7. Stop the engine.
8. Remove the left-rear panel.
9. Check the coolant level.
If the coolant level in the expansion tank has decreased: Replenish the coolant.
10. Visually inspect for leaks.
11. Attach the panel.
10.4.1.5 Draining the coolant
Precondition The machine has cooled down.
The «battery isolating switch» is switched off.
The coolant is drained at the drive engine's coolant cooler. Draining is carried out via a shut-off
valve by means of a separate drain hose.
Fig. 37 Draining the coolant from the engine coolant cooler
1
Oil cooler
2
Coolant cooler
3
Drain plug, draining line of the oil-tight
floor pan
4
Coolant drain coolant cooler
5
Drain hose with male fitting
6
Quick-release coupling
7
Shut-off valve (ball valve)
I - Open
0 - Closed
8
Rear view, air exhaust louvre box removed
1. Loosen and remove the coolant expansion tank filler cap.
2. Remove the air exhaust louvre box from the rear of the machine.
3. Position a receptacle beneath the coolant drain of the coolant cooler.
4. Connect a suitable drain hose
5
to the coolant cooler quick-release coupling
6
.
5. Hang and secure the free end of the drain hose in the receptacle.
6. Open the shut-off valve
7
and catch the draining coolant.
7. Close the shut-off valve and remove the drain hose.
8. Replace the plug in the filler neck.
9. Install the louvre box and the panel.
➤ Dispose of used coolant in accordance with environmental protection regulations.
10 Maintenance
10.4 Drive engine maintenance
108
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M58utility SIGMA CONTROL SMART
No.: 901779 08 USE
