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Hertz HDD 75 - Page 63

Hertz HDD 75
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FAILURES
56
FAULT
CAUSE
REMEDY
Compressor stops due to
high temperature.
Temperature settings changed.
Check the temperature settings.
High ambient temperature.
Check the ambient temperature in the
compressor room, and take any necessary
measures.
Insufficient ventilation.
In a room with a smaller intake window than
the compressor's intake area, the hot air
generated by the compressor can't be
discharged outside the room efficiently. If
the radiator is exposed to direct sunlight, or
there is a high reverse wind blow or a
handicap preventing air discharge. Take
any necessary measures.
Low oil level.
Check the oil level, and complete if low.
Oil filter clogged.
Replace the oil filter.
Expired oil.
The oil with a darker color than usual
means it has expired. Replace the oil. If you
have to perform this task frequently check
the operating conditions.
Air filter dirty/clogged.
Replace the air filter.
Panel filter dirty/clogged.
Check and clean or replace.
Radiator slices and/or fan blades
dirty/clogged.
Check and clean.
Outlet vent is too long or gets narrow.
Take any necessary measures.
Covers open.
Close the covers.
The compressor operates
more noisily as it
approaches the upper
pressure
There is a problem in the motor
bearings.
Check and replace the motor bearings.
Mechanical problem in the screw.
It may be understood from extremely loud
operation. Call the authorized service
station.

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