Frymaster H55 Series Technical Reference Manual page 21

Before Replacing a Frypot
A frypot should be closely examined before removing it for
leaking. The problem may be the seal of a probe or high-limit.
Probe replacement missteps lead to future leaks. The port for a
high-limit or probe should be thoroughly cleaned before install-
ing the new component. Residue left in the threads of a port can
cause the component to seat poorly, leading to leaks.
A port is shown clogged
with oil (above). Resi-
due left from inadequate
cleaning will cause a
poor seal on a new com-
ponent.
When installing a frypot:
Apply only steady even pressure when aligning drain nipples. Do not jerk on extensions used to
align drains.
 Nuts on frypot studs should be snug, not over tightened.
One turn past hand-tight is suffi cient torque.
Replacement Frypot Inspection
Like production frypots, service frypots are inspected for
weld integrity and leaks. However, the service pots are not
connected to a gas supply and tested for combustion leaks.
Perform these steps after installing a replacement frypot or
anytime the combustion chamber insulation is disturbed:
1. Fill the frypot with oil and turn the fryer on. Turn off or
bypass the melt cycle. Run the burner for 10 minutes.
2. Inspect the burner fl ame. The color and intensity should
be equal on both sides.
3. Use an inspection mirror to check for leaks, which will
appear as fog on the mirror surface. This type of leak is
not detectable with a visual check.
4. If a leak is detected, tighten all the lower insulation
retainer nuts, allow the fryer to run for fi ve additional
minutes and repeat steps two and three until the leak is
eliminated.
High-Effi ciency Gas
Cleaning the port and clearing the
threads with a tap (1/2-14 NPT PN
810-3146) (above) ensures a good
seal for the new component.
2-16
A trail of caramelized oil is vis-
ible here, leaking from a ser-
vice pot plug.
Inspect the burner seal with a mirror.