Hy-Brid Lifts HB-1030, Maintenance & Troubleshooting Manual

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SECTION 6 | TROUBLE SHOOTING FLOWCHARTS
6.5 | LOWER CIRCUIT
Does machine raise/
lower?
Descent speed slow?
Will not descend?
Creeps down?
Is th
Rep
Has key switch been
turned off?
Is an E-Stop activated?
Turn key to on position.
Pull out emergency stop button at upper and
lower controls.
Is emergency down
valve open?
Close emergency down valve.
Flush down valve by simultaneously pressing
up switch at base control and down switch on
platform control for 30 sec.
Replace down valve.
Faulty down
valve?
Electr
proble
Foreign matter
lodged in up or
down valve?
Disconnect coil. Check if u
voltage at coil—should be
Check for power connect
See Hy-Brid troubleshoot
No
Are batteries fully charged
(and filled with water)?
Charge batteries.
Check for
obstructions
between any
scissors beams.
Consider filter on hydraulic tank. Check
for debris in tank obstructing flow.
Yes, but not
properly
Is enable
button
working?
Yes
Replace enable button/
contact block at upper
control.