Vestil AIR-2000 - Manual (Page 7)

rev. 1/25/2013 AIR-2000-AIR, manual.doc
Copyright 2013 Vestil Manufacturing Corp. Page 7 of 10
6. Platform rises very slowly a. Change pump speed
b. Intake filter is clogged
c. Foreign material stuck under the
pressure relief valve or under the
inlet check valve
a. Slide locking collar forward
b. Lower platform – drain reservoir,
clean & flush debris, refill with
clean oil.
c. Lower platform – disassemble,
clean & reassemble pressure
relief
7. Under load, pump pedal
feels spongy or jerky
a. Foreign material interfering with
rollers--stuck under the platform or
in the frame.
b. Oil is low
c. Air in the hydraulic system
a. Clear / correct as necessary
b. Fill oil to within one inch of the
top of the reservoir
c. Bleed air from system
8. Platform lowers too slowly a. Pinched hose
b. Intake filter is clogged.
c. Foreign material lodged in velocity
fuse
d. Foreign material lodged in the
pressure compensated flow
control valve
a. Correct as necessary
b. Lower platform – drain reservoir,
clean & flush debris, refill with
clean oil.
c. Lower platform – disassemble,
clean & reassemble
d. Lower platform – disassemble,
clean & reassemble
9. Platform lowers too fast a. Pinched hose a. Lower deck – disassemble,
clean & reassemble
10. Platform rises but does not
lower
a. Foreign material lodged in
pressure compensated flow
control value
b. Release pin bent or missing
c. Foreign objects blocking roller
travel
d. Velocity fuse is locked.
a. Lower deck – disassemble clean
& reassemble
b. Replace as necessary
c. Correct / remove as necessary
d. Remove air from the hydraulic
system to unlock & repressurize
the system.