6996 0223 96 Issue A
© Edwards Limited 2016. All rights reserved. Page 26
Edwards and the Edwards logo are trademarks of Edwards Limited.
Location:
Locate the pump horizontally on a level surface. Ensure surface must be clean, well lit, well ventilated
and capable of taking the weight of the pump. The entire length of the frame base must be supported.
Insert shim, where necessary (Do not use wood).
Anchoring to the ground is not necessary but essential if mounted on a frame or a structure that may result
in the pump moving. Always consider using anti-vibration mounts.
Ambient temperature should not exceed temperatures listed in chapter “Technical data”. All models are
intended for indoor installation. Outdoor installations will require additional weather protection. Do not
locate the unit where the hot air from other pumps or heat generating equipment may be drawn in to the
unit. Never restrict the flow of exhaust air from the pump. The hot exhaust air must be exhausted to the
outside to prevent high ambient conditions in the room. The limiting ambient conditions are 0°C to 40°C
(32°F to 104°F) and atmospheric pressure. Please consult the manufacturer, if operating outside of the
criteria.
The pump is designed to be located and operated in safe environment areas where there this is no risk of
explosion. Environmental conditions must comply with the protection class of the motor as depicted on its
name plate. Consideration must be given to the safety and welfare of personnel. Thermal insulation should
be provided to offer protection against the intense heat which can be generated around the exhaust of
the pump.
Piping connections:
Process connection, exhaust pipework and associated component must be installed in line with general
engineering practices and abide by local by-laws and regulations. Good installation practice include the
correct sizing of the process pipework to reduce a loss of performance and to prevent damage to the
pump. Ideally all pipework, filters and accessories should be fully supported to reduce physical stress on
the pump.
Vibration transmittal through the pipework must be minimized. Pipework should slope away from the pump
to reduce the risk of condensate liquid running back in the pump. The filtration equipment should be fitted
if there is a chance of particulate carry-over. 5 micron or less is ideal.
Pipework should be straight as possible with no tight bends and convoluted runs. It should be sized correctly
to reduce losses. Use the same diameter of pipe for pump process connection. Pipe runs that are
convoluted or lengthy (beyond 10 meters) need careful consideration and proper sizing.
Make sure all piping connections from the pump to the point of use are leak tight and secure. Use easy to
release and flexible connection at the point of final connection to the pump.
Process isolation valves are also essential but in the case of vacuum pump, never isolate the exhaust that
may lead to high back-pressure. Drip-leg drains or low position drain point is also good installation practice.
The exhaust silencer is fitted with a drain plug or drain tab and consideration should be given to adequately
dealing with condensate drain off.
A variety of pipe material are available for installation but they must be compatible with the process
medium. The discharge air can run up to 250 °C (482 °F), so piping should be suitable to handle this
temperature.
Note: At 2.5 bar (g) pressure, overpressure pump can generate hot air up to 250°C, the pipe must be rated
accordingly.
Leakage in the pipework and accessories is a major factor that affect the performance and efficiency of
the pump.
Regular inspection and leak testing is recommended. It is essential that the internals of the pipe is cleared
of foreign objects before starting the pump. Installation of an inlet protection gauge is good practice to
safeguard the pump.
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