Gardner Denver RNC Series Instruction Manual page 17

f. Loosen the screws [2] of the filter housing. Caution
is necessary as the system may still be under slight
residual pressure.
g. Remove all screws except one and swing flange [3]
to the side.
h. Pull out the old cartridges [4].
i. Push new cartridges on to the mounting posts in the
bottom of the separator vessel.
NOTE: Do not touch the foam sleeves of the
cartridges with your fingers.
j. Close housing in reverse order.
k. Put on insulation.
l. Switch on the dryer.
m. Repressurize the dryer by slowly opening the
compressed air inlet valve.
n. Slowly open the compressed air outlet valve.
o. Slowly close the compressed air bypass valve (if
equipped).
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