Checking The Bearing Noise; Checking The Solenoid Valves For Capacity Control; Checking The Oil Heater; Maintenance Of The Compressor Drive Motor - GEA Grasso M-Series Operating Manual

Operating Manual | GEA Grasso M-Series
Screw Compressor Packages
10.4.4.14

Checking the bearing noise

The bearings of the drive motor and the compressor
must be checked for unusual running noise, espe-
cially in comparison to previous maintenance. Recur-
rent vibration measurements are recommended.
10.4.4.15 Checking the solenoid valves
for capacity control
See the following sections in the start-up chapter:
• "Checking the control slide adjustment"
• "Checking the control slide adjustment times"
10.4.4.16

Checking the oil heater

Check the electrical function using a clamp-on
ammeter.
Check the outer temperature of the oil separator and
compare with the temperature of the machine room
(while the screw compressor package is at a stand-
still).
10.4.4.17 Maintenance of the compres-
sor drive motor
Hint!
The compressor drive motor must be
maintained in accordance with the
"Motor documentation".
10.4.4.20

Checking the operating parameters

Hint!
The operating parameters are checked via the TouchPanel. The checking intervals recommen-
ded in the table must be observed. The project-related setting values and limits are given in
the parameter list.
Inform the manufacturer contract partner if the parameters are outside the allowable limits.
GEA Refrigeration Germany GmbH | P_261511_1 | Generated 01.04.2015
Maintenance of the compressor drive motor includes
the following activities:
–
Lubrication of the motor
Lubrication intervals and quantities according to
the "Motor documentation" or "Type plate".
– Cleaning of the motor (externally)
Select a suitable cleaning agent according to the
"Motor documentation".
10.4.4.18

Checking the start regime

See the operating manual of the compressor control
system.
10.4.4.19

Checking the safety devices

See section entitled "Checking the fault monitoring"
in the start-up chapter.
The safety devices are checked by moving to the
switching points (limiting values). For details, see
also the operating manual of the compressor control
system.
Limiting value = parameter list
Moving to the switching point is achieved by throt-
tling the pressure-side stop valve.
Cleaning, maintenance, repair
81