Elmo Rietschle V-VL 10/25/40/80/100 - Manual (Page 8)

/ PM7
ᕩ
VL 10 25 40 80 100
dB(A)
50 Hz 73 73 73 75 78
60 Hz 76 76 76 76 80
kg 42 55 70 120 130
mm 596 695 776 846 896
mm 221 240 259 336 336
mm 332 338 330 495 495
l (min./max.) 1 / 5 1 / 5 1 / 5 1,5 / 9 1,5 / 9
3.08
Noise level (max.)
Weight (max.)
Length
Width
Height
Oil capacity
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 models VL suitably rated straps must be used.
The weight of the pumps are shown in the accompanying table.
Storage: VL 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 anti-corrosion 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 108 ➝ VL 10 - VL 100
5. Coupling (picture ᕩ)
The coupling rubbers (k) are wearing parts and should be checked regularly.
When the coupling rubbers are worn, this can be detected by a knocking sound
when the vacuum pump is started.
Defective coupling rubbers can cause extensive damage and even
in some extreme cases can break the rotor shaft.
To check the coupling, stop the motor and isolate. Remove the screws (s
5
) on
the motor flange (n). Pull off the motor (m) together with the motor side
coupling half (q). If the coupling rubbers (k) are damaged, remove the
circlips (l) from the coupling bolt (r) and exchange the coupling rubbers (k).
Leave the spacer (p) in place, check the coupling bolts (r) for any wear and
replace if necessary. To replace, remove the circlip (l
1
), pull off the coupling (q
1
)
and fan (v) complete from the pumpshaft, remove the nut (w) with washer (u)
and exchange the coupling bolts.
Re-assemble in reverse order.
Trouble Shooting
1.
Motor starter cuts out 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 vacuum pump is too cold.
1.6 Oil mist separator (optional extra) is blocked or contaminated.
1.7 Back pressure on the exhaust pipework is excessive.
2.
Insufficient suction capacity:
2.1 Suction filter (optional extra) or mesh filter (f) is obscured.
2.2 Suction pipe work is too long or too small.
3.
Vacuum pump does not reach ultimate vacuum:
3.1 Check for leaks on the suction side of the pump or on the system.
3.2 The milled screw (G
1
) is not closed.
4. Vacuum pump operates at an abnormally high temperature:
4.1 Ambient or suction temperature too high.
4.2 Cooling air flow is restricted.
4.3 The viscosity of lubricant is too low.
4.4 Problem as per 1.6 and 1.7.
5.
Exhausted air contains visible oil mist:
5.1 Oil separator element in the oil mist separator (optional extra) is fitted incorrectly.
5.2 Incorrect oil brand is used.
5.3 Problem as per 1.6, 1.7, 4.1, 4.2 and 4.3.
6.
Unit emits abnormal noise:
6.1 The coupling rubbers are worn (see under “servicing”).
6.2 The pump cylinder is worn.
Solution: send your complete unit off for repair to the supplier or approved service agent.
6.3 Blades are damaged.
6.4 The viscosity of lubricant is too high.
6.5 Problem as per 1.5.