Upright SL26SL Service Manual page 53

Troubleshooting
0.3 T
ROUBLESHOOTING
T R OUB LE P R OB AB LE C AUS E
All functions
1. F aulty battery
inoperable,
engine does
2. Loose or broken
not start.
battery lead.
3. E mergency S top
switch(es) failed open.
E ngine does 1. Oil level in hydraulic
start but no
reservoir is low.
hydraulic power.
2. F aulty hydraulic
pump.
1. E mergency
E ngine does
Lowering valve
start, have
open.
hydraulic power
but no electrical
function.
2. P latform
overloaded, alarm sounds.
3. F aulty controller at
upper controls.
4. B attery level low.
P latform drifts 1. E mergency
down after being
lowering valve
elevated
open.
2. Leaking piston
seals in lift
cylinders
G
UIDE
After completely charging batteries, test each battery. R eplace as
C heck continuity of all battery and motor leads. R eplace if necessary.
With emergency stop switch in the ON position, check continuity
C heck hydraulic fluid level, top off as required.
C heck pressure and delivery of the hydraulic oil. R eplace if necessary
C lose emergency
down valve.
Observe maximum load rating. (see Operation section of this manual)
C heck functionality of controller. R eplace if faulty.
C heck B attery V oltage. C harge if necessary.
E nsure that emergency lowering valve is completely closed. R eplace
if necessary.
C heck for leakage at cylinder return line, replace seals if necessary.
SL26/30SL Service & Parts
0.3 - Troubleshooting Guide
R E ME DY
Page 4-3