User's Manual

15
Date of Origin – 02/01/08
2 Speed Operators (Gear Reductions)
• Choose gear box mode you want to operate; direct drive or gear reduction. Drive nut
assembly without locking latch is the gear reduction side.
• Raise the locking latch to free the operator.
• Couple the socket end of the crank handle completely and securely over the hex drive nut on
the trap operator shaft.
• Rotate crank arm clockwise or counterclockwise to open trap door per instruction decal
(direction of rotation is dependent upon mode chosen). The crank handle swings in a large arc
so be sure the area is clear.
• Rotate crank arm opposite direction to close the trap door.
• Lower locking latch to lock the operator.
• Rear trap door operates opposite of front trap door.
Single Speed Trap Openers (Ratchet and Pawl)
• Couple the socket end of the crank handle completely and securely over the hex drive nut on
the trap operator shaft.
• On the front tub, rotate the crank handle slightly clockwise, this will release the pressure on the
ratchet pawl and allow you to rotate it out of the ratchet gear.
• Once the pressure on the pawl is released, rotate the pawl counterclockwise until it comes
to rest on the other side of the ratchet gear.
• Rotate the crank handle counterclockwise to open the trap door. The crank handle swings in a
large arc so be sure the area is clear.
• The door can be stopped at any point in the travel and the pawl will hold it from opening further.
• If you determine that you have opened the door too far and need to partly close the door to
meter the speed of the discharge, release and rotate the pawl back clockwise before rotating
the crank handle clockwise to close the door.
• Rear trap door operates opposite of front trap door.
TRAP DOOR OPERATION