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• To inspect the lining wear, first reopen the gripper using the manual pump.
• Once in the open position install the security set screws so they touch the rotating shaft
(preventing gripper from activating).
• Inspect Lining Groove Depth.
o If lining wear is not excessive (less than 3/16"), spacer shims (Figure 7) can be re-
located between the shaft support blocks and the moveable shoe. Remove the bolts that
hold the blocks to the movable shoe and place the lining wear spacer shims under the
blocks. Re-install and tighten bolts. Addition of the shim decreases the shoe clearance.
The rotating shaft is now toward the bottom end of the cam when gripping the ropes.
o If the grooves in the linings have worn to approximately 3/16" or greater, new linings
should be installed as soon as possible. Note: Before changing shoes or spacers,
install security set screws to prevent unintended "ROPE GRIPPER
which could lead to severe personal injury and/or damage to the unit.
• If installing new linings NOTE: Always replace linings in pairs.
o Remove both connecting arms by removing 4 snap rings.
o Remove moveable shoe assembly.
o Remove screws from each lining assembly and remove linings.
o Refer to Chart 3 for initial spacer and shim set-up. NOTE: It may be necessary to
loosen mounting bolts to tip gripper in order to allow access to stationary shoe.
o Re-locate Lining Wear spacer shim (1/8" shim) from between the shaft support blocks
and the moveable shoe to the back of the block.
o When linings have been replaced, follow the INSTALLATION OF "ROPE
®
GRIPPER
• When inspection/replacement is complete, turn the valve stem to AUTOMATIC and the
pumping unit ON. Carefully remove the security set screws. If necessary, use hand pump to
prevent rotating shaft from moving when removing the security set screws. The "ROPE
" is now ready for operation. Check to ensure that the rotating shaft is around the
®
GRIPPER
corner(s) at the bottom of the cam and the connecting arm position matches or covers the
wear-in line marked on the side wall when gripping the ropes.
During each test the "ROPE GRIPPER
•
A. Grip the Ropes,
B. Stop the car and/or prevent the car from running, and
C. Open the control safety circuits disconnecting power to the motor and machine brake.
•
The following three tests should be made while the car is running in slow speed in both the
up and down directions.
1) Turn the pump test switch OFF. Observe A, B, and C above.
2) a) With the car in the door zone and the car doors and the hoistway doors not in the
closed position (doors partially opened with the car door switch and the hoistway door
interlock opened), disconnect the door zone feed (as if leaving the door zone) and
observe A, B, and C above.
b) Repeat the same test in 2) a) with the doors fully open.
NOTE: The controller's safety circuits should require a manual reset before the "ROPE
" reopens. See IMPORTANT notes on Page 15 under sections titled OVERSPEED
®
GRIPPER
RESET and UNINTENDED MOTION RESET.
3) Manually open the governor overspeed switch and observe A, B, and C above. NOTE:
The controller's safety circuits should require a manual reset before gripper reopens.
" procedure and the LINING WEAR-IN procedure.
TESTING ALL CIRCUITS
®
" should:
" activation,
®
BULLETIN 1144
Page 12 of 29
11/12/19
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