GEDA PH 650 - Motor Is Not Producing Full Output; Lifting Platform Moved too High

GEDA
®
Temporary Construction Hoist PH 650
Operating Manual Page 59 of 64 BL148GB2017 / 11
Fault
Cause
Remedial action
Door to the base
enclosure / car
does not open
Car is not exactly at the ground
station
Switch / door lock defective
Move car until it is in front of
the landing door
Door EMERGENCY unlock.
Replace defective lock / switch
Car does not stop
at the landing.
(Stop Next Landing)
Error detecting the landing
approach bar
Faulty sensor or distance to
the approach bar too large
Use the button (3) carry out a
reference run to the ground
station (refer to Chapter
12.3)
Check/adjust sensor and
replace if necessary
Hoist is moving in
reduced speed
Deficiency of grease in the
lubrication device (more than 4
operating hours)
Check / Change grease
cartridge
13.2.1 Motor is not producing full output
Voltage drop of more than 10 % of the rated voltage.
Select a supply cable with a greater cross-section.
The integrated thermoswitch switches off the frequency converter when
overloaded. Work can continue after a certain cool-down period (possibly
reduce load).

Refrain from repeated overheating/overloading. - Otherwise the
service life of the motor/brakes will be shortened.
13.2.2 Lifting platform moved too high
The car emergency limit switch can reach the upper EMERGENCY limit
switch bar if
o the sensing device is defective;
o there is a fault in the electrical system.
Action:
• Operate motor brake using the release lever (refer to Chapter 11.11)