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86 F300S/F300SQ Ultraviolet Lamp System
11. Replace the screen assembly. After replacing the screen assembly, refer to
Figure 26; hand-tighten the four M3 screws as shown until snug. Tighten them
in sequence to 0.9 N-m (8 inch-lbs.) using a torque-controlled screwdriver.
Repeat tightening the fasteners according to the sequence and torque specified.
Figure 26. RF Screen Screw Tightening Sequence (I300M)
NOTE: After installing the reflector in the irradiator, the reflector mounting
screws should be retightened (using a torque controlled screwdriver to 3.4 N-m
(30 inch-lbs.)) after a minimum of 10 minutes of operation.
I300M Irradiator Housing Removal/Replacement
The I300M irradiator enclosure is removed as described in the following procedure.
1. Disconnect the cables from J10 and J11.
2. Place the irradiator (screen down) on a clean, level surface.
3. Remove two M3 flat head screws from each side of the irradiator housing.
4. Remove four M5 truss head screws that secure the housing to the casting.
5. Remove two M5 truss head screws that secure the perforated panel to the front
of the irradiator housing.
6. Disconnect the pressure switch tubing from the perforated panel and remove the
panel.
7. Unthread the large plastic nut that secures the J10 connector to the housing and
push the connector into the housing.
8. Lift the housing straight up to remove.
9. Reverse these steps to reassemble.