Specifications

138 Part Number STH12 9/10
NOTE: The new MPC84A does not have factory
default set times, like the MPC64A does. If a portion
size or station looses its calibration, the time(s) will go
back to minimum (.5 seconds). This means you can
check the total operation of the MPC84A by initiating
the TEST/CYCLING option, without changing the
calibration times, which could happen with the old
MPC64A.
TEST / CYCLING OPTION
1. Turn the power OFF to the tower/portion control.
2. Hold the calibrate switch ON and turn the power
ON at the same time.
3. The calibrate LED will illuminate, let OFF the
calibrate switch.
4. The dispensing valves will sequence from left to
right, valve #1 ON 4 seconds, then valve #2 ON 4
seconds etc., continuously repeating, until you
turn the power OFF, or press the calibrate button
once. This allows you to see that all valves work.
The keyboard or valve harness would have to be
at fault, if all the circuit board LEDs (LD1-LD8)
illuminate properly, and a valve or valves do not
dispense.
Secondly, this sequencing can be used to purge or
sanitize the system automatically. If you want more
than one valve at a time to dispense automatically for
4.0 seconds, just press station number for number of
valves simultaneously. That is, when in the cycling
sequence press station #2 (counting left to right) for
two valves simultaneous, meaning valve #1 and #2 will
dispense for 4 seconds, then #3 and #4, etc.,
continuously repeating until you turn the power OFF or
press the calibrate button once. If you press the station
#3, then 1 and 2 and 3 stations will dispense
simultaneously, then 4 and 5 and 6, etc. This allows
you to have as many valves purging/sanitizing, as the
drain will allow without overflowing.
RETROFITTING
When using the MPC84A as a service replacement
part, only the valve connectors have to be watched.
The power connectors and the keyboard connectors