Poweramp AP SERIES AIR POWERED 4.2009 - Manual (Page 32)

30 4111-0009 — Oct 2007
Jan. 2009
TROUBLESHOOTING
Symptom Possible Cause Solution
Platform does not rise to
full height. See Platform Rises Slowly See Platform Rises Slowly
See Periodic Maintenance in the Maintenance
section.
Platform DOES rise to
full height, but lip DOES
NOT extend or extend
fully. Lip actuator spring needs
additional tension. Inspect lip actuator chain, repair or replace as
needed.
Logic block (valve) lever
cable weight too low on
cable. Adjust cable weight. See Adjust Cable Weight and
Down Speed Control in the Adjustment section.
Lip does not extend. Logic block spool valve
stuck in the up position or
valve lever binding so that
the lever will not push the
spool down. Apply penetrating oil to spool area and valve lever
pivot at top of logic block.
If necessary, disconnect the valve lever from logic
block. Move spool valve up and down until spool
valve slides freely. If the spool valve cannot be
made to slide freely, replace spool valve.
Lubricate valve lever pivot with white lithium grease.
Lip extends almost
immediately when the
RAISE button is pushed.
Platform rises after lip is
fully extended. Lip actuator spring caught
on debris or framework. Inspect lip actuator chain, clean area, insure chain is
free from interference.
Lip extends but does not
remain extended as
leveler drops. Lip latch spring needs
additional tension. See Adjustment Section: Lip Latch Spring.
•
Increase tension as needed to keep latch
engaged.
• Clean any debris from lip latch area.
• Lubricate as instructed in maintenance section.