max.
min.
T
M
H
I
K
Q
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D
L
Q
N
Handling and Setting up
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Pumps that have reached operating temperature
may have a surface temperature at position (Q) of
over 70°C.
WARNING! Do Not Touch.
Suction fl ange (D), oil fi ller port (H), oil sight glass (I), oil drain
plugs (K), gas ballast (U) and oil separator housing (T) must
all be easily accessible. The cooling air entries (E) and the
cooling air exits (F) must be 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.
The V-VC pumps can only be operated reliably if they are
installed horizontally.
For installations that are higher than 1000 m above
sea level there will be a loss in capacity. For further
advice please contact your supplier.
Installation
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For operating and installation follow any relevant
national standards that are in operation.
1. The vacuum connection (A) is situated on the suction
fl ange (D).
The air handled can be emitted into the atmosphere through
the exhaust port (B) or by utilising an exhaust pipe.
Long and/or small bore pipework should be avoided
as this tends to reduce the capacity of the pump.
The exhaust port (B) must not be obstructed or partly
obscured.
2. The lubricating oil (for recommended brands see under servicing) must be put into the pump at the oil fi ller port (H) of the oil separator housing,
until the oil level shows at the top level of the oil sight glass (l). After fi lling, make sure the oil fi ller port is closed.
3. The electrical data can be found on the data plate (N) or the motor data plate. The motors correspond to DIN EN 60034 and have IP 54 protec-
tion and insulation class F. The connection diagram can be found in the terminal box on the motor (unless a special plug connection is fi tted).
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 fi tted with a time delayed trip resulting from running beyond the amperage setting.
When the unit is started cold, over amperage may occur for a short time.
5. For easier starting, and particularly if 10 or more starts per hour, we recommend the soft starter (ZAD).
The electrical installation may only be made by a qualifi ed electrician under the observance of EN 60204. The main switch must be
provided by the operator.
Initial Operation
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1. Initially switch the pump on (max. two seconds) to check the direction of rotation (see direction arrow (O)). When looking on the motor fan it must
rotate clockwise.
Caution – wrong direction of rotation
Operation with wrong direction of rotation causes damages on the vacuum pump!
We recommend checking the direction of rotation with a phase-sequence indicator.
2. Connect the suction pipe at (A).
We recommend fi tment of the non-return valve (ZRK) into the suction pipe. The standard built-in non return valve cannot alone be
used as seal to the closed system.
3. Run the pump for two minutes using the correct rotation. Stop pump and top up the oil using the oil fi ller port (H) to the top level (see sight
glass (l)). Repeat this process until the oil pipes are completely full.
On no account open the oil fi ller port when the pump is operating.
4. Vacuum regulating valve (optional extra):
The vacuum can be adjusted by turning the regulating valve according to the symbols as indicated on the top of the regulating valve.
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 recommend wearing ear protection to avoid any
damage to hearing.
2. Oil mist in the Exhaust Stream: Even with the high effi ciency oil mist eliminator the exhausted air could still contain extremely 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.
