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HOLLISTER-WHITNEY "ROPE GRIPPER™"
(Patented worldwide, other patents pending)
WARNING: KEEP HANDS CLEAR OF "ROPE GRIPPER™".
FORCES CREATED CAN CRUSH FINGERS.
"ROPE GRIPPER
•
The Mounting Channel Framework supporting the "ROPE GRIPPER™" must withstand
upward and downward forces according to Table 1 (p. 4) and applicable code requirements.
•
The Mounting Channel Framework must be sufficiently sized to securely hold the "ROPE
GRIPPER™" and elevator while preventing any sliding. The Traction Machine must also be
prevented from sliding. See Figure 2 and Figure 3 (pp. 2 – 3) for suggested mountings.
•
When adding a "ROPE GRIPPER™" to an existing installation, it may not be possible to
mount the gripper in the machine room. It is acceptable to mount the gripper horizontally or
upside down, as long as proper consideration for access is given for future gripper
maintenance.
8/15/2011
Instructions for Model #620GA1, 620GA2
Figure 1
TM
" MOUNTING CHANNELS GUIDELINES
BULLETIN 1148
Page 1 of 16
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Summary of Contents for HOLLISTER-WHITNEY ROPE GRIPPER
- Page 1 See Figure 2 and Figure 3 (pp. 2 – 3) for suggested mountings. • When adding a “ROPE GRIPPER™” to an existing installation, it may not be possible to mount the gripper in the machine room. It is acceptable to mount the gripper horizontally or upside down, as long as proper consideration for access is given for future gripper maintenance.
- Page 2 Typical Mounting Arrangement for Overhead Machines - New Installations - MACHINE BEAMS TIE-DOWN CHANNELS (3) 4X13.8 SHIP CHANNELS ARE THRU-BOLTED TO ISOLATION BEAM TIE-DOWN CHANNEL IS THRU-BOLTED TO TOP FLANGE OF MACHINE BEAMS CONCRETE SLAB MACHINE BEAMS ISOLATION BEAM IS BOLTED TO TOP FLANGE OF MACHINE BEAMS MACHINE BEAMS...
- Page 3 Typical Mounting Arrangement for Overhead Machines - Existing Installations - MACHINE BEAMS (4) 4x13.8 SHIP CHANNELS TIE-DOWN CHANNEL IS TIE-DOWN CHANNEL IS THRU-BOLTED TO TOP THRU-BOLTED TO TOP FLANGE OF CHANNEL FLANGE OF MACHINE BEAMS ATTACHED TO MACHINE BEAMS MACHINE BEAMS MACHINE BEAMS (2) 4x13.8 SHIP CHANNELS "GRIPPER"...
- Page 4 Turn test switch to OFF. This should activate the “ROPE GRIPPER™”, clamping the ropes. Be sure that while clamping the ropes, the Elevator Can Run switch (see Figure 4 on p. 5) contacts on the “ROPE GRIPPER™” stop or prevent power from being applied to the motor and machine brake.
- Page 5 SWITCH Figure 4 “ROPE GRIPPER™” LINING WEAR-IN A line has been marked on the side wall of the gripper to aid in the Wear-In process. Note that at this point in the procedure, this line is well above the Connecting Arm and will be met or covered by the Connecting Arm during the Wear-In process (see Figure 1 on p.
- Page 6 “ROPE GRIPPER™” (typically DOWN). When the car runs at that speed, turn the test switch OFF. The “ROPE GRIPPER™” will clamp the ropes with a light pressure and ropes will begin to wear grooves in the linings.
- Page 7 MOVABLE SHOE ROPE SIDE SHIMS SHAFT SUPPORT BLOCK OUTER SIDE SHIMS NOTE: PLACE OR REMOVE SPACER SHIMS HERE AS REQUIRED FOR DIFFERENT HOIST ROPE DIAMETERS OR WHEN ADJUSTING FOR LINING WEAR. SMALLER ROPES REQUIRE MORE SPACERS IN THIS POSITION. Figure 6 BULLETIN 1148 8/15/2011 Page 7 of 16...
- Page 8 Near the end of the cam, the excessive wear microswitch (see Figure 4, p. 5) will open and the “ROPE GRIPPER™” will not automatically reopen (reload).
- Page 9 “ROPE GRIPPER™” need not be activated. • It is suggested that a manual reset of the Rope Gripper require a minimum of 10 seconds of constant pressure activation, to allow the mechanic resetting the Rope Gripper to quickly react to an unsafe condition. In other words, it is recommended that the reset control act as a...
- Page 10 • It is suggested that if the elevator controller has a monitor function for the machine brake, that the rope gripper be activated immediately on sensing a stuck brake condition, rather than waiting for unintended motion to occur. •...
- Page 11 Power to the “ROPE GRIPPER™” is constantly maintained. When in the door zone DZ1 and DZ2 provide power to the “ROPE GRIPPER™”. RG1 and RG2 energize when the doors close. As the car leaves the floor DZ1 and DZ2 de-energize, power to the “ROPE GRIPPER™”...
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Page 12: Manual Opening
“ROPE GRIPPER™” is manually reset without first correcting the cause of the fault. E.g.: If there has been a brake failure that has not been corrected, when the “ROPE GRIPPER™” is reset, it is very likely that the car will fall either up or down. UNINTENDED MOTION •... - Page 13 TEST SWITCH WRENCH Figure 7 WRENCH WRENCH PIN OPEN GRIPPER DIRECTION Figure 8 (RH unit shown; LH opposite) BULLETIN 1148 8/15/2011 Page 13 of 16...
- Page 14 Run the car in slow speed and turn the toggle switch on the side of the pump unit to OFF. This will activate the “ROPE GRIPPER™” causing it to clamp the ropes and stop the car. When the “ROPE GRIPPER™” is activated, the “ELEVATOR CAN RUN” contacts will open and signal the controls to interrupt power to the driving motor and machine brake.
- Page 15 Pawl and solenoid adjustment If the Rope Gripper opens, but then repeatedly clicks or chatters, and fails to lock in the open position, the pawl may be failing to engage its gear teeth. The pawl is driven by the solenoid through the solenoid clevis, which can be adjusted.
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Page 16: Wire Rope Lubrication
Figure 9 “ROPE GRIPPER™” LUBRICATION • The Rope Gripper is shipped with a layer of a general purpose grease lubricant applied to the cam surfaces, the four movable shoe guides, and inside the gearbox, to the gears and the latching pawl.
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