13-18-601 Page 46
Figure 5-5 – CHANGING OIL COALESCING ELEMENT
Oil Coalescing Element Service – Use the following procedures to replace or inspect the element:
1. Be sure the unit is completely off and that oil sump is depressurized.
2. Disconnect, lockout and tagout power supply to the compressor package.
3. Remove body of MPV/sump cover (1).
4. Lift the elements (2) from sump.
5. Inspect and/or replace the elements if necessary - shine a light inside each element to reveal areas
of heavy dirt, varnish deposits or breaks (ruptures) in its media. Also inspect (sealing) o-ring in
elements for damage. Before installing new or old element, apply (heavy) grease to sealing o-ring.
Oil may be wiped off by the holder and the o-ring could be damaged.
6. Inspect oil scavenge orifice (3) and strainer (4) for fouling. Replace if necessary.
7. Wipe the MPV/sump cover seal o-ring (5) clean and inspect for damage. Replace if necessary.
8. Lower elements into sump and press element down into respective holder. Do not use excessive
force as element damage may occur.
9. Carefully place MPV/sump cover and o-ring seal on sump flange. Check that centering pins (on
MPV/sump cover) have engaged each element cavity and that MPV/sump cover lays flat agains
sump flange. Install and tighten all cap screws.
10. After compressor is started and pressurized, inspect MPV/sump cover joint for leaks.
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