Bil-Jax ESP 19, Manual

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TROUBLESHOOTING
Table 4-3. Troubleshooting Chart
Problem Cause Correction
1. Lift vehicle controls do
not work at upper or
lower control box.
a. Master power switch turned off.
b. Low battery power or faulty battery
circuit.
c. Emergency stop button engaged
(pushed in).
d. Battery ground or in-series battery
cable loose.
e. Circuit breaker tripped.
f. Battery cable or equipment ground
lead loose or corroded.
a. Turn on master power switch.
b. Recharge batteries per paragraph
4-4. Check for faulty battery or
cables if red battery charger LED
is lit.
c. Rotate emergency stop buttons
clockwise to disengage.
d. Check for and repair loose battery
connections or ground fault.
e. Reset breaker. If breaker trips
again, locate and correct short to
ground in power circuit wiring.
f. Clean and reconnect loose or
corroded battery cable or ground
lead.
2. Lift vehicle controls do
not work at upper
control box, but do work
at lower control box.
a. Emergency stop button engaged
(pushed in) on upper control box.
b. Upper control box cable connectors
unplugged.
c. Upper control box cable connectors
plugged into wrong receptacles.
d. Enable pushbutton switch or wiring
faulty.
a. Rotate emergency stop buttons
clockwise to disengage.
b. Plug in cable connectors at front of
upper control box.
c. Plug in cable connectors in
opposite receptacles at upper
control box.
d. Repair wire break or replace faulty
switch.
3. When
UP
function is
selected, pump motor
runs but will not raise
the platform.
a. Hydraulic oil level low in reservoir.
b. More than 450 lbs. on lift platform.
c. Emergency lowering valve open.
d. Up valve solenoid or solenoid wiring
faulty.
e. Down valve sticking open or leaking.
f.
UP switch or UP switch wiring faulty.
g. Mast sections dirty; slide blocks
binding.
h. Internal leakage in hydraulic cylinder.
a. Check reservoir level. If low, check
for oil system leakage. Refill
reservoir and bleed air from
hydraulic system per instructions
in paragraph 4-3.
b. Ensure load is 450 lbs. or less.
c. Close emergency lowering valve.
d. Check voltage at up valve
solenoid. If no voltage, check
wiring. If voltage, exchange
solenoids and recheck function;
replace solenoid if faulty.
e. Repair or replace down valve.
f.
Check for lighted UP LED when
up switch is engaged. If LED does
not light, signal is not reaching
main controller; repair wire break
or replace faulty switch.
g. Clean and lubricate masts with dry
silicone. If needed, adjust slide
bocks per paragraph 4-5.
h. Check cylinder housing for heat
buildup due to leakage. If leakage
is indicated, repair or replace
hydraulic cylinder.