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17
Timer
Location:
The timer is located in the grinder base.
Test Procedure:
1. Unplug the grinder.
2. Connect a voltmeter across contacts 1 & 2 of the
larger connector (P4) on the timer board. Plug-in
the grinder. The indication must be 120 volts ac
for 120V models and 230 volts ac for 230V mod-
els.
3. Unplug the grinder.
SERVICE (cont.)
Solenoid(s) (cont.)
If continuity is present as described, reconnect the
white/brown wires to the grinder wiring harness, and
proceed to #6.
If continuity is not present as described, replace the
solenoid.
6. Check for continuity across the terminals of the
limit thermostat.
If continuity is present as described, reconnect the
wires, and proceed to #7.
If continuity is not present as described, replace the
limit thermostat.
7. Check the solenoid for coil action when the con-
trol switch is momentarily pressed to the “START”
(lower) position and released. Plug-in the grinder.
Listen carefully in the vicinity of the solenoid for a
“clicking” sound as the coil magnet attracts and
after a period of time, repels the plunger.
8. Unplug the grinder.
If the sound is heard as described and the plunger
remains unable to move or move freely, refer to the
slide plate section.
If the sound is not heard as described, replace the
solenoid.
Removal and Replacement:
1. Remove the hopper assy from the grinder.
2. Remove the four 8-32 slotted-head screws hold-
ing the solenoid coil to the solenoid panel.
3. Feed the white/brown wires through the hole in
the solenoid mounting plate and loosely install the
new solenoid coil.
4. Look through the collector on the bottom of the
assy and adjust the slide plate travel distance when
installing the solenoid coil.
5. Push the solenoid plunger into the solenoid coil
with your hand while moving the coil forward or
backward in its mounting holes.
6. Securely tighten the mounting screws when the
slide plate appears to have no metal showing in
the front or back of the hopper hole.
7. Refer to the following illustration when reconnect-
ing the wires.
Left
Right
WHI/ORN to
Timer P4-4
RED/BLK to
Right Solenoid
RED/BLK to
Timer P4-7
WHI/YEL to
Timer P4-5
RED/BLK to
Left Solenoid
P612