Middleby Marshall PS555, PS570, PS360, PS200, PS220, PS224 PS310 D. Mercury Contactor Replacement

SECTION 3 - SERVICING COMPONENTS
D. Mercury Contactor Replacement	Figure 84
Early PS200-series electric ovens and all PS310/360-se-
ries electric ovens use mercury contactors to activate the
heating elements. Each pole in the contactor is a separate
mercury-filled tube that is individually replaceable. This
feature ensures that the entire contactor should never have
to be replaced.
Individual part numbers for the mercury contactor compo-
nents are listed in the Part Number Reference sections on
Pages 140 and 142, respectively.
1. PS200-series mercury contactor replacement
• Remove the complete contactor from the oven.
Then, remove the terminal clamps from the
contactor tube(s) to be replaced.

Figure 85

•Locate the Tinnerman clips on the bottom side of the contactor that hold each individual contact tube in place.

•Find the break in the tube bracket located in the center. Then, using a diagonal cutter, cut the Tinnerman clip so that it may be removed.

Figure 86

•Remove the contact tube. If the coil must be re- placed, all three contactor tubes must first be re- moved.

•To replace the contactor tube(s), slide the thin end of the tube into the contactor bracket.

146