Champion CRN Series Instruction Manual page 9

NOTE: Threaded bowl to head connection, generously
lubricate threads with a high grade/temperate lubricant
150 °F, 66°C. (Use lubricant provided).
7. Disassemble condensate drain valve(s).
8. Rebuild drain valves using Genuine Parts. See page 18
for ordering information.
Procedure for Separator / Filter Element
Replacement 750 scfm model
The separator/filter assembly consists of: the
separator shell assembly 1, the upper shell cap 2, the
upper shell coupling and gasket 3, the upper piping
coupling and gasket 4, the element retainer plate 5,
and the separator/filter element 6.
Depressurize the unit before servicing.
Failure to do this may result in injury. The unit must be
depressurized before the couplings are removed.
a. For normal element replacement, the separator
shell assembly must be removed. Remove the
insulation from the upper shell cap.
Check to be sure the unit is depressurized.
b. Release the condensate drain line quick
disconnect fitting.
c. Remove the two bolts on the upper and lower
shell couplings (3). Remove the couplings,
exposing the gaskets.
d. Slide the upper piping gasket down and the lower
piping gasket up on to the separator shell (1).
e. Slide the separator shell assembly out.
f. Remove the element retainer plate (5).
g. Remove the separator/filter element (6) by simply
pulling and lifting them out of the element
sealing port (1a). Discard the old element.
h. Inspect the inside surfaces of the separator shell
(1), the element seal plate, and sealing port (1a).
i. Lubricate the new separator/filter element o-ring
seals according to the element package
instructions.
j. Install the new element by carefully pushing it in
to the element sealing port (1a).
k. Reinstall the element retainer plate (5).
l. Inspect the upper and lower shell cap gaskets and
apply a thin coat of lubricant to the outside and
to the sealing lips of these gaskets.
m. Slide the separator shell assembly back in.
n. Slide the gaskets into position, centering them
between the coupling grooves.
o. Replace the upper and lower shell cap couplings
(3). Tighten the bolts evenly and alternately.
Uneven tightening may cause the gaskets
to pinch and not seal! Gasket damage may result!
p. Reinstall the insulation.
q. Slowly repressurize the dryer.
r. Inspect the assembly for air leaks.
NOTE: Further disassembly is not required or
recommended for maintenance.
s. Disassemble condensate drain valve(s).
t. Rebuild drain valves using Genuine Parts. See page
18 for ordering information.
3 & 4
Bolts
750 scfm model
3
Timer Drain - Standard - I-Controller Level 2
3
Demand Drain - I-Controller Level 3 Only
3.3 Check separator daily to be sure automatic drain
is discharging.
NOTE: Units with two stage filtration have two sets of
drains.
3.4 Blow down separator weekly by pushing test
button on control panel.
3.5 Rebuild drain mechanism annually.
To facilitate service, maintenance kits are available.
See page 18.
Grooved Upper
Gasket
Shell Cap
Coupling
Half
Grooved Shell
4
2
3
5
1
6
1A
4
2
3
5
1
6
1A
9