10.3 Drive engine maintenance
➤ Carry out maintenance according to the schedules in chapter 10.2.
10.3.1 Coolant cooler maintenance
The maximum permissible service life of the coolant is 3 years. Upon expiry of its service life,
the drive engine coolant must be changed.
Material For suitable coolants, please see the instructions regarding initial filling, chapter 2.7.5.
Coolant tester
Cooler cleaning agent
Receptacle
Funnel
Cleaning cloth
Precondition The machine is switched off.
The machine is standing on level ground,
the machine has cooled down.
All compressed air consumers are disconnected,
the discharge valves are open,
the machine is fully vented, the pressure gauge reads 0 bar!
WARNING
Risk of scalding from hot coolant!
Serious injuries can be caused by hot coolant.
➤ Allow the machine to cool down before opening the cooling system.
CAUTION
Risk of chemical burns from coolant containing antifreeze!
➤ Avoid eye and skin contact with coolant. In case of contact, rinse immediately with run‐
ning water.
➤ Wear protective glasses and gloves.
NOTICE
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.
➤ Open the enclosure.
10.3.1.1 Checking the coolant level
The coolant level in the drive 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.
10 Maintenance
10.3 Drive engine maintenance
No.: 9_9548 22 HCE
Operating Manual Portable Rotary Screw Compressor
MOBILAIR M27 PE
101
