Blitz VARIS - Oil Contamination and Consumption; Air Leakage and Pressure Relief

Operating instructions
Trouble shooting
12
102620 • 05/2019
Milky colour of oil, water drops in the oil.
The oil consumption is too high.
Air escapes through relief pipe when the compressor is at a standstill.
Air escapes through the relief valve during operation.
The compressor is not relieved when switched off.
Potential reasons
Actions
Water in crankcase (operating temperature is
not made due to short cut-in times).
 Change the oil immediately.
 Retrofit a crankcase heating, if possible.
 Select warmer location.
 Check compressor setting.
Water in crankcase
(caused by humid conditions).
 Change the oil immediately.
 Select dry location.
Potential reasons
Actions
The wrong oil has been used.
 Check the type of oil (cf. chapter 5.2
“Types of oil”), and replace, if and when
necessary.
The piston rings and the cylinder face are
worn.
 Replace the piston rings and the cylinder,
if and when necessary.
 Check the suction filter cartridge, and
replace it, if and when necessary.
The compressor is too hot.
 See Table “Compressor turns too hot”.
Oil escapes through crankcase breather.
 Check / replace crankcase breather.
Potential reasons
Actions
The check valve is leaking.
 Check the check valve, and replace, if and
when necessary.
Potential reasons
Actions
The relief valve is defective.
 Replace the relief valve.
Potential reasons
Actions
The pressure switch of the relief valve is
defective.
 Check the pressure switch and the relief
valve, and replace, if and when necessary.