6. Connect the mains plug to the user's power outlet.
The heating element of the pre-heating device warms up the drive engine’s coolant.
7. Note the pre-heating time of approx. 3 hours.
7.4.3.2 Option bc
Checking the shut-off valve of the defroster
When the ambient temperatures are constantly below 0°C (winter operation), individual compo‐
nents of the control system must be moistened with anti-freeze. A defroster has been installed to
meet this requirement. Adding antifreeze to the air flow of the control system for a short time only
then makes sense when the machine is de-commissioned daily.
The heat generated by the machine prevents individual components of the control system from
freezing up during operation. In order to prevent unnecessary use of antifreeze during the ma‐
chine’s operation, a shut-off valve blocks the constant addition of antifreeze to the air flow of the
control system.
See Fig. 17 for the switching positions of the corresponding shut-off valve.
The correct switching position for summer operation may vary depending on the model.
Please see Table 68 for the correct switching position of your machine.
Fig. 17 Shut-off valve of switching position
1
Shut-off valve closed
2
Open shut-off valve
3
Shut-off valve
4
The lever is positioned across the flow di‐
rection
5
The lever is positioned in the flow direction
Precondition The machine is switched off and cooled down.
Air consumers are disconnected,
the outlet valves are open,
the machine is fully vented, the pressure gauge reads 0 bar!
The negative cable to the battery is disconnected.
1. Check the level of the antifreeze in the defroster tank, see chapter 10.9.5.
2. Check the position of the shut-off valve during the daily start-up of the machine.
Instructions
Switching position for summer op‐
eration
Complied with?
Open the shut-off valve
—
X ≙ applicable, — ≙ not applicable
7
Initial Start-up
7.4
Low-temperature operation
No.: 9_9548 22 HCE
Operating Manual Portable Rotary Screw Compressor
MOBILAIR M27 PE
63
Option bc
Содержание MOBILAIR M27 PE
Страница 2: ...Original instructions KKW M27 2 23 en Z2 SBA MOBILAIR PE 20211108 100635...
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