Grizzly H0779 - Manual (Page 7)

model h0778/h0779 electric hoist -5 -
figure 6. Controller.
test run
the model h0778/h0779 electric hoist
has a safety stop microswitch that will
automatically shut
OFF the motor before
the lift or pulley hook can be retracted into
the housing.
if the hook is allowed to retract into the
housing, the hoist will continue to pull the
cable until the cable or cable hardware
breaks, causing the load to drop and
resulting in possible property damage/
injury.
after mounting the hoist, the safety stop
microswitch must be tested before lifting
any loads.
to test run the hoist:
1. plug the electric hoist into a grounded
110V outlet.
2. grab the lift hook and pull it away from
the hoist while using the control handle
to lower the hoist cable a few feet by
pressing the switch in the down posi-
tion (
figure 6).
3. Let go of the hook and move to a safe
distance.
4. Use the control handle to fully retract
the cable.
– if the motor shuts OFF when the
cable stop compresses the spac-
ing rack (
figure 7), the safety stop
microswitch feature is working cor-
rectly and the test run is complete.
– if the motor does not shut OFF when
the cable stop compresses the spac-
ing rack, immediately release the
Up/doWn switch. this safety fea-
ture must work properly before pro-
ceeding with regular operations. Call
tech support at (570) 546-9663 for
assistance.
like all tools there is potential danger
when operating this tool. accidents
can be caused by lack of familiarity
or failure to pay attention. if normal
safety precautions are overlooked
or ignored, serious personal injury
may occur.
Cable
down
figure 7. safety stop mechanism.
Cable
Up
spacing
rack
Cable
stop