Service manual

NOTE: Ll, L2 and L3 terminals on contactor #l are top, middle and bottom terminals
11.
Attach 3-pin plug to power board.
service.
REPLACE HEATER (ITEM N0.34)
Tools:
Phillips Screwdriver #2; Nut Driver - 3/8" Nut Driver - 7/16”. Wrench - 9/16";
Needle Nose Pliers; Wire Cutters; Rubber Mallet; Silicone Sealant.
Procedure:
1.
DANGER:
Turn off electrical power, disconnect electrical power supply, drain
shortening and allow to cool. If unit is hardwired, CIRCUIT BREAKER MUST BE OFF.
2.
Remove the two (2) screws securing eyebrow to relay panel and save for reuse.
CAUTION:
Utilize care in preventing escutcheon from falling forward when removing
3.
4.
Remove the four (4) screws securing escutcheon to relay panel and save for reuse.
Lower
escutcheon slowly until secure in open position.
Utilizing caution, hold heater end behind
screws in step 3.
5.
Rotate insulation strap gaining access to
6.
Remove the two (2) pieces of insulation gaining
for reuse.
7.
Remove heater compression nuts and save
buckle. Remove insulation strap and save
for reuse.
access to heater compression nuts and save
for reuse.
wire location prior to removal to ensure
proper connection to new heater (See
Figure 1).
wire terminal and remove hex nut marking
WINSTON
29
LIT.6710/REV.0/9-91
FIG.1
10. Attach wires marked El, E2 and E3 on power board to Ll. L2 and L3 terminals on
contactor #l.
12. Replace the four (4) screws securing escutcheon to relay panel.
13 Replace the two (2) screws securing eyebrow to relay panel and place unit back into
respectively.