Fig. 26 Checking the coolant level
1
Coolant level
A
Maximum mark (FULL)
B
Minimum mark (LOW)
2
Coolant expansion tank
3
Coolant cooler
4
Overflow
5
Filler neck with cap
1. Check the level of coolant in the expansion tank.
When the coolant level falls below the
minimum mark
B
: Replenish the coolant.
2. Close the door.
Determine the cause for the coolant loss and rectify.
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.
Coolant quality can be determined by the following parameters:
■ Visual check
■ Measuring the concentration of the antifreeze
➤ Loosen and remove the filler cap
5
.
Performing a visual check:
The coolant should be checked for discoloration and any particles or sediments floating in it.
➤ Take a coolant sample and analyze it.
If the coolant is heavily discolored and/or contains floating particles: Change the coolant.
Measuring the concentration of the antifreeze:
An instrument (e.g. refractometer) is used to check the antifreeze concentration of the coolant.
10 Maintenance
10.4 Drive engine maintenance
No.: 902366 10 USE
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M55 PE SIGMA CONTROL SMART pV
101
