Milnor MWR09E5 Series General Operating And Troubleshooting page 37

Chart 3: Operating Sequence Part 3
From Chart 2.
Is machine configured
A1:
for external heat?
Is desired water
A2:
temperature achieved?
A3:
Enable heat
A4:
Run timer while heating?
A5:
Enable step timer
A6: Wait 15 seconds
Enable chemical
A7:
injection
Disable chemical
A8:
injection
A9:
Wait 15 seconds
A10:
Enable flush valve
Go to Chart 4
Go to A5
NO
YES
Go to A5
YES
NO
Go to A2
NO
YES
Chapter 4. Testing and Troubleshooting
If the desired temperature is not achieved, the controller enables the heating
system.
Chemical injections and subsequent actions are timed according to the step
timer, so these actions will not begin until the step timer starts.
For each bath step in which chemicals are programmed, the controller enables
the chemical injection signal for 30 seconds, beginning 15 seconds after the step
timer starts.
Chemical injection signals stop after 30 seconds.
This delay helps insure that the chemical pumps have stopped delivering
chemicals to the machine.
The controller flushes the chemical injection manifold with fresh water for 30
seconds to reduce the risk of machine damage from contact with undiluted
chemicals.
External heat is optional on some
machines. Improper configuration can
prevent the step timer from starting.
The controller monitors the bath
temperature thermistor throughout each
bath step, but does not stop the step timer
after the first time the desired
temperature is achieved in each step.
The machine can be configured to run or
hold the step timer while the heating
system is enabled before the desired
temperature is first achieved.
PELLERIN MILNOR CORPORATION