T
1
t
1
T
2
t
2
Installation (picture
)
These compressors may not be operated without the standard pressure regulating and limiting valves fitted so that the maximum
pressure is not exceeded (see data plate).
For operating and installation follow any relevant national standards that are in operation.
1. Pressure connection at (B).
Long and/or small bore pipework should be avoided as this tends to reduce the capacity of the compressor.
2. The lubricating oil (recommended brands see under servicing) can be put into the pump at the oil filler port (H) of the oil tank, 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. 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 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 (picture
)
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 pressure pipe at (B).
3. The required pressure ranges can be adjusted by turning the pressure regulating valve (D) according to the symbols 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 compressor we recommend wearing ear protection to avoid
any damage to hearing.
2. Oil mist in the Exhaust Stream: Even with the oil sieves 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 compressor 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 maintain a compressor that is at its normal operating temperature as there is a danger from hot parts or hot lubricant.
1. Lubrication (pictures
)
Check the oil level regularly depending upon the operating hours. First oil change after 200 operating hours (see oil drain plug (K)). Further changes
every 1000 operating hours. The oil change times should be shortened if the application is dusty.
Only oils corresponding to DIN 51 506 group VB / VBL or a synthetic oil (obtainable from Rietschle) should be used. The viscosity must corre-
spond to ISO-VG 320 according to DIN 51 519.
The recommended Rietschle Oil types are: MULTI-LUBE 320 (mineral oil); SUPER-LUBE 320 (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 recommended 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 tank.
2. Oil separation (pictures
and
)
The oil separation of the compressed air is carried out by an oil separation system that needs very little maintenance. The first oil separation takes
place by blowing up the air onto an oil sieve (t
1
). The fine oil separation however, is done by blowing air onto oil sieves (t
2
) which are accessible
on the service side of the unit. We recommend that the sieves should be rinsed and cleaned in benzine or a similar fluid at least once a year and
for this purpose covers (T
1
) and (T
2
) are to be removed.
