Carrier 19CB - Manual

Carrier
Airconditioning
C om pany
G
V
Hermetic Centrifugal Liquid Chillers
CONTENTS
INTRODUCTION
General
Job Data Required
Equipment Required
INITIAL PREPARATION
Machine Tightness
Check for Large Leaks
Check for Small Leaks
Check Leakage Rate
Machine Dehydration
Pumpout Procedures
Oil Charge
Oil Heater
Refrigerant Charge
Inspect Piping
Field Wiring
Check Starter
Check Operation of Safety Controls
Purge
Air Supply (Pneumatic Controls Only)
START-UP
Before Starting Machine
Compressor Rotation
Compressor Operation
Checking Safety Control Settings
Setting Operating Controls — Electronic
Motor Current Calibration
Chilled Water Calibration
Setting Operating Controls — Pneumatic
FINAL MACHINE ADJUSTMENT
Trimming Refrigerant Charge
INSTRUCTING THE CUSTOMER
OPERATOR
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INTRODUCTION
General — All persons involved in start-up and
operation of the 19CB machine should be famihar
with these instructions and all necessary job data
before initial start-up. Instructions are arranged in
proper sequence for machine start-up.
Job Data Required
1. List of applicable design temperatures and
pressures
2. Machine assembly, wiring and piping prints
3 19CB Installation Instructions
4. 19CB Operating and Maintenance Instructions
Equipment Required
1. Mechanic’s tools
2 Volt-ohmmeter and clamp-on ammeter
3. Manometer, absolute pressure type
4. Leak detector, halide or electronic
5. Refrigerant drum charging valve (Fig. 5)
6. 5/8-in. SAE X 3/4-in. MPT adapter
7. Five to ten ft of copper tubing or plastic hose
to fit 5/8-in. SAE connections
8. Portable vacuum pump
INITIAL PREPARATION
CAUTION: Do noi start compr&ssox or oil
pump, even for a rotation check, unless conv
pxessor is charged with
with refrigerant.
Do not apply voltage of my kina wihle
machine is under dehydration vacuum.
© Carrier Corporation 1973 Form 19CB-2SS