Milnor 5050, Service Manual

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Pellerin Milnor Corporation
seals are worn. It is necessary to replace a damaged probe. The probe can also give an incor-
rect value if it has plastic contamination. It is necessary to remove the contamination.
• Temperatures are not in the correct range. The conditions described in Section 2.1 : Min
Fire (MINF), page 3 can cause water flow if they are severe enough.
If water flow occurs when there is no fire, correct the cause. Do not remove the fire safety sys-
tem from operation.
If a fire occurs, this system is your first and best protection against a fire
that is out of control.
4. How to Do a Test of the Fire Safety System
BNDGUH01.T01 0000384214 B.2 9/24/21 11:44 AM Released
1.
Prevent a new load:
Set the
Load Allowed/ Not Allowed
( / ) switch to
Not Allowed
(
) to prevent a new load.
2.
Let the dryer empty:
Let the dryer operate until it releases the load it has.
3.
Close the manual water valve:
Close the valve to prevent water flow. This valve is on the
sprinkler assembly. The assembly is usually on the side of the dryer discharge shroud.
4. Start a test of sprinkler AUTOMATIC operation:
• If there is a controller on the dryer, see “Manual Mode Menu Functions” in the reference
manual.
• If this dryer is part of a Dryer/Shuttle (Drynet™) system, do the steps listed below at the
Drynet™ controller:
a. Select Admin Logon and enter the administrator password.
b. Select (click) the display for the dryer you will do the test on.
c. Select (click)
Manual
mode.
d. Go to
Sprinkler Functions
on the right side of the screen and select (click)
Sprinkler
[Off] to release the sprinkler valve. This is a toggle. The display shows Sprinkler [On] .
5. Examine the automatic sprinkler valve.
CAUTION:
Sluggish valve operation — can interfere with fire suppression.
�
Remove any build-up of foreign matter on components.
�
Make sure components move freely.
6. Let the water flow for a short while: Open the manual valve on the sprinkler assembly.
Make sure that water flows from the rear of the dryer. Close the valve for the subsequent part
of the test.
7. Set the system again: Pull the sprinkler reset handle down fully. It must latch.
8. Start a test of sprinkler MANUAL operation: Select a dry code and run it manually.
CAUTION:
The manual water valve must be closed to prevent water flow during
this test.
Fire Safety System Operation and Maintenance
15