTEMPERATURE
THERMOSTAT
• CRANKCASE HEATER
• TIME GUARD® CONTROL
• FOUR-FUNCTION TIMER
• OIL PRESSURE SAFETY
SWITCH (OPS)
Check Unit Safety Devices.9
• SAFETY THERMOSTAT
• HIGH-PRESSURE SWITCH
• LOW-PRESSURE SWITCH
Check Capacity Control System. 10
• DESCRIPTION
• 3-STEP TEMPERATURE
CONTROLLER
DESIGN SET POINT ADJUSTMENT
CYLINDER UNLOADING SYSTEM
Page
UNIT OPERATION.10-11
Control Power. 10
Control Sequence. 11
Unit Stoppage and Restart. 11
SERVICING COOLER.11-13
Tube Plugging. 12
Retubing . 12
Tightening Cooler Head Bolts . 12
• GASKET PREPARATION
• BOLT TORQUES
• BOLT TIGHTENING SEQUENCE
TROUBLESHOOTING GUIDE.14,15
SAFETY CONSIDERATIONS
Installation, start-up and servicing of this
equipment can be hazardous due to system pres¬
sures, electrical components and equipment
location (roofs, elevated structures, etc.).
Only trained, qualified installers and service
mechanics should install, start-up and service
this equipment.
When working on the equipment, observe pre¬
cautions in the literature, tags, stickers and labels
attached to the equipment and any other safety
precautions that apply.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Use care in handling, rigging and setting bulky
equipment.
INSTALLATION
Step 1 - Inspect Shipment
Inspect unit for damage or missing parts. If dam¬
age is detected, or if shipment is incomplete, file a
claim immediately with the shipping company.
Step 2 - Rig and Place Unit
RIGGING
On each end of cooler, a steel loop is provided for
the preferred method of lifting unit. Use spreader
bars to keep cables away from compressor enclo^
sure and control box. If unit is to be moved by fork
truck, use the following methods:
1. From front or rear, lift under the cooler rails.
Unit can be either on or off skid.
2. When moving from ends, leave unit on skid. Lift
from under skid.
© Carrier Corporation 1983
Form 30HK,HL-10SI