3. Test for continuity across the terminals of the switch with the Motor Carriage in the Neu-
tral position. The switch should measure as CLOSED.
4. Pull the carriage toward the rear of the machine until it stops
against the Router Stop
Plate. The switch should now measure as OPEN.
5. If the switch does not OPEN, adjust the magnet 1/16” farther away from the switch and
repeat step 4 until the switch measures OPEN with the carriage held against the Stop
Plate. If no more adjustment can be made, flip the magnet 180 degrees to see if that
will allow the switch to open during testing.
6. If the switch continuously measures CLOSED regardless how far away the magnet is,
replace the switch and magnet.
7. If the switch measures OPEN while the Motor Carriage is in neutral position, adjust the
magnet 1/16” closer to the switch and repeat the test. Make additional adjustments
closer
until the switch measures CLOSED.
8. If the switch continuously measures OPEN regardless how close the magnet is, replace
the switch and magnet.
Note: If a dry cycle is preformed to confirm function of the switch and the router bit stays
extended, verify that the carriage plate is not hitting the front of the switch/magnet. The carriage
plate should land in between the switch and the magnet.
TSM-21 Diagnostic Manual Parker/Humphrey Solenoids
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