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2.4 Handling and Setting up
Filter housing (D), oil filler ports (H, H
plugs (K, K
), gas ballast (U) and oil separator housing (T) must
1
all be easily accessible. The cooling air entries (E) and the
cooling air exits (F) must have a minimum distance of 20 cm from
any obstruction. The discharged cooling air must not be re-
circulated. For maintenance purposes we recommend a space
of 0.5 m in front of the filter housing and oil separator.
The VCE and VCEH pumps can only be operated
reliably if they are installed horizontally.
When installed on a solid base, the pumps may be installed
without fixing down. If the pumps are installed on a base plate
we would recommend fitting anti vibration mounts. This range
of vacuum pumps are almost vibration free in operation.
2.5 Potential risks for operating personnel
1.Noise Emission: The worst noise levels considering direction
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 recom-
mend wearing ear protection to avoid any damage to hearing.
2.Oil mist in the Exhaust Stream: Even with the high efficiency
oil mist eliminator the exhausted air could still contain ex-
tremely low amounts of oil mist which can occasionally be
detected by smell. Permanent inhalation of these mists may
result in health problems, therefore it is extremely important to
make sure that the installation area is well ventilated.
2.6 Maintenance and Servicing
When maintaining these units and having such situa-
tions 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 work on a pump that is at its normal operating
temperature as there is a danger from hot parts or hot
lubricant.
2.6.1 Air filtration
The capacity of the pump can become reduced if the
air inlet filters are not maintained correctly.
Filters on the suction side: Mesh filter (f
amount of contamination. Cleaning can be carried out by washing out or by blowing out with
compressed air. Replace filters if contaminated completely.
The mesh filter (f
) can be dismantled by removing screws (s
1
(picture
).
Filter for Gas ballast: All pumps are equipped with a gas ballast valve (U).
VCE 15-100 / VCEH 100: The built in disc (f
depending upon the amount of contamination by blowing out with compressed air. By
removing the screw (g
) and plastic cap (h
1
Re-assemble in reverse order (picture
VCEH 160/250: The built in filter cartridge (f
amount of contamination by blowing out with compressed air. By removing the screw (g
plastic cap (h
) the filter elements can be removed for cleaning. Re-assemble in reverse order
2
(picture
).
), oil sight glass (I), oil drain
1
) must be cleaned regularly depending upon the
1
) and mesh discs (f
3
) the filter elements can be removed for cleaning.
1
).
) must be cleaned regularly depending upon the
5
- 4 -
VCE
D
VCEH
D
f
1
) on the filter housing (D)
1
) must be cleaned regularly
4
) and
2
Q
T
M
H
K
s
Q
1
f
1
h
f
1
3
f
f
4
f
g
5
2
Q
I
s
1
g
1
4
h
2
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