Fig. 27 Checking the cooling oil level
1 Minimum oil level
2 Maximum oil level
3 Optimum oil level
1. CAUTION!
Danger of burning - hot surfaces!
➤ Wear long-sleeved clothing and protective gloves.
2. Check the oil level with machine running under LOAD.
Result As soon as the minimum level is reached: Replenish the cooling oil.
10.14 Venting the machine (de-pressurising)
Venting takes place in three stages:
■ Isolate the compressor from the gas network.
■ Vent the oil separator tank.
■ Gas is vented manually from the gas cooler.
The machine must be isolated from the gas network and completely vented before undertak‐
ing any work on the pressure system.
Material The maintenance hose with hose coupling and shut-off valve needed for venting is stowed beneath
the oil separator tank.
Precondition The supply disconnecting device is switched off.
The disconnecting device is locked off.
A check has been made that no voltage is present.
CAUTION
Escaping oil mist is damaging to health.
➤ Do not direct the maintenance hose at persons while venting.
➤ Do not inhale the oil mist.
10 Maintenance
10.14 Venting the machine (de-pressurising)
66
Service Manual Screw Compressor
ESD 442/14 bar (abs) SFC SIGMA CONTROL 2 ESD_2C_10357405_10–LIN_00 E
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