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4. INSTALLATION
A) INSTALLATION CHECKLIST
DO
✔Ensure that the dryer is correctly sized for the inlet pressure, taking into consideration pressure drops caused by
valves, pipes, filters etc. Allowance should be made for purge air loss. The dryer should be typically sized at 1
bar g (14 psi g) below nominal compressor output pressure.
✔Ensure that the dryer is correctly sized for inlet temperature and to meet the dewpoint specified e.g.
-40˚C (-40˚F) or -70˚C (-100˚F) .
✔A receiver MUST be fitted before the dryer to ensure optimum performance. (Establish the volume flowrate of
compressed air required and calculate variation in air demand to establish the size of air receiver required).
✔The pipe should predominantly remain at compressor discharge size. On multibank installations, ensure that
dryers are located in an end fed manifold arrangement, as shown below.
✔Ensure that the dryer is securely mounted on a suitably structured, flat and level floor or base which is free from
vibration. It should be secured to the base using bolts located through the slots in the mounting feet.
✔Ensure that there is sufficient space around the equipment for safety and maintenance, including space for lifting
tackle and loading.
✔Ensure minimum distance between dryer bank centres is 500mm (19.7”).
✔Check rating plate for correct supply voltage/frequency.
✔Electrical isolators should be provided in a safe and accessible place and rated correctly for the power required.
Miniature Circuit Breakers (MCB’s) MUST be used.
✔The installation should be properly ventilated to allow easy dissipation of generated heat.
✔Ensure that the correct quality, size and type of filtration equipment is fitted e.g. WS, MPF and MPH grades
before the dryer and AR grade after the dryer.
✔Noise MPR should be considered when choosing a site for the dryer.
✔Ensure that water removed by the dryer is allowed for. If the exhaust is to be piped away, ensure adequate pipe
sizes are used e.g. min 100mm (4").
✔Separate drainage should be fitted to each filter condensate drain and piped away. Ensure that any effluent is
disposed of properly, to conform with legal requirements e.g. O.S Oil/Water Separator.
