Comprag 11410101, Operating Manual

Page: 36 / 108

36 Version 1.4
5.9 Checking suction valve
In order to access the intake valve, the air filter has to be removed in accordance with section 5.5.
Then open the air throttle by hand, ensuring that it has a smooth stroke and can be opened
fully. If the air throttle jams or doesn’t operate fully, then replace the valve with a new one.
5.10 Servicing bearings of electric motor
When the compressor is used, fresh viscous lubricant (formulated for rolling bears) should be
added to the motor’s bearings. Lubricant should be added using a special syringe for viscous
lubricants through lubricators accommodated in the motor’s bearing caps. The volume of
lubricant added can be calculated using the formula:
D
2
motor shaft
(mm)x0.005=M
(lubricant mass)
(g).
Do not over-lubricate the bearings beyond the standard level as all excess lubricant will be
squeezed out of the bearings into the motor when the motor is running.
6. Fault handling
6.1 Faults and corrective actions
Problem Possible faults Corrective actions
The compressor starts up with
lag. There is a slow build up in
the electric motor’s speed.
The belt is overtightened.
Tighten the belt with the rel-
evant load.
The oil is thick. Replace the oil.
There’s a whistling during the
compressor’s operation.
The belt is slipping.
Tighten the belt with the appro-
priate tensile force (see section
5.3 Checking drive belt).
The compressor won’t start.
There’s a temperature block on
the control unit’s display.
The ambient air temperature in
the facility does not meet the
required temperature (below +5
°C or above +40 °C).
Ensure the necessary ambi-
ent air temperature where the
compressor is installed.
The compressor is overheating.
There’s insufficient ventilation in
the facility where the compres-
sor is installed.
Increase the air circulation
inside the facility.
The oil level is too low. Top up oil.
The radiator is dirty.
Blow down the radiator with
compressed air.
The safety-relief valve of the
separator tank is activated.
The separator is dirty.
Perform maintenance by replac-
ing the separator.
The pressure is too high
(over13 bar).
Set the working pressure below
13 bar.