Frymaster BIH52 - Manual (Page 46)

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and miscellaneous standard black metal fittings for connections. This design allows oil/shortening to
bypass the pump as it drains from the oil return lines back into the filter pan when the system is
turned off. Bypassing the pump expedites draining of the lines. The pump solenoid leads are con-
nected to Pins 7 and 9 of the upper 9-pin plug assembly.
Filter Wiring Box
The original-design 5-lead cable connecting the filter assembly to the filter wiring box has been re-
placed with a new, universal 7-lead cable to accommodate the solenoid mounted on the front mani-
fold. The two new leads have a separate connector for attachment to the solenoid. When a filter ca-
ble is ordered for either filtration system configuration (original or redesigned), the new 7-wire cable
will be sent. The two extra wires and connector will not interfere with the original filtration system
or its operation.
Verifying Solenoid Operation
Proper operation of the 24VAC manifold and pump solenoids can be verified by removing the pump
motor lead from terminal 4 of the pump motor relay in the filter wiring box and then activating the
oil return lever. Proper solenoid operation will be evidenced by an audible “click” or vibration of
both the pump solenoid and the manifold solenoid.
3.7.6 Leakage Problems
Leakage of the frypot will usually be due to improperly sealed high limit thermostats, temperature
probes, and drain fittings. When installed or replaced, each of these components must be sealed with
Loctite
® PST56765 sealant or equivalent to prevent leakage. In very rare cases, a leak may develop
along one of the welded edges of the frypot. When this occurs, the frypot must be replaced.
If the sides and/or ends of the frypot are coated with oil/shortening, the most likely cause is spillage
over the top of the frypot rather than leakage.
The clamps, which hold the drain tube sections together, may loosen over time as the tubes expand
and contract with heating and cooling during use. If the section of drain tube connected to the drain
valve is removed for whatever reason, make sure that its o-ring is in good condition and properly
fitted around the nipple of the drain section when it is reinstalled. Also, check to insure that the
drain tube runs downward from the drain along its whole length and has no low points where oil or
shortening may accumulate.
3.8 Troubleshooting Guides
The troubleshooting guides found in the pages that follow are intended to assist service technicians
in quickly isolating the probable causes of equipment malfunctions by following a logical, step-by-
step process.