MAN.161 Rev.7 ENG - Use and maintenance manual S15 page
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9 Troubleshooting
Any operation requiring interventions on the components of the
machine, shall be carried out by authorized and trained staff.
Non-authorized staff is not allowed to replace components. Many
components of the MEWP have been calibrated: a correct cali-
bration of these parts (which is possible only in C.M.C. or in au-
thorized repair shops) is necessary to assure the safety of the
machine.
Problem: OUTRIGGERS RED LIGHT DOES NOT TURN ON.
Cause: 1. The MEWP aerial part is not in transport position.
2. The red light does not work.
3. One of the outriggers micro-switches is not working.
Remedies: 1. Place the MEWP aerial part in the transport position.
2. Replace the light.
3. Replace the MEWP supply DPDT relay (double pole dou-
ble throw.
4. Replacement of micro-switches.
If the problem persists, contact the Service.
___________________________________________________________
Problem: OUTRIGGERS DO NOT WORK.
Cause: 1. The hydraulic pump group is in failure.
2. Outriggers electro valve does not work.
Remedies: 1. Replace hydraulic pump.
If the problem persists, contact the Service.
___________________________________________________________
Problem: WITH THE STABILIZED MEWP, THE GREEN LIGHT DOES NOT
TURN ON.
Cause: 1. The green light does not work.
2. Micro-switch system does not work.
3. Stabilization is insufficient.
Remedies: 1. Replace micro-switch.
2. Further extract outriggers.
If the problem persists, contact the Service.
___________________________________________________________
Problem: MEWP AERIAL STRUCTURE DOES NOT WORK WHEN THE
OUTRIGGERS CONTROL GREEN LIGHT IS ON.
Cause: 1. The hydraulic pump group is in failure.
2. Emergency button on.
Remedies: 1. Replace the hydraulic pump.
2. Turn the emergency button and reset the MEWP
If the problem persists, contact the Service.
___________________________________________________________
Problem: PLATFORM LEVELLING DOES NOT WORK.
Cause: 1. Oil leakage.
2. Cylinders gaskets wear.
Remedies: 1. Tighten hydraulic connections.
2. Replace gaskets.
If the problem persists, contact the Service.
___________________________________________________________
Problem: OPERATIONS ARE SLOW.
Cause: 1. Pump in failure.
2. Insufficient hydraulic oil.
3. Blocked oil filter.
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