R&M Materials Handling WIRE ROPE HOISTS Service - Manual (Page 119)

R&M Materials Handling, Inc.
4501 Gateway Boulevard
Springfield, Ohio 45502
P.: (937) 328-5100
FAX: (937) 325-5319
119/130
R&M Materials Handling, Inc. reserves the right to alter or amend the above information without notice.
7 Commissioning
Before handing over the hoist, at least the inspections and adjustments listed below should be carried
out. In some cases it is appropriate to carry out a more thorough inspection. The scope of the inspection
depends on the operating range and application.
7.1 Inspections without load.
7.1.1 Inspecting the connections of electrical equipment
• Check that the connections of electrical devices comply with the wiring diagrams and meet local
requirements. In particular, check connections that affect safety and control of the hoist.
• Check the cableways for electrical wiring. Make sure that wires do not snag on structures when the
hoist and trolley are in motion.
7.1.2 Inspection of pushbutton controller and directions of rotation.
• Check that the pushbutton controller and pendant cable are in good condition. Check that the
pushbutton controller is at the correct height.
• Press the direction buttons on the pushbutton controller and check that the resultant motions occur in
the correct direction.
!
Check the resultant motion by pressing first the UP direction button even though the hook
is near the upper limit.
• If there is an error in the direction of all movements it can be corrected by changing the sequence of
two phases of the power supply. Change the phase sequence of the input power leads to the hoist.
• Check the operation of the emergency stop button.
!
Do not depress the emergency stop button unnecessarily.
7.1.3 Checking operating sound.
• Listen to the sound made when travelling and hoisting and assess whether the sound indicates an
installation error.
• Check the vibration made when travelling and hoisting by feeling the hoist with your hand.
If the hoisting motor makes a loud intermittent noise and the hoist vibrates strongly, the problem may be
in the power supply. Check and correct all phases in the power supply. If travelling motion produces a
load noise or strong vibration, the trolley is probably incorrectly installed on the track. Check the trolley is
properly mounted on the track.
!
Do not use the hoist before you have identified and eliminated the cause of excessive noise
or vibration.
7.1.4 Inspection and adjustment of the hoisting limit switch.
• Adjust the limit switch for hoisting. Check the operation of the limit switch by running the hoist to the
top and bottom limits.
Adjustment of the hoisting limit switch is described in the section “Hoisting limit switch”.