Gardner Denver Reavell 5236, Operating & Maintenance Manual

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Maximum allowable ambient cooling air temperature for radiator cooled sets is dependant on many
variables eg, pressure, speed and type of oil. Contact Gardner Denver Works to ascertain allowable
temperature for operating conditions.
3.3 MOUNTING
Under normal circumstances a special foundation is unnecessary but verification must be obtained
that the support floor is structurally adequate as well as flat and level. If installed adjacent to vibrating
machinery it may be necessary to bolt down the isolation pads but when tightening, ensure the
isolation pads are not distorted. If bedplate mounted, ensure floor is level and even surfaced, to
prevent distortion.
3.4 CONNECTIONS, PIPEWORK AND FITTINGS
Full consideration must be given to system and pipework layout. Check piping and connections are
suitable for pressures and capacities and if the compressor is flexibly mounted, adjacent pipework
must also be flexible.
Pipework adjoining the compressor should consist of short flexible sections to facilitate maintenance
removal of pipework and absorb any vibration.
It is essential that all pipework is made and installed so that it is not constrained or distorted when
connected to the compressor. Where ever possible use 90° bends with 8" (0.2m) radius, not elbows.
This should provide the discharge pipework with the necessary flexibility to allow for thermal
expansion.
Before completing pipework assembly, ensure all port protection plugs and blanks are removed and
suction pipe sections are clear of jointing compound, scale, swarf, dirt or other foreign substance. The
system must be suitably braced to prevent vibration and coupling strain on the compressor. Flexible
suction piping should be suitable to withstand suction collapse.
If suction is from a gas main, prevent transfer of liquid from the main to the compressor pipe by
connecting the latter to the top of the main pipe.
Separators and drain traps of adequate capacity should be fitted in an easily accessible low section of
the pipework system to prevent condensate or oil carry-over build up. These must be drained
regularly.
The delivery line should incorporate non-return valves, especially for large capacity systems or where
two or more compressors are linked to a common main.
Unloading and control gear piping must be as short as possible.
Gardner Denver Ltd compressors incorporate safety valves at all stages as standard equipment to
protect the compressor. They will NOT give protection to downstream piping or equipment. Separate
safety valves should be fitted for these areas.
3.5 DRIVE RECOMMENDATIONS
Details of drive arrangements and anti-vibration pad mountings are available from Gardner Denver UK
Ltd. An overload device must always be fitted to motors.
Manufacturers terminal box wiring instructions must be observed.
It is recommended that for efficient maintenance scheduling an hours run meter be incorporated on
the diesel engine or fitted to the motor starter.
3.6 COOLING
Satisfactory compressor operation depends on correct cooling, which requires positive circulation of
cool, clean water, free from suspended particles.
Check water is flowing in mains installations or, if closed circuit, that radiator is full.