LG RCWW-1, Руководство по эксплуатации и техническому обслуживанию

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Chiller Water-cooled Screw
• M1 repair
•
• Repair or replace controller
• M1 error
• Compressor overload
•
•
M1 contactor alarm
• M2 repair
• Repair or replace controller
• M2 error
• •
M2 contactor alarm
• Check voltage
• Repair or replace controller
• Test or replace compressor
•
• Voltage error
•
• Compressor error
•
•
Compressor overload
alarm
•
• Repair or replace controller
• Test or replace compressor
•
• Check external temperature
• Insufficient coolant flux
• Controller AI point error
• Compressor error
•
•
•
•
•
• Set lower anti-freeze setting
• Replace anti-freeze switch
• Check external temperature
• Repair or replace controller
• Supplement refrigerant
• Clean evaporator tube
• Replace M1 or M2
• Insufficient cold water
•
• Anti-freeze setting too high
• Anti-freeze switch error
•
• Controller DI error
• Insufficient refrigerant
•
• M1 or M2 error
•
Low temperature
System oil alarm
Pressure alarm
Displayed alarm
message
•
• Low pressure switch trip
Recognition
• Oil dryer clogged
•
• Oil amount switch error
• Controller DI error
• Insufficient oil
• Insufficient refrigerant
• Refrigerant leakage
•
• Low pressure switch error
• Controller DI point error
Potential cause
• Replace oil dryer
•
• Repair or replace flux switch
• Repair or replace controller
• Charge oil
•
•
•
•
• Repair or replace controller
Potential solution
Increase setting of cold
water outlet temperature
Increase cold water or
replace pump
Test or replace internal
protective switch
Charge refrigerant or review
valve condition
Test or replace internal
protective switch
Check voltage, clean heat
exchanger, repair overload
relay, repair or replace
compressor
Repair or replace oil service
valve
Repair or replace low
pressure switch
Increase low pressure
switch setting.
Necessary test/repair and
charge additional refrigerant
Charge additional
refrigerant
Low pressure switch
setting is too high
Oil service valve error or
closed
Controller DI or DO point
error
Controller DI or DO point
error
Internal protective switch
error
Controller DI or DO point
error
External temperature too
high
Internal protective switch
error
Evaporator tube
contamination
External temperature too
low
Cold water outlet
temperature setting too low
Anti-freeze switch trip
(Switch off)
(Basic: Cold water outlet
temperature
≤ 2 ° C)
Compressor internal
protector trip by high
temperature discharge
temperature (Switch off)
Compressor internal
protector trip by high coil
temperature within
compressor (Switch off)
After operating the
compressor, M2 magnet
contactor contact input
After operating the
compressor, M1 magnet
contractor contact input or
overload relay contact input
(Switch off)
Oil amount switch input
120 seconds after the
compressor operates
(Switch off)