Insufficient coolant levels can damage the machine!
Insufficient coolant levels will cause the drive engine to overheat. Overheating can cause se‐
rious damage to the engine.
➤ Check the coolant level daily.
➤ Replenish the coolant as necessary.
➤ Remove the left-rear panel.
10.4.1.1 Checking the coolant level
The coolant level in the engine cooling circuit must be checked daily prior to start-up.
The level is checked via the coolant expansion tank:
■ The tank is transparent so the coolant level can be seen from outside.
■ The fluid level should be between the
minimum and maximum marks when the engine is cool.
Fig. 35 Checking the coolant level
1
Coolant level
A
Maximum mark (FULL)
B
Minimum mark (LOW)
2
Filler neck with cap
3
Overflow
4
Coolant expansion tank
5
Coolant cooler
1. Check the level of coolant in the expansion tank.
When the coolant level falls below the
minimum mark
B
: Replenish the coolant.
2. Attach the panel.
Arrange for the cause of the coolant loss to be determined and rectified.
10.4.1.2 Checking the coolant
The coolant should be checked in line with the maintenance schedule to ensure quality and long
service life.
10 Maintenance
10.4 Drive engine maintenance
No.: 901779 08 USE
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M58utility SIGMA CONTROL SMART
105