Milnor MWR09E5 Series General Operating And Troubleshooting page 50

Chapter 4. Testing and Troubleshooting
Extract Speed inverter signal (Output 07)—This output signals the inverter to run the motor at
extract speed. However, both the clockwise wash signal and the extract speed signal must be
present for the basket to turn. Test this output relay (K07) by checking for a signal of 24 volts
DC between pins 1 and 2 of MTA4 when the relay should be off, dropping to 0 volts when the
relay should be on.
Last Rinse Light On (Output 08)—Output K08 closes to power the Last Rinse light on the
control panel. When the output is on, a voltmeter will read the control circuit voltage between
fuse EF71B and pin 10 of MTA7. When the output is turned off, the voltage drops to 0.
In Progress Light On (Output 09)—When output relay K09 is on, the In Progress light should
be on and a voltmeter should read control circuit voltage between fuse EF71B and pin 8 of
MTA7.
In Progress Light slave (Output 10 on controller board 08BT168A_ only)—This relay
operates identically to output 09, but is usually used to verify that the machine is running a
formula before allowing the chemical supply system to stop the machine timer.
External Heat On (Output 10 on controller board 08BT168B_ only)—This relay closes when
the controller desires external heat to increase the bath temperature. The relay opens when the
configured temperature is achieved, the bath step runs to completion, or an error terminates
the wash formula.
Door Lock (Output 11)—When this output is actuated, it remains enabled for two seconds, then
turns off. While enabled, this relay powers relay CRE to lock the door.
Flush Chemical Manifold (Output 12)—When this output is on, control voltage flows between
fuse EF71B and pin 1 of MTA7. This signal tells the chemical supply system that the
chemical injection is complete and the machine desires to flush the chemical injection
manifold.
Inject Detergent (Output 13)—When this output is on, control voltage flows between fuse
EF71B and pin 7 of MTA6. This signal tells the chemical supply system that the machine
desires detergent.
Inject Bleach (Output 14)—When this output is on, control voltage flows between fuse EF71B
and pin 3 of MTA6. This signal tells the chemical supply system that the machine desires
bleach.
Inject Sour/softener (Output 15)—When this output is on, control voltage flows between fuse
EF71B and pin 1 of MTA6. This signal tells the chemical supply system that the machine
desires sour/softener or sour/starch.
Low Level Test (Output 16)—This test is designed primarily for calibrating low level pressure
switch SPLL. When this functional test is started, the drain closes and the cold water valve
opens. The water valve closes when low level is achieved, indicated on the display by input G
changing from a minus sign (–) to a plus sign (+).
Note 12: The door must be closed during this test.
High Level Test (Output 17)—This test is designed primarily for calibrating high level pressure
switch SPHL. When this functional test is started, the drain closes if it was open and the cold
water valve opens. The water valve closes when high level is achieved, indicated on the
display by input H changing from a minus sign (–) to a plus sign (+).
Note 13: The door must be closed during this test.
Basket Speed Test (Output 18)—This test runs the cylinder at each of the three available
speeds, as described below:
Note 14: The door must be closed during this test.
PELLERIN MILNOR CORPORATION