8.5.3 Option ba
Using the low-temperature equipment
Overview:
■ Pre-heat the drive engine coolant
■ Use antifreeze for the control and regulating system
➤ Follow all instructions!
8.5.3.1 Option bb
Using the coolant pre-heating
1. Start the coolant pre-heating as described in chapter 7.4.3.
2. Pre-heat the drive engine coolant for approx. 3 hours.
Thermal balance achieved.
3. Disconnect the mains plug from the user's power outlet.
4. Disconnect the unit plug from the connection of the machine.
5. Open the enclosure.
6. Stow the power cable inside the machine.
7. Close the enclosure.
➤ Gently start the machine with the pre-heated coolant of the drive engine.
Diesel engines run more efficiently if the diesel engine has been pre-heated. The use of cool‐
ant pre-heating therefore reduces pollutant emissions and the fuel consumption due to the
shortened warm-up phase.
In addition, wear of the drive engine is reduced, thus increasing its service life.
8.5.3.2 Option bc
Using antifreeze
Prior to daily de-commissioning, the machine must be run with switched-on antifreeze for a short
time in order to prevent the control and regulating system of the machine from freezing.
Precondition The machine is switched off.
Air consumers are disconnected,
the outlet valves are open,
the machine is fully vented, the pressure gauge reads 0 bar!
1. Open the enclosure.
2. Set the defroster shut-off valve to winter operation as described in table 74.
Instructions
Switching position for winter oper‐
ation
Complied with?
Open the shut-off valve
X
Close the shut-off valve
—
X ≙ applicable, — ≙ not applicable
Tab. 74 Switch on the antifreeze
3. Close the enclosure.
4. Start the machine.
8
Operation
8.5
Operating the options
No.: 9_9548 22 HCE
Operating Manual Portable Rotary Screw Compressor
MOBILAIR M27 PE
81
