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6.5 Compressor
The oil level and oil colour of the compressor should be inspected once per week. The air filter of the
compressor should be cleaned every 48 hours. Only use air to clean the air filter. Replace the air filter at least
once every 6 months or 450 working hours (whichever comes first).
The red point on the oil level glass indicates the normal oil level. (About 0.25 liter.)
The oil in the crank case lubricates all moving parts so that no other lubrication is necessary.
The oil in the compressor should be clear and transparent. If the oil is dark and dirty it has to be replaced.
Oil change
Carry out the first oil change after 48 working
hours, then after 450 working hours when
using synthetic oil, and after 150 working hours
when using mineral oil. Please note that oil
change must be carried out at least once every
6 months.
Use only oil especially intended for
compressors, according specification C.T. 68
(ISO 68- viscosity).
Blastrac Compressor oil – Part nr. E00498
Prior to draining off the oil, the compressor unit
should have operating temperature.
Check oil level 2 or 3 minutes after stopping.
The compressor is factory filled with synthetic
oil. Because of the rough conditions Blastrac
recommends to use synthetic oil.
Oil must be visible in oil sight glass but never above or below the red point.
After approximately 20 operating hours check the belt tension of the compressor. When the tension is too low
the belt will slip and when the tension is too high, the belt may break and cause damage to the bearings.
When the belt can be pressed in by hand 5 - 10mm, it has
the correct tension. (At +/- 10 kg pressure)
If the compressor does not attain the required working pressure or becomes too hot, check the following:
- Suction filter
- Valves and seals
- V-belt tension
- Rotating direction of the flywheel
- Oil level and quality of oil
- Loose bolts
- Leaks in the system
- Non-return valve
- Dirty cooling ribs
- Drain valve for water release
IMPORTANT
Make sure the compressor cannot turn on and make sure there is no pressure in the system
before dismantling any part of the compressor.
