Pro H50/55-Series Gas Fryers Service and Parts Manual - Frymaster

1.6.7 Replacing a Gas Valve
DANGER
Drain the frypot or remove the handle from the drain valve before proceeding further.
1. Disconnect the fryer from the electrical and gas supplies.
2. Disconnect the drain safety and high-limit thermostat wires from the gas valve. Mark each wire
to facilitate reconnection.
3. Remove the vent tube (on non-CE fryers) and the enrichment tube fitting from the valve.
Disconnect the flexible gas line(s).
If replacing the left-most valve on any configuration, or the right valve on a two-fryer battery,
follow the instructions below. If replacing valves in other positions, skip to “ALL OTHER
VALVES.”
A. Remove the filter pan from the unit. Remove the door adjacent to the valve being replaced.
B. Remove the five screws on the front face of the pan rail assembly adjacent to the valve being
replaced. Remove the nut and bolt securing the rear end of the rail to the cabinet.
C. Remove the two nuts and bolts immediately behind the front face of the pan rail assembly. Pull
the assembly from the unit to gain access to the pipe union on the gas line.
D. Uncouple the pipe union and remove the gas valve and associated piping from the unit.
E. Remove the fittings and associated piping from the failed valve and install them on the
replacement valve using Loctite ® PST56765 or equivalent pipe thread sealant.
F. Reconnect the gas valve assembly to the fryer using Loctite ® PST56765 or equivalent pipe
thread sealant, and reattach the flexible gas line(s), enrichment tube(s), and the vent tube (on
non-CE units). Reconnect the high-limit thermostat wires and drain safety wires to the valve.
G. Reconnect the fryer to the gas supply and open the cut off valve. Apply a solution of soapy
water around each connection to check for gas leaks. Eliminate any that are found.
H. Position the pan rail assembly beneath the fryer and rest the rear end of the rail on the cabinet
frame. Install the two nuts and bolts behind the front face of the rail, but do not tighten them.
Install the nut and bolt at the rear end of the filter rail and tighten securely.
I. Install the five screws in the front face of the rail, but do not tighten them. Install the filter pan
in the unit to make sure that all components are properly aligned; then, securely tighten the
remaining bolts and screws.
J. Reconnect the fryer to the electrical power supply and check for proper operation. When proper
operation has been verified, reinstall the door removed in Step A.
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