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Trouble Shooting
1.
Motor starter cuts out pressure/vacuum pump:
1.1 Check that the incoming voltage and frequency corresponds with the motor data plate.
1.2 Check the connections on the motor terminal block.
1.3 Incorrect setting on the motor starter.
1.4 Motor starter trips too fast.
Solution: Use a motor starter with a time delay trip (version as per IEC 947-4).
1.5 The pressure/vacuum pump is too cold.
1.6 The regulating valves are dirty causing excess pressure or vacuum.
2.
Insufficient suction or pressure capacity:
2.1 Inlet and/or exhaust filters are obscured.
2.2 Suction pipe work is too long or too small.
3.
Pressure/vacuum pump operates at an abnormally high temperature:
3.1 Ambient or suction temperature is too high.
3.2 Cooling air flow is restricted.
3.3 The viscosity of lubricant is too low.
3.4 Problem as per 1.6.
4.
Exhausted air contains visible oil mist:
4.1 Oil sieves are fitted incorrectly or are dirty.
4.2 Incorrect oil brand is used.
4.3 Problem as per 3.1, 3.2 and 3.3.
5.
Unit emits abnormal noise:
Note: A knocking noise from the rotor blades is normal when cold starting as long as it disappears within two minutes with increasing operating
temperature.
5.1 The coupling rubbers are worn (see under "servicing").
5.2 The pump cylinder is worn. Solution: send your complete unit off for repair to the supplier or approved service agent.
5.3 The regulating valve is noisy. Solution: replace valve.
5.4 Blades are damaged.
5.5 Blades are hindered through oil-coal deposits at the gliding motion in the rotor slot.
Solution: Application of synthetic lubricating oil. If noise does not disappear, overhaul the DCLF...DV through the supplier or approved service
agent.
5.6 The viscosity of lubricant is too high.
5.7 Problem as per 1.5.
6.
Water in lubricant i.e. Emulsification:
6.1 Pump pulls in water because of the application.
Solution: Fit water separators on to the vacuum side.
Appendix:
Repair on Site: For all repairs on site an electrician must disconnect the motor so that an accidental start of the unit cannot happen.
All engineers are recommended to consult the original manufacturer or one of the subsidiaries, agents or service agents. The address of the
nearest repair workshop can be obtained from the manufacturer on application.
After a repair or before re-installation follow the instructions as shown under the headings "Installation and Initial Operation".
Lifting and Transport: To lift and transport the DCLF...DV units the eye bolt on the pump must be used.
The weight of the pumps are shown in the accompanying table.
Storage: DCLF...DV units must be stored in dry ambient conditions with normal humidity. If a pump needs to be stocked for a period longer than
3 months we would recommend using an anticorrosion oil rather than the normal lubricant.
Disposal: The wearing parts (as listed in the spare parts lists) should be disposed of with due regard to health and safety regulations.
Spare parts list:
E 401
DCLF...DV
dB(A)
Noise level (max.)
Motor rating
Weight (max.)
Length
Width
Height
DCLF 40 DV - DCLF 200 DV
40
50 Hz
72
60 Hz
73
kW
1,5
2,2
kg
71
75
mm
809
853
mm
372
mm
302
60
80
74
77
75
78
2,2
3,0
3,0
90
96
100
896
8968
956
408
408
343
343
100
79
80
4,0
4,0
5,5
110
110
150
973
987
10928
439
375
130
82
83
5,5
7,5
160
180
1162
1162
439
375
2.2001
/ PM6
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