FRIULAIR AMD 3-168, Руководство пользователя по техническому обслуживанию и запасным частям

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AMD 3 AMD 3 AMD 3 AMD 3----168 168 168 168 ----EN EN EN EN----
6.2. TROUBLESHOOTING
Only qualified personnel should perform troubleshooting and or maintenance operations.
Prior to performing any maintenance or service, be sure that:
•
no part of the machine is powered and that it cannot be connected to the mains supply.
•
no part of the machine is under pressure and that it cannot be connected to the compressed air
system.
•
Maintenance personnel have read and understand the safety and operation instructions in this
manual.
Before attempting any maintenance operation on the dryer, shut it down and wait at least 30
minutes.
Some components can reach high temperature during operation. Avoid contact until system or
component has dissipated heat.
SYMPTOM POSSIBLE CAUSE - SUGGESTED ACTION
The dryer doesn't start.
Verify that the system is powered.
Verify the electric wiring.
The compressor doesn’t
work.
Activation of the compressor internal thermal protection - wait for 30 minutes, then
retry.
Verify the electric wiring.
Where installed - Replace the internal thermal protection and/or the start-up relay
and/or the start-up capacitor and/or the working capacitor.
Where installed - The pressure switch PA has been activated - see specific point.
Where installed - The pressure switch PB has been activated - see specific point.
Where installed - The safety thermo-switch TS has been activated - see specific
point.
If the compressor still doesn’t work, replace it.
The fan of the condenser
doesn’t work.
Verify the electric wiring.
AMD 3-32 - The DMC15 electronic controller is faulty - replace it.
AMD 43-168 - PV pressure switch is faulty - replace it.
If the fan still doesn't work, replace it.
DewPoint too low.
AMD 3-32 - The fan is always ON - the yellow LED of DMC15 controller is
glowing continuously - see specific point.
AMD 43-168 - The fan is always ON - PV pressure switch is faulty - replace it.
Ambient temperature is too low - restore de nominal condition.
The hot gas by-pass valve is out of setting - contact a refrigeration engineer to
restore the nominal setting.
DewPoint too high.
The dryer doesn't start - see specific point.
The T1 DewPoint probe doesn’t correctly detect the temperature - ensure the
sensor is pushed into the bottom of copper tube immersion well.
The refrigerating compressor doesn’t work - see specific point.
The ambient temperature is too high or the room aeration is insufficient - provide
proper ventilation.
The inlet air is too hot - restore the nominal conditions.
The inlet air pressure is too low - restore the nominal conditions.
The inlet air flow rate is higher than the rate of the dryer - reduce the flow rate -
restore the normal conditions.
The condenser is dirty - clean it.
The condenser fan doesn’t work - see specific point.
The dryer doesn’t drain the condensate - see specific point.
The hot gas by-pass valve is out of setting - contact a refrigeration engineer to
restore the nominal setting.
There is a leak in the refrigerating fluid circuit - contact a refrigeration engineer.
Excessive pressure drop
within the dryer.
The dryer doesn’t drain the condensate - see specific point.
The DewPoint is too low - the condensate is frost and blocks the air - see specific
point.
Check for throttling the flexible connection hoses.