Sg303 Disassembly Instructions
NOTES: Refer to Figure 3 – Downflow Plenum for blower, filter and plenum
configuration.
For Motor/Blower removal, follow steps 1-18.
For filter removal, follow steps 1-15 & 21-23.
TOOLS REQUIRED:
(1) 3/8” spin wrench, (2) 3/8” socket and drill, (3) ¾” wrench and (4) ¼”
spin wrench
DISASSEMBLY:
1.
Remove front cover.
a.
Lift out at the bottom enough to disconnect the magnehelic gauge hose.
b.
Lift out at the bottom and carefully lift up and away from the unit.
2.
Remove the thumb screws that retain the face frame to the canopy (located inside of
the front cover frame).
NOTE: lower the sash to the closed position.
3.
Drop the canopy down on its restraint cables and disconnect the limit switch wires.
4.
Disconnect the canopy wires from the circuit board on the right hand side of the
canopy.
5.
Remove cable from relay.
6.
Disconnect the restraint cables from the face of the unit and lift off the canopy at the
bottom.
7.
Remove the two retaining bolts at the top of the unit that secure the front dress panel.
8.
Loosen the four retaining bolts on the outer edges of the electrical board panel that
houses the electrical components.
9.
Disconnect the cord assembly at the top of the unit that goes up from the electrical
board assembly.
10.
Disconnect plug on left side.
11.
Lift off the whole electrical board assembly with the cord assembly attached, and
store in a safe place.
12.
Remove front dress panel.
13.
Remove the window by lifting up and out. Store in a safe place.
14.
Using a 3/8” drive socket and drill, remove eight retaining bolts from the front access
panel. Remove the center top bolt last.
15.
Loosen the track retaining bolts and remove the tracks by sliding out horizontally.
16.
Blower/motor removal - remove one bolt, lock-washer and clip at the forward edge of
the positive pressure plenum.
17.
Disconnect the motor leads by pulling apart at each connection.
18.
Remove the blower by sliding it out the front.
19.
Raise the positive pressure plenum approximately ¼” so that the filter can slide out.
20.
Remove the downflow HEPA filter by sliding out of the front.
21.
Loosen the exhaust filter plenum by adjusting the two exhaust plenum adjusting bolt
assemblies.
NOTE: pull towards you on the left-hand. retaining bolt and away from you on
the right-hand. retaining bolt.
22.
Lower the exhaust filter until it clears the front top edge of the unit.
NOTE: break the exhaust HEPA seal by lifting up gently at both front corners.
Summary of Contents for SterilGARD SG303
Page 34: ...APPENDIX...
Page 36: ...34 SG303 Ladder Schematic...
