Elmo Rietschle VC Serie Instructions De Service page 6

Handling and Setting up
(pictures and )
Pumps that have reached operating
temperature may have a surface tem-
perature at position (Q) of more than 70° C.
WARNING! Do Not Touch.
The filter housing (D), oil filler ports (H, H
sight glass (I), oil drain plugs (K, K
(U) and oil separator housing (T) must all be
easily accessible. The cooling air entries (E)
and the cooling air exits (F) must have a mini-
mum distance of 20 cm from any obstruction.
The discharged cooling air must not be re-
circulated. For maintenance purposes we rec-
ommend a space of 0.5 m in front of the filter
housing and oil separator.
The 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.
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
to fit anti vibration mounts. These range of vacuum pumps are almost vibration free in operation.
Installation (pictures and
For operating and installation follow any relevant national standards that are in operation.
1. The vacuum connection (A) is situated on the filter housing (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 filler port (H) of the oil separator housing,
until the oil level shows at the top level of the oil sight glass (l). The oil cooler should also be filled via the oil filler (H
oil filler ports are closed.
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 (unless a special plug connection
is fitted). Check the electrical data of the motor for compatibility with your available supply (voltage, frequency, permissible current etc.).
4. Connect the motor via 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.
5. For easier starting, and particularly if 4 or more starts per hour, we recommend the soft starter (ZAD).
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
1. Initially switch the pump on and off for a few seconds to check the direction of rotation against
the direction arrow (O).
2. Connect the suction pipe at (A).
2. Run the pump for two minutes using the correct rotation. Stop pump and top up the oil using the
oil filler port (H) to the top level (see sight glass (l)). If the oil filler port (H
up the oil using the oil filler port (H) repeat this process until the oil cooler is completely full. On
no account open either oil filler port when the pump is operating.
4. The operating range can be adjusted by turning off the adjusting bolt (X) (see picture
5. 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 (sound power),
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 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.
Q
), oil
1
), gas ballast
1
T
)
and )
U
W
) is not accessible top
1
).
O
B
Q
). After filling make sure both
1
X
Fine vacuum: 0.5 to 100 mbar (abs.) Fine vacuum: 0.5 to 100 mbar (abs.)
X
Coarse vacuum: 10 to 500 mbar (abs.) Coarse vacuum: 10 to 500 mbar (abs.)