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SC901P

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SC901P

4 .   M A I N T E N A N C E

Failure to carry out maintenance tasks, 
may invalidate the warranty on your 

 

compressor.

In order to keep the compressor in good 
working condition, regular maintenance is 
essential.

WARNING

Service and maintenance must be 
performed by an authorised agent. DO 
NOT tamper with, or attempt to adjust 
the pressure switch or safety valve. 
Before moving or carrying out any 
maintenance on the compressor make 
sure that the ignition switch is OFF and 
the air tank pressure has been vented 
and the  compressor has been allowed 
to cool down for a period of time.

Operations to be carried out after the first 
60 hours of use:

 Check that all bolts and nuts are tight, 

particularly those retaining the crank case 
and cylinder head.

• Replace the lubricating oil.

Operations to be carried out daily:

• 

Drain condensation by opening the 

valve located under the tank.

Tank drain valve

•  Check pump oil level. 
•  Check engine oil level.
•  Check all guards and covers are  

secure.

•  Check for fuel and oil leaks.
•  Check for unusual noises or vibrations.

Operations to be carried out weekly (or 
more frequently in dusty environments):

• Remove and clean the air filter by blow-

ing through from the clean side with an air-
line at low pressure.

•  Re-place the filter, cover and screw. 

DO NOT operate the compressor 

 

without an air filter as foreign bodies or 
dust could damge the pump and will 

 

invalidate the warranty.

• Clean the compressor. DO NOT use a 

pressure washer or hose pipe to clean the 
compressor as water could penetrate criti-
cal components and cause machine failure.

• Check that the relief valve vents pump 

output and reduces engine speed when 
maximum pressure is reached.

•  Check that the compressor restarts 

pressure build up automatically at 2 bar be-
low maximum pressure.

Operations to be carried out monthly:

• Check belt tension.

• A weight of 3 kg applied at the belt 

mid-point should give a deflection of 

 

approximately 10 mm.

• If adjustment is required, maintain the 

alignment of the two pulleys. Adjust by 
repositioning the engine using the screw 
adjuster.

Operations to be carried out every 100 working hours:

• Change the air filter element.

• Replace the pump lubrication oil with an oil suitable for temperatures ranging from -5 °C 

to 45°C, viscosity Type 68 compressor oil.

• Drain the oil when it is warm, not hot, as this will drain more effectively.
• Place a suitable container under the oil pan and remove the drain plug.
• Once all the oil has drained, replace the oil plug and refill with new oil to the correct 

level.

• Replace the engine oil with semi-synthetic SAE15w40 engine oil.
• Check all tube fittings and electrical connections.
• Inspect the pressure tank inside and out for damage or corrosion.

Maintenance operations

Daily Weekly Monthly Every 100 h

Drain condensation from tank

Check for oil leaks

Check oil level

Check guards and covers

Check for noise and vibrations

Check for air leaks

Clean compressor

Clean air filters

Check safety release valve

Check belt tension

Change pump oil

Replace air filter

Check all fittings

Inspect pressure tank

Change engine oil

4 .   M A I N T E N A N C E

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