To be checked
See
chapter
Confirmed?
➤ Is the machine firmly anchored to the floor?
(Option H1)
➤ Are door interlock switches aligned and their function checked?
➤ Are all access doors closed and latched and removable panels in
place and secured?
–
Tab. 29 Installation conditions checklist
7.4 Setting the overload protection relay
Electrical diagram 13.4 gives the location of the overload protection relay.
With star-delta starting, the phase current is fed via the overload protection relay. This phase cur‐
rent is 0.58-times the rated motor current.
To prevent the overload protection relay from being triggered by voltage fluctuations, temperature
influences or component tolerances, the setting can be higher than the arithmetical phase current.
➤ Check the overload protection relay setting.
The overload protection relay shuts the machine down despite being correctly set?
➤ Contact an authorized KAESER service representative.
7.5 Pouring cooling oil into the airend
Before starting the compressor for the very first time and before re-starting after a shutdown period
of more than 3 months it is necessary to manually add a quantity of cooling oil into the airend. In
order to avoid that the cooling oil exceeds the permissible level, drain the required quantity from
the de-pressurized oil separator tank.
Chapter 10.16 provides detailed information on how to drain cooling oil from the oil separator tank.
Material 0.5 qt. cooling oil
Precondition The supply disconnecting device is switched off,
the device is locked off,
the absence of voltage has been verified.
7
Initial Start-up
7.4
Setting the overload protection relay
42
Operator Manual Screw Compressor
SM Tri-Voltage, SIGMA CONTROL 2
9_5875 33 USE
