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Trouble Shooting:
1.
Motor starter cuts out vacuum pump:
1.1 The incoming voltage and frequency does not corresponds with the motor data plate. Solution: Adjustment of the mains voltage.
1.2 The connections on the motor terminal block or the plug (J) is incorrect.
Solution: Check connections on the motor terminal block or the plug.
1.3 Incorrect setting on the motor starter. Solution: Check the setting of 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 Back pressure on the exhaust pipework is excessive.
Solution: Check the exhaust pipework if necessary remove.
2.
Insufficient suction capacity:
2.1 Inlet filter is blocked. Solution: Clean the inlet filter if necessary exchange.
2.2 Suction pipework is too long or too small. Solution: Use bigger pipe diameter, avoid restriction.
2.3 Leak on the pump or on the system.
Solution: Check the pump and the pipework for pressure losses.
2.4 Blades are damaged. Solution: replace blades.
3.
Vacuum pump does not reach ultimate vacuum:
3.1 Check for leaks on the suction side of the pump or on the system.
Solution: Check the suction side and the pipework for pressure losses.
3.2 Blades are worn or damaged. Solution: replace blades.
4.
Vacuum pump operates at an abnormally high temperature:
4.1 Ambient or suction temperature too high.
Solution: The ambient and suction temperatures must be between 5 and 40° C.
4.2 Cooling air flow is restricted.
Solution: The cooling air entries (E) and the cooling air exits (F) must have a minimum distance of 10 cm from any obstruction
4.3 Problem as per 1.5.
5.
Unit emits abnormal noise:
5.1 The pump cylinder is worn.
Solution: send your complete unit off for repair to the supplier or approved service agent.
5.2 The regulating valve
(if existing)
5.3 Blades are damaged. Solution: replace blades.
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 VLT 15 - VLT 60 the eye bolt on the pump must be used.
The weight of the pumps are shown in the accompanying table.
Storage: VLT units must be stored in dry ambient conditions with normal humidity. We recommend for a relative humidity of over 80% that the pump
should be stored in a closed container with the appropriate "drying" chemicals.
We recommend to avoid a storage of more than one year.
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 lists:
E 280
E 280/13 ➝ VLT 15 (13)
E 280/14 ➝ VLT 15 (14)
E 280/20 ➝ VLT 10 / 15 (20)
VLT
50 Hz
Noise level
dB(A)
(max.)
60 Hz
3 ~
Weight (max.)
kg
1 ~
is noisy. Solution: replace valve.
➝ VLT 6 - VLT 60 (01) - (11)
6
10
15
25
40
62
64
65
68
72
63
65
66
70
74
16
19,3
26,8
30,7
46,7
17
20,6
27,2
31,9
47,0
d
VLT (01) - (11)
Length
mm
Length + ZRV
mm
Width
mm
Height
mm
60
VLT
75
Length
77
mm
Width
47,4
mm
Height
-
mm
- 4 -
Z
X
O
1
b
6
10
15
25
370
390
442
473
402
422
476
507
214
214
242
242
208
208
246
246
15 (13) 15 (14) 15 (15) 10 (20) 15 (20) 10 (50)
427
382
413
339
248
248
248
204
230
215
194
180
Y
40
60
545
545
593
593
274
274
272
272
404
318
231
204
195
195
5.06
/ PM7
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