Elmo Rietschle VC 200 - Manual (Page 6)

W
M H
I K K
1
Q Q T
ᕢ
U
ᕣ
X
X
N Handling and Setting up (pictures ᕡ and ᕢ)
Pumps that have reached operating temperature may have
a surface temperature at position (Q) of more than 70°C.
WARNING! Do Not Touch.
Filter housing (D), oil filler ports (H), oil sight glass (I), oil drain plugs (K,
K
1
), 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
have a minimum distance of 20 cm from any obstruction. The dis-
charged cooling air must not be re-circulated. For maintenance pur-
poses we recommend 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 fitting anti vibration mounts. This range of vacuum pumps
are almost vibration free in operation.
Installation (pictures ᕡ and ᕢ)
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). After filling, make sure the oil filler 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/VDE 0530 and have IP 54
protection and insulation class 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 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 ᕡ and ᕢ)
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).
3. 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)). Repeat this process until the oil cooler is
completely full.
On no account open the oil filler port when the pump is operating.
4. The operating range can be adjusted by turning off the adjusting bolt (X) (see picture ᕣ)
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 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 inhalation of these mists may result in health problems, therefore it is extremely
important to make sure that the installation area is well ventilated.
Coarse vacuum: 10 to 500 mbar (abs.)
Fine vacuum: 0.5 to 100 mbar (abs.)