T M 1 0 - 4 5 1 0 - 2 0 6 - 1 4
TO 40P1-6-2-1
5 - 7.
REPAIR PROCEDURES (CONT'D)
p. Master Control Box Assembly (Cont'd)
15.
To remove low water relay (14) label wires and remove eight
t e r m i n a l s c r e w s ( 1 9 ) s e c u r i n g w i r e l u g s t o t e r m i n a l s .
Remove
three screws (20) securing relay to control box and remove
r e l a y .
1 6 . T o r e m o v e m o t o r c o n t a c t o r ( l l ),
tag wires and disconnect wires
a t e a c h i n p u t ( 1 0 ) a n d o u t p u t t e r m i n a l ( 1 2 ).
Unscrew two bottom
screws (21) and loosen top screw.
Remove motor contactor.
17.
Remove contactor heater (22) by removing two screws (23) and
l i f t h e a t e r u p .
Model PBU-100, before serial
number PBU100442, and Model
HEI-100
5 - 9 4 C h a n g e 7
