1. Unscrew and remove the expansion tank filler cap.
2. Position a receptacle beneath the drainage location of the water cooler.
3. Open the shut-off valve
2
on the radiator base.
4. Unscrew the drain plug
6
and allow the coolant to drain into the receptacle.
5. Close the shut-off valve and replace the screwed sealing cap.
6. Screw in the filler cap.
7. Close the door.
➤ Dispose of used coolant in accordance with environmental protection regulations.
Removing scale within the water cooler
After extended periods of use, scale may form in the cooling circuit and within the water cooler in
particular. Due to the resulting poorer heat transfer, the engine may overheat.
1.
Scaling in the cooling circuit!
Damage caused by engine overheating.
➤ Use cooler cleaning agent to remove scaling in the water cooler.
2. Read and follow the manufacturer's instructions for using the cooler cleaning agent.
3. After draining the coolant, use a cooler cleaning agent to descale the water cooler.
10.4.2 Engine air filter maintenance
Clean the filter according to the maintenance schedule or if the maintenance indicator shows this to
be necessary.
Renew the air filter element after 2 years or after it has been cleaned 5 times.
■ Using the drive motor without an air filter element is not permitted!
■ Do not use a filter element with damaged folds or gasket.
■ The use of an unsuitable air filter can permit dirt to enter the engine and cause premature
wear and damage.
Material Compressed air for blowing out
Spare parts (as required)
Cleaning cloths
Precondition The machine is switched off.
The machine is fully vented, the pressure gauge reads 0 psig.
The machine has cooled down.
All compressed air consumers are disconnected and the air outlet valves are open.
Damaged air filter element.
Wear in the engine from intake of contaminated air.
➤ Do not try to clean the filter element by striking or knocking it.
➤ Do not wash the filter element.
10 Maintenance
10.4 Engine maintenance
No.: 901765 05 USE
Operator Manual Screw Compressor
M114 SIGMA CONTROL SMART
109
