LNW-4
LNW 4 Manual Version 6.5 effective 1 Febuary 2007
Trouble Shooting
Malfunction
Probable Cause
Corrective Action
Indicator does not
Display numbers
Power leads reversed.
Power not connected.
Defective Indicator
Blown WIVR
Connect White to Positive,
Connect Black to Negative
Connect per instructions
Replace Indicator or plug
Replace WIVR, add power
filter if needed.
Indicator readings do
not change
Transducer connected to wrong
side of valve
Hydraulic Hose obstruction
Loose hydraulic connection
Reconnect to output of valve
Repair or Replace hose
Tighten couplings
Inconsistent weight
Inconsistent weighing procedure
Inconsistent Zero setting
Leaking Hoist cylinder
Air in hydraulic system
Mast not upright
Hoist cylinder fluid low
Mast slides dirty
Mechanical system worn/bent
Friction in cylinder, rollers,
slides, etc.
Follow recommended method
Follow proper procedure
Repair
Bleed system
Weigh & Zero w/Mast upright
Add proper amount of fluid
Clean & lubricate
Repair as required
Lubricate mastparts & be
sure load on forks is against
the carriage
Clean or replace plugs; check
wiring & replace if needed;
clean noisy contacts, etc.
Display numbers jump
up & down erratically or
hash is displayed
Electrical interference caused
by: Bad ignition system, rotating
light, etc.
Tighten screws & or replace
gasket
Moisture on inside of
lens
Check cover gasket & screws
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