Carrier AquaEdge 19MV, Руководство по запуску, эксплуатации и техническому обслуживанию

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REFRIGERATION LOG CARRIER 19MV SEMI-HERMETIC CENTRIFUGAL REFRIGERATION MACHINE
PLANT______________________ MACHINE MODEL NO.______________________ MACHINE SERIAL NO. _______________________
REMARKS: Indicate shutdowns on safety controls, repairs made, and
inhibitor or refrigerant added or removed. Include amounts.
Fig. 35 — Refrigeration and Service Log
PUMPOUT AND REFRIGERANT
TRANSFER PROCEDURES
Preparation
The 19MV chiller system may include an optional pumpout stor-
age tank, pumpout system, or pumpout compressor. The refriger-
ant can be pumped for service work to either the chiller com-
pressor vessel or chiller condenser vessel by using the optional
pumpout system. If a pumpout storage tank is supplied, the re-
frigerant can be isolated in the storage tank. The following pro-
cedures describe how to transfer refrigerant from vessel to vessel
and perform chiller evacuation.
Operating the Optional Pumpout Unit
Oil should be visible in the pumpout unit compressor sight
glass under all operating conditions and during shutdown. If oil
is low, add oil.
TO READ REFRIGERANT PRESSURES (during pumpout or
leak testing):
DESCRIPTION
DATE
EVAPORATOR
REFRIGERANT
PRESSURE SAT
LIQUID TEMP
WATER
FLOW
TEMP IN
TEMP OUT
CONDENSER
REFRIGERANT
PRESSURE
TEMP SAT
LEVEL
WATER
FLOW
TEMP IN
TEMP OUT
COMPRESSOR CAPACITY
GV1 ACTUAL POS
GV2 ACTUAL POS
DRIVE TRAIN
MOTOR
RUNNING AMPS
TEMPERATURE
VFD ACTUAL SPEED
MCB
CLEARANCE CHECK
VALUES
TAKE PICTURE OF THE
"MCB CLEARANCE CHECK"
SCREEN FOR FUTURE
REFERENCE.
CAUTION
The power to the pumpout compressor oil heater must be
on whenever any valve connecting the pumpout compres-
sor to the chiller or storage tank is open. Leaving the heater
off will result in oil dilution by refrigerant and can lead to
compressor failure.
If the compressor is found with the heater off and a valve
open, the heater must be on for at least 4 hours to drive the
refrigerant from the oil. When heating the oil the compres-
sor suction must be open to a vessel to give the refrigerant a
means to leave the compressor.
CAUTION
Always run the chiller cooler and condenser water pumps
and always charge or transfer refrigerant as a gas when the
chiller pressure is less than 35 psig (241 kPa). Below these
pressures, liquid refrigerant flashes into gas, resulting in ex-
tremely low temperatures in the cooler/condenser tubes and
possibly causing tube freeze-up.
DANGER
During transfer of refrigerant into and out of the optional
storage tank, carefully monitor the storage tank level gage.
Do not fill the tank more than 90% of capacity to allow for
refrigerant expansion. Overfilling may result in damage to
the tank or the release of refrigerant which will result in
personal injury or death.
CAUTION
Do not mix refrigerants from chillers that use different
compressor oils. Compressor damage can result.