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9.3.2 MAINTENANCE
Before attempting any maintenance jobs on the compressor, make sure of the following:
-Master power switch in position “OFF”.
-Pressure switch and the control unit switch all off, in position “OFF”.
-No pressure in the tank.
Every 50 hours of duty: we advise you to dismantle the suction filter and clean the filtering element
by blowing compressed air on it . You are recommended to replace the filter element at least
once if the compressor operates in a clean environment, but more frequently if in a dusty environment.
The compressor generates condensate water which accumulates in the tank. The condensate in the tank
must be drained at least once a week, by opening the drain tap under the tank. Take care if there
is compressed air inside the cylinder, and water could flow out with considerable force. Recommended
pressure :1-2 bar. Condensate of compressors that are oil lubricated must not be drained into the sewer
or dispersed in the environment as it contains oil.
9.3.3 OIL CHARGE-TOPPING UP WITH OIL
The compressor is filled with synthetic oil “SAE 5W50”.
We recommend a full change of oil in the pumping element within the first 100 hours of duty.
The soundproofing cabinet is to be taken off first in the Silent model Unscrew the oil drain plug
on the housing cover, allow all the oil to flow out, and re-screw the plug Pour oil into the upper
hole of the housing cover until it reaches the level indicated on the indicator
Once a week : check oil level of the pumping element and see if it needs topping up. For operation
at ambient temperature in the range -5
℃
to 35
℃
, use “SAE 5W50” synthetic oil. The advantage of this
oil is that does not lose its characteristics either in winter or summer.
Do not drain used oil into the sewer or dispose of it in the environment.
9.3.4
9.4.1
9.4.2
9.4 TROUBLESHOOTING
TYPE OF OIL HOURS OF DUTY
SYNTHESIS…………………………500
Synthetic oil:
(MOBLE, SHELL, ESSO, BP or OTHERS) …………300
Other types of oil: mineral multigrade
SAE 15 W40…………………………100
WHAT TO DO IF SMALL MALFUNCTION OCCUR
Loss air in valve under pressure switch
This trouble depends on poor tightness of the check valve - take the following action :
-Discharge air pressure from the tank
-Unscrew the hexagon-head of the valve (A)
-Carefully clean both the rubber disk (B) and its seat
-Refit all parts accurately
Air losses
These can be caused by poor tightness of a union – check all unions, wetting them with soapy water.
Summary of Contents for CT4539
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