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f
5
g
2
h
2
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f
4
f
4
h
1
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f
3
g
1
t
D
Y
L
f
1
s
1
3. The electrical data can be found on the data plate (N) or the motor data plate.
The motors correspond to DIN/VDE 0530 and have IP 54 protection and
insulation class B or F. The connection diagram can be found in the terminal box
on the motor. Check the electrical data of the motor for compatibility with your
available supply (voltage, frequency, permissible current etc.).
4. Connect the motor via a motor starter. It is advisable to use thermal overload
motor starters to protect the motor and wiring. All cabling used on starters
should be secured with good quality cable clamps.
We recommend that motor starters should be used that are fitted with a time
delayed trip resulting from running beyond the amperage setting. When the unit
is started cold, overamperage may occur for a short time.
The electrical installation may only be made by a qualified electrician
under the observance of EN 60204. The main switch must be provided
by the operator.
Initial Operation (pictures
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and
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)
1. Initially switch the pump on for a few seconds only to check the direction of
rotation against the direction arrow (O).
2. Run the pump for two minutes with correct rotation. Stop pump and top up the
oil utilising the oil filler port (H) to the correct level (see sight glass (l)). On no
account open the oil filler port when the pump is operating.
3. Connect the suction pipe at (A).
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 on 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.
2. Oil mist in the Exhaust Stream: Even with the high efficiency oil mist eliminator
the exhausted air could still contain extremely low amounts of oil mist which can
occasionally be detected by smell. Permanent breathing of these mists may
result in health problems, therefore it is extremely important to make sure that
the installation area is well ventilated.
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 work a pump that is at its normal operating temperature as there is a danger from hot parts or hot lubricant.
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
1
) must be cleaned regularly depending upon the 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
1
) can be dismantled by removing screws (s
1
) on the connection cover (D) (picture
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).
Filter for Gas ballast: All pumps are equipped with a gas ballast valve (U).
VCH 100 / 140: The built in
disc (f
3
) and mesh discs (f
4
)
must be cleaned regularly depending upon the
amount of contamination by blowing out with compressed air. By removing the screw (g
1
) and plastic
cap (h
1
) the filter elements can be removed for cleaning. Re-assemble in reverse order (picture
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).
VCH 180 / 250: The built in filter cartridge
(f
5
)
must be cleaned regularly depending upon the amount of
contamination by blowing out with compressed air. By removing the screw (g
2
) and plastic cap (h
2
) the filter
elements can be removed for cleaning. Re-assemble in reverse order (picture
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).
2. Lubrication (pictures
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and
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)
Check the oil level regularly depending upon the operating hours. First oil change after 500 operating hours
(see oil drain plug (K)). Further changes every 500 - 2000 operating hours. The oil change times should be
shortened if the application is dusty. Drain the oil also from the oil cooler (R) (see oil drain plug (K
1
)).
Only oils corresponding to DIN 51 506 group VC /VCL or a synthetic oil (obtainable from Rietschle) should
be used. The viscosity must correspond to ISO-VG 100 according to DIN 51519.
The recommended Rietschle Oil types are: MULTI-LUBE 100 (mineral oil); SUPER-LUBE 100 (synthetic
oil) (see oil type plate (M)).
When the oil is under a high thermal load, e.g. ambient or suction temperatures over 30°C, unfavourable
cooling or operating with increased speed etc., the oil change time can be extended by using the recom-
mended synthetic oil.
Old and used oil must be disposed of corresponding with the relevant health, safety and
environmental laws.
If the oil brand is changed, the old oil must be drained completely from the oil separator housing
and the oil cooler.
3. Oil separation (picture
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)
Extremely blocked filter elements will result in an increased pump temperature and will cause
discolouration of the lubricant.
The oil separator elements may become contaminated after a long period of operation which can result
in high pump temperature and motor overload. We therefore recommend that the the filter elements (L)
be changed every 2000 operating hours. It is not possible to clean these elements.
To change filters: Remove oil separator cover (Y). Remove plastic fixings (t) and exchange the
elements (L). If possible re-use the o-ring for re-assembly.
Re-assemble in reverse order.
