Ingersoll-Rand 7700-E Series Installation, Operation And Maintenance Instructions page 31

3-Hose System
THE HOIST WILL ALWAYS CEASE OPERATION WHEN OPERATOR RELEASES THE PENDANT CONTROL. IF ANY
HOSE (AIR INLET OR PENDANT CONTROL HOSES) SHOULD BECOME CUT OR RUPTURED - 1) RELEASE PENDANT
CONTROL. 2) SHUT OFF AIR SUPPLY AND REPLACE HOSE.
TO OPERATE HOIST IF HOSE SHOULD RUPTURE, BE GUIDED BY THE FOLLOWING:
AIR INLET HOSE CUT OR RUPTURED:
TO LOWER LOAD - Load may be lowered by manually operating control arm. Pull down on control arm at "B". See
WARNING note below.
IF HOSE "W" IS CUT OR RUPTURED TO LOWER LOAD - Load may be lowered by manually operating control arm.
Pull down on control arm at "B". See WARNING note below.
IF HOSE "X" IS CUT OR RUPTURED:
TO LOWER LOAD - Load may be lowered by depressing "DOWN" lever of pendant control.
IF HOSE "Y" IS CUT OR RUPTURED:
TO LOWER LOAD - Load may be lowered by manually operating control arm. Pull down on control arm at "B". See
WARNING note below.
TO RAISE LOAD - Load may be raised by depressing "UP" lever of pendant control.
!
Exercise care when operating control arm to lower load as load will be lowered at a very fast rate.
W W A A R R N N I I N N G G
C C o o n n t t r r o o l l s s S S e e c c t t i i o o n n
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