90
Pellerin Milnor Corporation
have come loose causing the excursion switch to trip, the shipping restraint on the excursion
switch was not removed after installation.
2. You review the list of inputs for any inputs that may be related to this condition. The Excur-
sion input (1MTA4–11) is a likely candidate.
3. You view the Diagnostics display with Inputs selected (Section 4.7.1.1 : Digital Inputs, page
67) and you see that input 1MTA4–11 is not actuated. This input must be actuated; otherwise,
the controller senses that the excursion switch is tripped. This input is not actuated, therefore
this input is the likely reason that the machine will not extract.
4. You view the status light for this input on the input/output (I/O) board (Section 4.8.1 : Status
Lights on Boards, page 71).
• If the corresponding input status light (Section 4.8.2 : How to Determine the Position of
an Output or Input, page 72) is not illuminated, both the status light and the display show
that the input is not actuated (the status light agrees with the information on the display).
This indicates the problem is external to the controller.
• You suspect an open in the wiring between the excursion switch and the controller or a
faulty switch. Refer to the electrical schematic manual for your machine to troubleshoot
the excursion switch circuit. The schematic manual identifies connection points, wire
numbers, and electrical component part numbers. Some common causes of electrical
problems are corroded connections, a lightning strike, a chemical spill.
• If the excursion switch circuit is not faulty, you review the Section 6.1 : Out-of-balance
Detection and Balancing for Washer-extractors, page 109 and contact Milnor
®
Customer
Service/Technical Support using the contact information in Section 6.4 : How to Contact
Milnor
®
, page 117 for further assistance.
• If the status light is illuminated, the light does not agree with the information on the dis-
play. This should never occur. Consult Milnor
®
Customer Service/Technical Support us-
ing the contact information in Section 6.4 : How to Contact Milnor
®
, page 117 to further
troubleshoot the controller.
4.10.2 Example: Desired temperature is not achieved.
BNCLDT01.T02 0000248339 E.2 A.3 A.6 1/2/20 1:22 PM Released
The bath does not achieve the desired temperature on a machine not equipped with steam.
A machine not equipped with steam injection uses modulation, as explained in Section 3.4 : How
to Modulate Water Valves to Regulate Incoming Water Temperature, page 40, to achieve the pro-
grammed bath temperature. With modulation, the machine is dependent on the laundry facility to
provide sufficiently hot water to achieve the desired temperature in the time required to fill the
cylinder to the programmed level.
1. The operator reports that the wash doesn’t seem hot enough. To confirm this, you monitor the
Diagnostic display with A/D | D/A selected, as shown in Section 4.7.1.5 : Analog Channels
(A/D inputs and D/A outputs), page 69 while a formula runs. You see that the temperature
achieved remains significantly below the temperature desired when the machine stops filling.
• If the temperature achieved does not rise at all, you suspect that the hot water valve does
not open during modulation. You will test this further, in the next steps.
Troubleshooting
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