Snorkel A38E-sn004500+ - Manual (Page 62)

Troubleshooting Section
5-2 A38E Work Platform
PROBLEM PROBABLE CAUSE REMEDY PROBLEM PROBABLE CAUSE REMEDY
All functions 1. Blown Electric Check fuses,
inoperable. Fuse. Replace if blown.
Electric 2. Faulty Battery Check the voltage output of
motor does Charger. battery charger. If less than
not start. 24 VDC, repair or replace.
3. Faulty Battery or After completely charging
Batteries. batteries test each battery.
Replace as required.
4. Loose or broken Check continuity of all
Battery Lead. battery and motor leads.
Replace if necessary.
5. Emergency Stop With emergency stop
Switch(es) switch in the ON position,
upper & lower check continuity across
failed open. contacts. If none, replace.
6. Connecting Plug Check connection and retry.
at Upper Control
Box loose.
7. Battery Line Check for security of
Disconnect plug connection and retry.
loose.
All functions 1. Oil level in Check hydraulic fluid level,
inoperable. Hydraulic as required.
Electric Reservoir is low.
motor starts 2. Faulty Hydraulic Check pressure and
when Pump. delivery of the hydraulic
control is pump. Replace if required.
actuated. 3. Faulty Check operation. Replace
Controller. if required.
Electric 1. Line Contactor Replace Line Contactor.
motor (LC1) contacts
continues to fused together.
run after
functions
have
ceased.
Platform will 1. Emergency
Remove and inspect the
not elevate Lowering valve valve. Replace if necessary.
or elevates leaking.
slowly. 2. Platform Observe maximum load
Overloaded. rating. (See Table 1-1).
3. Faulty Lift Valve Test Lift Solenoid, if proper
Solenoid. voltage is present and coil
(Fault code : unmagnetized - Replace
51 or 53) the Solenoid.
4. Faulty Controller Check functionality of
at upper controller. Replace the
controls. Controller if faulty.
5. Battery Voltage. Check Battery Voltage.
Charge if necessary.
Voltage must be greater
than 14V.
Booms drift 1. Emergency Remove and inspect the
down after Lowering Valve valve. Replace if necessary.
being is leaking.
elevated. 2. Leaking piston Check for leakage at
seals in Lift cylinder return line, replace
Cylinders (CYL1, the seal kit if necessary.
CYL2 &
Telescope).
3. Overcentre Valve Check for contamination
leaking and clean. Check that
internally or O-Rings are intact. Adjust
needs adjusting. or replace.
4. Platform Remove excess weight.
Overloaded.
Machine 1. The Elevating Raise the Elevating
will not Assembly is not Assembly.
slew when clear of the
Booms are wheels.
elevated. 2.Faulty Controller Test Controller for
continuity during Slew
function. Replace if
defective.
3. Faulty Slew Test Slew Solenoid, if
Solenoid. proper voltage is present
(Fault code : and coil is not magnetized
57 or 58) - Replace
4. Mechanical Inspect all slewing
Damage. components. Replace
damaged parts.
5. Slew Valve Inspect slew valve. If
stuck. spool is sticking - Replace.
6. Faulty function Replace switch.
select Switch.
Platform 1.Faulty Down Test Down Valve Coil. If
will not Valve Coil proper voltage is present
lower. (Fault code : and coil is not magnetised
52 or 54) - Replace
2.Faulty function Replace switch.
Selector Switch.
3.Faulty Controller Replace if required.
4.Down Valve Check and see if spool is
stuck. stuck. - Replace if
necessary.
Telescopic 1.Faulty Tele-Out Test Tele-out Valve Coil. If
cylinder will Valve Coil. proper voltage is present
not extend. (Fault code : and coil is not magnetised
55 or 56) - Replace.
2.Faulty function Replace switch.
Selector Switch.
3.Faulty Controller. Replace if required.
4.Tele-Out Valve Check and see if spool is
stuck. stuck. - Replace if
necessary.
5.Platform is Reduce the load
overloaded.
Machine 1. Fuses blown. Check fuses and replace if
will not necessary
drive.
2. Loose electrical Check all electrical
connection on connections relating to the
drive motor or drive system for security.
motor control
units.
3. Brakes engaged Check that coil of V2 is
Brake solenoid energised when drive is
V2 ( CT12 ) has selected. Remove
become cartridge and check for
de-energised or contamination and freedom
the spool is of movement of the
stuck in the open spool. Replace if
position.
necessary.
4. Brakes engaged Check that the coil of V1
Brake solenoid is energised for
V1 ( CT11 ) is not approximately 4 seconds,
energising to
by a delay module, when
5.1