Milnor MWR09E5 Series General Operating And Troubleshooting page 31

If the formula ends normally by running to completion, the In Progress light goes off when the
last step of the formula ends. If the operator terminates a formula, this light flashes (two seconds
on, then two seconds off) for 75 seconds as the coast timer counts down. After 75 seconds, hold
the Door Unlock button (
Door Unlock Button
3.2.1.5.
door latch handle, allowing the operator to open the door. To lessen the chance of injury caused
by opening the door while the basket is turning, the microprocessor controller disables this button
when a formula starts.
The Door Unlock button is disabled for 75 seconds after a formula ends, whether the formula
ended normally, was ended early by the operator, or ended because of an error.
Control Functions During Testing
3.2.2.
Do not attempt to test or troubleshoot a malfunctioning machine using only the information in
this document. For complete testing procedures, see Section 4.1. "Troubleshooting Errors".
The display kit referenced in Section 3.2.2.1 consists primarily of a vacuum fluorescent display
and a wiring harness to temporarily connect the display to the processor board for testing by
authorized, qualified technicians. This kit is available from Milnor (see Section ii. "Contacting
®
Milnor ").
Formula Selection Buttons
3.2.2.1.
Formula A button (
3.2.2.1.
1.
mode (DIP switch position 8 is on), this button stops the formula timer as long as it is held
depressed. The timer resumes running when the button is released. Hold this button to simulate
the timer stop feature. Timer stop is used by some chemical injection systems to pause a running
formula until the appropriate chemical injection is completed. This feature is described in more
detail in Section 1.4.2.
Display or Action
F:A EQ:003 CE:000
Level A1/D1 T-Run
F:A EQ:003 CE:000
Level A1/D1 T-Stop
If the machine is in testing mode (DIP switch position 8 is off and position 2 is on), this button
makes input A on the testing display and enables the next numerical output. Holding
causes the controller to turn each output on for about one half second, then off before advancing
automatically and testing the next output in the sequence.
Note 7: For safety, the controller allows only one output to be turned on at a time in testing mode.
Formula B button (
3.2.2.1.
2.
and a formula is running. In testing mode, holding the Formula B button depressed makes input
B to the microprocessor.
Display or Action
ABCDEFGH
-+------
) and turn the door latch handle to open the door.
'
—This button activates a solenoid in the door latch which unlocks the
)
—With the display kit attached and the machine in normal operation
"
Explanation
Typical display in normal operation mode before button
pressed.
Typical display in normal operation mode with button
depressed.
)
—This button is ignored if the machine is in normal operation mode
<
Explanation
Typical display in testing mode with button
Output #
00 is On
Chapter 3. Operating
is
"
held
"
depressed
"
held depressed.
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