Timer Stop Connections - Milnor MWR09E5 Series General Operating And Troubleshooting

Chapter 1. Commissioning
Figure 4: Pump Signal Connections
Electrical Connections Enclosure
.

Timer Stop Connections

1.4.2.
This feature is not available on coin-operated machines. Timer stop is a feature of the E-P
®
OneTouch control which stops the machine timer while a certain input to the microprocessor is
grounded. When multiple machines without this feature are connected to a common chemical
supply system, the quantity of chemical injected can vary widely if two or more machines request
chemical simultaneously. When timer stop is properly wired with the chemical supply system, the
supply system stops the timers in certain linked machines when one machine requests chemical.
When the chemical injection is completed, the chemical supply system terminates the timer stop
command, and the stopped timers resume counting.
When the timer in a machine is stopped, the current formula event continues until the timer
resumes counting. If water valves are open when the timer stops, they will close when the desired
level is reached. Chemical injection signals will stop after the designated time, but the manifold
flush signal will not occur until the timer starts. All other actions (cylinder reversing, extract
speed, drain speed, etc.) that are in progress when the timer is stopped will continue until the
timer starts again and the programmed time for the current event expires.
Milnor provides two wires terminated with butt connectors in the rear console of the machine, as
shown in Figure 5. One wire originates electrically from pin 4 of MTA7 on processor board
08BT168AT, or pin 9 of MTA3 on processor board 08BT168BT. The other wire is electrically
identical to pin 6 of MTS1 on the switch panel board. For timer stop to operate, the chemical
system should include a normally open contact between these two connectors. When the contact
is open, the machine runs normally. When the contact is closed, the machine timer stops until the
contact opens again.
PELLERIN MILNOR CORPORATION
Legend
A. Detergent signal
B. Bleach signal
C. Sour and starch/softener signal
D. Manifold flush signal
E. Chemical signal common
F. Machine power connections