Elmo Rietschle CLFH 220 Mode D'emploi page 6

Suitability
The units are suitable for the use in the industrial field i.e.
the protection equipments corresponds to EN DIN 294
table 4, for people aged 14 and above.
The CLFH 220 was developed specially for use with vacuum packing
machines, where a specific chamber volume is to be periodically
evacuated. The model can however also be used for the evacuation
of a closed system or for a permanent vacuum from:
50 Hz ➝ 0,5 to 200 mbar (abs.) • 60 Hz ➝ 0,5 to 150 mbar (abs.)
When these pumps are operated permanently outside the ranges
listed above, there may be oil seepage at the exhaust port. If closed
systems are evacuated from atmospheric pressure down to a suction
pressure close to the ultimate vacuum there will be no problem with the oil
system, provided the vacuum limit is achieved within a 10 minute pump down time.
Amounts of water vapour may be handled. Water, other liquids, aggressive
or inflammable gases and vapours may not be handled.
Handling of inflammable or aggressive gases and vapours is only possible with special versions, if the safety instructions XE 2 are noted.
The ambient and suction temperatures must be between 5 and 40°C. For temperatures outside this range please contact your
supplier.
The standard versions may not be used in hazardous areas. Special versions with Ex-proof motors can be supplied.
The back pressure on the exhaust port must not exceed + 0.1 bar.
For all applications where an unplanned shut down of the vacuum pump could possibly cause harm to persons or installations, then
the corresponding safety backup system must be installed.
Handling and Setting up (pictures
Pumps that have reached operating temperature may have a surface temperature at position (Q) of more than 70°C.
WARNING! Do Not Touch.
Oil filler port (H, H ), oil sight glass (I), oil drain plug (K, K
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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 0.25 m in front of the connection cover (D) and exhaust cover (Y).
The CLFH 220 pump can only be operated reliably if it is 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 (pictures
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For operating and installation follow any relevant national standards that are in operation.
1. Vacuum connection at (A). 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) can be put into the pump at the oil filler port (H
into the oil filler port (H) until the oil level shows at the upper mark 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 (P). 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 ,
1. Initially switch the pump on for a few seconds only to check the direction of rotation against the direction arrow (O). The direction of rotation can
be checked through the visual window (O
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 correct level (see sight
glass (l)). On no account open the oil filler port (H, H
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. Lubrication (pictures
and
Check the oil level regularly depending upon the operating hours. First oil change after 500 operating hours (see oil drain plug (K, K
changes every 500 - 2000 operating hours. The oil change times should be shortened if the application is dusty. The oil capacity amounts to approx.
5 l. Only oils corresponding to DIN 51 506 group VC / VCL should be used. The viscosity must correspond to ISO-VG 100 according to DIN 51 519.
We recommend the following oil brands: BP Energol RC 100, Esso Teresso 100, Mobil DTE Oil extra heavy, Shell Corena Oil P 100 or equivalent
oils from other manufacturers.
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.
We recommend the following oil brands: BP Energol RC 100, Esso Teresso 100, Mobil DTE Oil extra heavy, Shell Corena Oil P 100 or equivalent
oils from other manufacturers.
Prematic AG, Märwilerstrasse 43, 9556 Affeltrangen www.prematic.ch
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Tel. 071 918 60 60, Mail: v-g@prematic.ch
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