Robuschi ROBOX SCREW Series, Operating And Maintenance Instructions Manual

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9 TROUBLESHOOTING
Operating problems List of causes
The motor does not start up and there is no noise 1-3-4-29-30
The motor does not start up, but humming noise heard
2-3-4-5-6-7
Automatic switch cut off just after start up
3-4-5-6-7-9-14-15-16-17-18
The fan does not start
29
Unusual noises and/or vibrations
WARNING : STOP ROBOX IMMEDIATELY
5-6-7-9-28-29
Intlet pressure different from the rated value
WARNING : STOP ROBOX SCREW IMMEDIATELY
8-14-15-17
Capacity zero
WARNING : STOP ROBOX SCREW IMMEDIATELY
8-14-15-17-19-20
Outlet pressure different from the rated value
WARNING : STOP ROBOX SCREW IMMEDIATELY
8-14-15-16-17-18-19-20
Outlet temperature different from the rated value
WARNING : STOP ROBOX SCREW IMMEDIATELY
8-14-15-16-17-18-19-20
Absorbed power too high
3-4-5-6-7-9-14-15-16-17-18-19-20
Oil pressure too low
13-20-24
Oil pressure too high
20-23
Oil temperature too high
8-14-15-16-17-18-19-20-22-25
Oil leakage
10-11-12-13-22-26
Oil in conveyed gas
10-22
Relief valve opens 16-17-18
Pos Cause Solution Rif.
1 At least two electric connections have been cut off Check fuses, terminal boards cables, if required replace them
Plant
2 One electric connection has been cut off See point 1
3 Faulty electric main panel Check electric panel
4 Faulty motor Check the electric motor
5 Rotors making contact
Compressor general revision
contact ROBUSCHI or an authorized dealer
-
6 Scale deposits in the compression chamber
7 Intake of foreign particles
8 Rotors are worn
9 Bearing are worn
10 Oil seal are worn
11 Drive shaft seal is worn
Replace the seal
12 Oil level plugs are broken
Replace the oil levels plugs
13 Faulty oil pump Replace the oil pump 8.5
14 Suction filter clogged Replace the suction filter 8.4
15 Suction piping (/C only) clogged
Check piping and remove obstruction
Plant
16 Discharge piping clogged
17 Shut-off valve closed Open the valve
18 Small pipe line
Increase it
19 V-belts drive is sliding
Check belts tension 8.6
Change the V-belt transmission
contact ROBUSCHI or an authorized dealer
-
20 Wrong transmission ratio
21 Wrong direction of rotation
Correct it
7.2
22 High oil level Correct it 8.2.2
23 Oil filter clogged Replace it 8.2.3
24 Oil piping damaged Replace it
25 Air / Oil heat exchanger clogged
Clean
8.2.4
26 Oil demister clogged Clean
27 Motor securing
Fix it
28 ROBOX SCREW securing Fix it on the ground 6.1
29 Wrong wiring of the rear ancillary panel Correct it 6.5
30 Emergency system not resetted Reset it 7.2