Symptom
Cause
Remedy
Seat bounces on descent. Air in cylinder
Purge air out by running
the lift up and down
several times. See
operating label.
Air in cylinder every day.
Air entering the hose of
cylinder if seat is left in
the up position and the
water is shut off.
Purge air out by runing
the lift up and down two
or three times. See
operating label.
Lift rises slower than
normal or lacks sufficient
power to lift properly.
Low water pressure,
heavier than usual person
on lift, leaking hose, dirt
particles in valve, lift kept
under high pressure for
extended periods of time.
Fluctuations in city water
pressure are not unusual,
replace defective hose,
clean valve, turn off the
water and lower lift
slightly each night.
Water squirts out of top of
cylinder.
Large amounts of water
are getting past the seal.
Often this corrects itself.
If not, clean or replace the
seal.
White, grey or brown
chalky deposits on out-
side surfaces of the lift.
High pH, high alkalinity,
high calcium content
(hard) water.
Clean unit with soft cloth
or Scotchbrite® pad, apply
car wax to protect finish.
Corrosion of metal parts.
Low pH, low alkalinity,
high acidity, low calcium
content (soft) water.
Clean unit with soft cloth
or Scotchbrite® pad, apply
car wax to protect finish.
Water leakage from top of
valve.
Seal around valve stem is
defective or stem is loose.
Tighten valve stem
mounting screw or
replace valve.
Electrolysis.
Improper grounding of
unit.
Add a ground to the unit.
Chair doesn’t come up
or go down when valve
handle is turned.
Broken valve stem which
allows the handle to spin
without making contact,
defective valve
Replace valve stem or
valve.
TROUBLESHOOTING
13