15
9. Part Replacement Procedures And
Adjustments
9.1 Ionizer Wire(s) Replacement
Refer to Figure 14.
1. Remove damaged wire from each spring.
2. Replace spring if damaged or missing.
3. Loop one end of new wire over bottom spring.
Pull top wire loop with pliers over top spring.
4. Wire should now be taut and centered.
If replacement parts are not available, remove
broken wires and tension springs from the ionizer
section until parts are available. The unicell can be
placed in service with missing ionizer wires.
!
NOTICE
Figure 14
Ionizer Wire Installation
9.3 Indicator Light Replacement
1. Open the power pack enclosure lid cover.
2. Disconnect the red and black wires from the indicator light
which is connected to wires “9” and “2”.
3. Remove indicator light installation nut. The indicator light
located on each power pack enclosure is polarity sensitive.
For proper operation, the two wires from the indicator light
should be connected as follows, red wire connected
to “9” wire from the power pack, black wire connected to
“2” wire from the power pack. If the wires are reversed, the
indicator light will not illuminate. The power pack indicator
light circuit is DC voltage.
4. Install the replacement indicator light reversing
the procedure.
9.4 Component Access Door(s) Gasket
Replacement
Should leakage occur an adjustment of the latch paws on the
back of the door handles may solve the problem. Extreme care
should be exercised in compressing door gasket beyond the
design limits. Before adjusting for gasket deflection, check for
the following:
1. Door or cabinet damage.
2. Deformed or torn gasket.
3. Leakage from some other source. Unicell components should
be removed and replaced with great care to preserve gasket
integrity. Should damaged gasket require replacement,
contact Parker for the correct gasket material, BUNA-N (42-
0168) or EPDM (42-1503).
9.2 Door Feed-Thru Insulator(s) Replacement
1. Place system off line.
2. Open power pack enclosure lid cover.
3. Remove high voltage wire by removing #10-32 hex nut.
4. Remove insulator retaining nut.
5. Open module door and remove the long screw from the
insulator.
6. Remove the insulator from the interior of the module door.
7. Clean silicone sealant from module door surface.
8. Install replacement insulator, reversing the procedure, and
applying a thin coat of silicone sealant to base of insulator.
Parker
INLET PLENUM MODULE ODOR
MODEL
DOOR
DOOR DOOR
PSG-11, -12, -13, -14
5 FT
7 FT
12 FT
PSG-21, -22, -23, -24
9 FT
11 FT
18 FT
PSG-32, -33, -34
12 FT
16 FT
24 FT
PSG-42, -43, -44
18 FT
22 FT
36 FT
PSG-52, -53, -54
21 FT
27 FT
42 FT
