GEA RedGenium, Инструкция по эксплуатации, Страница: 105 / 118

Please consult the safety regulations within this documentation for information
about what to do in the case of leaking refrigerant.
11.4 Instructions regarding malfunctions, their causes and remedies
The products manufactured by GEA Refrigeration Germany GmbH are highly
advanced, automatic and extremely efficient systems. Faults can occur neverthe-
less and impede continuous working of the system or cause a failure of a part or
of the entire system.
Fault table
Fault Cause Remedy
The compressor(s) do not start after
switching on or switch off again immedi-
ately after the start. Alarm LED is lit.
The electrical circuit is interrupted by a
device in the safety chain. Eliminate cause of fault and acknowledge
alarm. See control operating instructions.
Product status is START LIMIT. Control is waiting for a time value to
expire.
See control operating instructions, chapter
"Parameter settings".
Cooling medium temperature (heat carrier
temperature) too low Reduce cooling medium flow (heat carrier
flow) at start-up.
No oil pressure builds up in the compres-
sor.
The oil circuit is blocked by clogged oil fil-
ters. Exchange or clean oil filter elements, add
oil if necessary.
External safety. External safety device (e.g. EMERGENCY
STOP) has been activated. Eliminate cause and deactivate external
safety devices.
The compressors do not adapt to the
required capacity. The capacity control device is malfunction-
ing due to disturbances in the oil circuit or
mechanical influences. Check and repair the capacity control
device for the compressor.
Product output does not increase although
the refrigerant temperature is way above
the set point. Product status is LIMIT Output increase is prevented by high
motor current or high discharge pressure.
Check the settings in the control menu
(see control operating instructions).
Suction pressure too low, output drops. Slow loss of refrigerant through leaks in
the refrigerant circuit or Suction pressure
too low. Check the entire system for leaks. Repair
leakage, top up refrigerant when neces-
sary.
Air in secondary refrigerant circuit. Secondary refrigerant circuit vented.
No secondary refrigerant volume flow rate
or too low. Check secondary refrigerant pump, filter
and control valves.
Pressure sensor defective. Replace pressure sensor.
Suction filters are clogged. Clean or replace the filter insert.
Stop valve in suction line or in liquid line
not opened wide enough. Open stop valves completely.
No refrigerant flow to the evaporator. Check the electronic expansion valve.
Too much oil carried from the compressor.
The heat transfer capacity of the evapora-
tor decreases. Check if evaporator is oiled up, drain oil
when necessary. Check the oil return.
Discharge pressure too low. Check cooling medium control (heat carrier
control ) or capacity control of the con-
denser.
Defective capacity control device on the
compressor. Check capacity control devices, connec-
tions for solenoid valves.
Suction pressure too high. Secondary refrigerant temperature too
high. Reduce secondary refrigerant volume flow
rate.
Alarms
Instructions regarding malfunctions, their causes and remedies
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