Adjusting Foot-Pedal Time Delay; Adjusting Blade-Travel Limit Switch - Grizzly G0845P Owner's Manual

Heavy-duty 50" electric metal shear
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Adjusting Foot-Pedal
Time Delay
The Model G0845P features an adjustable time-
delay relay for foot-pedal operation. The relay sets
a delay of 0 seconds to 10 seconds before the
upper blade begins a cutting cycle after the foot
pedal is pressed down.
To adjust foot-peal time delay:
1.
DISCONNECT MACHINE FROM POWER!
2.
Open electrical box door.
3.
Turn knob on time-delay relay to adjust foot
pedal time delay (see Figure 73).
ON
OFF
Figure 73. Location of foot pedal time-delay
relay.
4.
Turn machine ON, then press foot pedal to
test setting.
5.
When complete, turn machine OFF, then
close and lock electrical control box door.
Adjusting Blade-
Travel Limit Switch
The Model G0845P uses a limit switch on the
main shaft to stop the upper blade travel at top
dead center when using the foot pedal. Adjust or
replace the limit switch if the upper blade does not
stop at top dead center.
-48-
Items Needed
Hex Wrench 4mm .............................................. 1
To adjust blade-travel limit switch:
1.
2.
3.
4.
Time-Delay
Relay
5.
6.
DISCONNECT MACHINE FROM POWER!
Remove front cover and rear cover.
Position upper blade at top dead center.
If necessary, disengage motor brake (see
Figure 53 on Page 39), then turn drive pulley
by hand to move blade to top dead center.
If cam is not in "stop" position 90° to floor as
shown in Figure 74, loosen (2) set screws,
rotate cam, then tighten set screws.
IMPORTANT: Keep limit switch wheel cen-
tered over cam when adjusting cam position.
Limit Switch
Main
Shaft &
Rotation
Wheel
Figure 74. Blade travel limit switch location.
Turn machine ON and use foot pedal to test
limit switch.
— If main shaft does stop where shown in
Figure 74, limit switch works properly.
Mark cam and shaft for future reference.
— If main shaft does not stop where shown
in Figure 74, replace limit switch and per-
form Steps 3–5 if necessary.
Replace front cover and rear cover.
Model G0845P (Mfd. Since 01/18)
Qty
ON
Set
Screws
OFF
Cam
"Stop"
Position
90° To
Floor

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