f
e
d
g
s
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Z
Y
X
O
1
/ PM6
VTE
3
6
8
10
dB(A)
50 Hz
60
63
65
62
60 Hz
61
64
66
68
kg
6,5
7,5
8,0
10,2
mm
209
224
249
264
mm
153,5
mm
151
157
157
157
Initial Operation (picture
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)
1. Initially switch the pump on and off for a few seconds to
check the direction of rotation against the direction arrow
(see motor data plate (P)).
Note: The suction pipework should not be connected. If
the pump runs backwards this could result in damaged
rotor blades.
2. Connect the suction pipe at (A).
3. Vacuum regulating valve (optional extra):
The vacuum can be adjusted by turning the regulating
valve (C) according to the symbols on the top of the regulat-
ing valve.
Potential risks for operating personnel
Noise Emission: The worst noise levels considering direc-
tion and intensity measured according to DIN 45635 part 3
(as per 3. GSGV) are shown in the table at the back. When
working permanently in the vicinity of an operating pump we recommend wearing ear protection to avoid any damage to hearing.
Maintenance and Servicing
When maintaining these units and having such situations where personnel could be hurt by moving parts or by live electrical parts
the pump must be isolated by totally disconnecting the electrical supply. It is imperative that the unit cannot be re-started during
the maintenance operation. Do not maintain a pump that is at its normal operating temperature as there is a danger from hot parts.
1. Lubrication
The VTE pumps have bearings that are greased for life. They need not be serviced.
2. Air filtration (picture
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)
The capacity of the pump could be reduced if the air inlet filters are not maintained correctly.
The filter cartridge (f) has to be cleaned monthly depending on the amount of contamination. This is achieved by blowing compressed air from
the inside of the cartridge outwards. Even if the cartridges are cleaned their separating efficiency deteriorates. We would therefore recommend
exchanging the cartridges once a year depending on operating conditions.
Changing the filter: Screw off housing cover (d). Remove filter cartridge (f) with gaskets from filter room (g). Clean or exchange filter and check
gaskets. Reassemble in reverse order.
3. Blades (picture
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)
Checking blades: The models VTE have 4 blades which have a low but permanent wear factor.
First check after 6,000 operating hours, thereafter every 1,000 operating hours. Screw off housing cover (d) from housing. Remove blades (e) for
inspection. All blades must have a minimum height (X) of larger than 10 mm (VTE 3 and VTE 6) and 12 mm (VTE 8 and VTE 10).
Blades must be changed completely.
Changing blades: if the minimum height is reached, then the whole set of rotor blades should be changed.
Before fitting new blades clean the housing and rotor slots with compressed air. Place the blades with the radius outwards (Y) such that the bevel
is in the direction of rotation (O
1
) and corresponds with the radius of the housing (Z). Replace housing cover (d) and slightly tighten the screws (s).
Start pump and check for free and smooth running blades. Then firmly tighten end cover screws (s).
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 Back pressure on the exhaust pipework is excessive.
2.
Insufficient suction capacity:
2.1 Inlet filters are obscured.
2.2 Suction pipe work is too long or too small.
2.3 Leak on the pump or on the system.
2.4 Blades are damaged.
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 Blades are worn or damaged.
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 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 fitted) is noisy. Solution: replace valve.
5.3 Blades are damaged.
1.2001
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”.
Storage: VTE 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.
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 187
➝
VTE 3 - VTE 10
Noise level (max.)
Weight
Length
Width
Height
