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TEST PROCEDURE FOR COMPLIANCE WITH ELEVATOR
THE ROPE GRIPPER
IN ADDITION TO THE TESTS BELOW, THE CONTROL MANUFACTURER MAY
HAVE ADDITIONAL TEST RECOMMENDATIONS
1) POWER INTERRUPTION TEST
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
When the gripper is activated, the "ELEVATOR CAN RUN" contact will open and signal
the controls to interrupt power to the driving motor and machine brake.
DURING THE FOLLOWING 2 TESTS, ALLOW THE BRAKE TO STOP THE CAR
IF THE "GRIPPER" DOESN'T. When activated by either of these tests, the
"Gripper" circuits must be manually reset.
2) ASCENDING CAR OVERSPEED TEST
With an empty car, overspeed (approximately 10% over contact speed) the car in the "UP"
direction while keeping the machine brake open. The Governor overspeed switch will
activate the "ROPE GRIPPER
strikes the buffer or, at least, reduce the car speed to the speed for which the buffer is
designed. If it is impractical to overspeed the car, run the empty car up at high speed with
the machine brake held open and manually trip the Governor overspeed switch. The gripper
will cause the car to slow down and stop. The Governor can then be tested to make sure the
Governor switch opens at the correct overspeed setting.
3) UCM - UNCONTROLLED CAR MOTION TESTS
CAUTION: DO NOT ALLOW ANYONE TO ENTER
a) With the car at a floor with the doors partially open (not fully opened), open the machine
brake. (With empty car the elevator moves up, with full load the elevator moves down.)
The "ROPE GRIPPER
b) Repeat test "a)" with the doors fully open. The "ROPE GRIPPER
stop the car within 48" (1220 mm).
c) Register a call and as the car approaches the floor hold the brake open.
For all tests, as the car drifts from the floor with a partially or fully open "ROPE GRIPPER
should apply and stop the car within 1220 mm (48"). If the car does not move when the
machine brake is opened, the brake drum or disc can be turned to start the car.
SUGGESTED ADDITIONAL SOFTWARE FOR ADDED SAFETY
1. If the machine brake fails to drop when at the floor, (as indicated by the brake switch) the
"GRIPPER" can be activated. In this case the car need not leave the door zone to apply
the "GRIPPER".
2. In addition to the overspeed switch on the governor, the "GRIPPER" can apply when any
device in the system indicates overspeed, such as an encoder, tachometer and/or an
emergency terminal stopping device.
3. The "GRIPPER" can be applied when any unintended motion is detected, such as the car
moving without a signal to run, or the car moving up with a down signal and visa-versa.
SAFETY CODES
®
MUST BE TESTED TO MEET ALL REQUIRED CODES
" causing it to grip the ropes and stop the car.
®
". The gripper will stop the car before the counterweight
®
THE ELEVATOR DURING THIS TEST!!!
" should apply and stop the car within 48" (1220 mm).
®
" should apply and
®
BULLETIN 1144
Page 16 of 29
11/12/19
"
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