Henny Penny Velocity Series Service Manual page 15

Menu Display
Item
(Mod-
e)
T-31 BLOCKED DRAIN
AUTO-REV RETRIES
T-32 ATO DELTA: -FULL-
T-33 ATO DELTA: -LOW-
T-34 QUICK FLTR: FILL TO
LVL PROBE - TEMP
RISE
T-35 DAILY+POL: FILL TO
LVL PROBE - TEMP
RISE
Function
not used, the control cycles the pressure solenoid on
and off. This keeps the solenoid from getting gummed
up and sticking. This cycling at the end of a cook cycle
occurs only for cook cycles which haven't just used the
pressure solenoid. Generally it is used for open fried
products being cooked in a pressure fryer.
The control gets a feedback signal from the motorized
drain valve when it is at the fully open and fully closed
positions. If the control is commanding the drain valve
to close, but it doesn't see the closed feedback signal
within a reasonable time, it presumes that maybe a
brush has been left in the open drain valve and that is
preventing the valve from closing. In response, the
control automatically opens the drain valve back up,
sounds a sequence of fast beeps, and displays Drain
Blocked for a few seconds, giving the user time to re-
move the brush. After a short delay, the control auto-
matically tries to close the drain valve again.
The auto-topoff (ATO) oil level detection system moni-
tors the temperature difference between the main
probe (just above the heating elements) and the level
probe (located at the desired oil fill level). In static, non-
cooking situations, the level probe, high in the pot, is
generally cooler than the main probe, even when the
pot is properly filled and both probes are immersed in
the oil (the oil at the top of the pot radiates a lot of its
heat, and conducts heat away, into the air).
The auto-topoff (ATO) oil level detection system moni-
tors the temperature difference between the main
probe (just above the heating elements) and the level
probe (located at the desired oil fill level). In static non-
cooking situations, the level probe high in the pot is
generally cooler than the main probe even when the
pot is properly filled and both are immersed in the oil.
When refilling the pot after a filter operation, the control
monitors the upper temperature probe (the level probe,
at the oil fill line) and looks for a temperature rise there
that indicates the oil has refilled high enough to reach
or splash on that probe.
When refilling the pot after a filter operation, the control
monitors the upper temperature probe (the level probe,
at the oil fill line) and looks for a temperature rise there
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