COMPRAG ARD-1108-270 11110015 - Инструкция по эксплуатации - Страница 38

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Version 2.2

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.