Henny Penny 500 Service Manual page 260

5:00 Position
10. During the cook cycle when pressure reaches the 12 psi range. Compare the
existing pressure gauge with the calibrated test gauge. The existing pressure
gauge should read in a similar range. If it is not, replace the existing pressure
gauge after the test.
11. If pressure during the cook cycle exceeds 14 psi, this does not fail the test as
long as the locking pin engagement and disengagement steps pass. However,
after the test, the deadweight and all related plumbing would need to be
thoroughly cleaned or replaced.
12. When pressure exhausts and nears the 2 psi mark, using two hands, gently turn
the spindle counterclockwise. If you are able to turn the spindle to the 5:00
position (Figure 8), this inspection fails. Take the fryer out of service until the
lid assembly can be replaced. To pass the inspection, the spindle should
remain locked at 2 psi when trying to turn counterclockwise. If the lid is locked,
the spindle should remain in the 6:00 position (Figure 7).
13. If the pressure was slow to release during the cook cycle and did not reach 0 psi
when the timer reached 0:00, this does not fail the inspection, however this is
an indication that the pressure solenoid and/or its related plumbing may be
sticking or obstructed. After the test, clean the solenoid and the related
solenoid plumbing back to the steam exhaust stack.
14. Remove the test fixture.
15. If the existing safety relief valve passed the inspection, re-install it. If not, install
a new valve with pipe thread sealant.
246
Figure 8
9. If the spindle continues to turn past
the 5:00 position (Figure 8), the
locking pin test would fail. Take the
fryer out of service until the locking
pin issue is addressed or the lid
replaced.