3. Position a coolant receptacle beneath the radiator (hole in the floor panel).
4. Connect a suitable drain hose
7
to the radiator quick-release coupling
6
.
5. Lead the hose through the hole in the floor panel and into the receptacle, securing it in place.
6. Open the drain valve
5
and drain the coolant.
7. Close the drain valve and remove the drain hose.
8. Screw on the filler cap.
9. Close the doors.
➤ Dispose of used coolant in accordance with environmental protection regulations.
Draining coolant (stationary compressors)
Compressor cooling oil and engine coolant drain lines are led to a central point outside the machine
on stationary machines. Coolant is drained via a hose screwed into the radiator drain point. The hose
is provided with a shut-off valve and a plug.
Precondition Machine cooled down.
The «battery isolating switch» is off.
Fig. 49 Radiator with centralised drainage
1
Filler cap
2
Coolant expansion tank
3
Radiator
4
Radiator drain
5
Screw plug
6
Drain valve (ball)
7
Drain hose
1. Open both doors.
2. Unscrew and remove the expansion tank filler cap
1
.
3. Place the coolant receptacle below the radiator drain point
4
.
4. Remove the plug
5
, open the shut-off valve
6
and collect the coolant.
5. Close the valve and replace the plug with sealing ring.
6. Close the doors.
➤ Dispose of used coolant in accordance with environmental protection regulations.
10 Maintenance
10.4 Engine
No.: 9_6975 00 E
Service Manual Screw Compressor
M135 SIGMA CONTROL MOBIL
107
Option sc, si