Park House Healthcare Delta Plus Service Manual page 13

T4 Replacing the air filter
Check
1. If the filter is dirty and decide if its condition will affect the performance of the
unit. The blacker the filter material, the dirtier the filter is.
Procedure
1. Remove the air filter cap from the pump enclosure.
2. Remove the air filter from the enclosure.
3. Insert new air filter unit.
4. Insert air filter sponge washer onto the air filter prior re-inserting back to
enclosure.
5.
Replace the air filter cap.
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