Fig. 18 Switching on the frost protector
1 Shut-off valve
A – open
B – closed
2 Control line (frost protection)
3 Frost protector
4 Control line (bypass line)
5 Oil separator tank cover
Running the machine with the frost protector (winter operation)
➤
Close the shut-off valve 1
(position B) in the frost protector control line 2 before shutting down
the compressor.
Further information Fill the frost protector with antifreeze (see chapter 10.6.2).
Running the machine without the frost protector (summer operation)
➤
Keep the shutoff valve on the frost protector permanently open (position A) 1
.
8.3.2 Coolant pre-heating
The liquid-cooled engine is equipped with an electric coolant pre-heater.
Material Power supply cable available.
Precondition The recommended pre-heating time is 2-3 hours.
1. Prepare a power supply cable.
2.
Open the connection socket protective cap and hold open.
3. Plug in the supply cable.
4. Plug in the ground conductor.
Result The engine coolant will be pre-heated.
Further information Location of the connection socket, see illustration 7.
8 Operation
8.3 Using the low-temperature equipment
No.: 9_9446 01 USE
SERVICE MANUAL Screw Compressor
M26
57
To Next Page
Loading...
