TROUBLE SHOOTING
Trouble shooting guide
WARNING!
Most accidents involving machines occur during trouble shooting, service and maintenance as staff have to locate themselves within the machine’s risk area. Prevent accidents by being alert and by planning and prepar- ing the work. You can also refer to ’Preparations for maintenance and service” in the ’Maintenance and serv- ice” section.
If service operations or trouble shooting does not require the machine to be switched on, the power cable must be removed and positioned so that it cannot be connected by mistake.
Following the trouble shooting guide will provide you with tips to facilitate the trouble shooting process. You can also perform simpler trouble shooting operations. The operator may only carry out the maintenance and service opera- tions that are described in this Operator’s Manual. More extensive interventions must be carried out by an authorized service workshop.
Always start by checking any error messages on the remote control. Follow the instructions for the respective mes- sage in accordance with the error messages section.
Fault | Cause | Possible action | |
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The electric motor | Emergency stop/machine stop | Check that the emergency stop or machine stop button | |
does not start | is pressed. | are not pressed by turning them clockwise. | |
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| Too low mains voltage to the | Check power supply and ensure correct voltage. | |
| machine. |
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| A fuse has blown. | Check that the mains voltage is compatible with the ma- | |
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| chine and that the correct fuses are used. | |
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| No radio communication | Green symbol in the display indicates contact. If the symbol | |
| between remote control and | does not light up, check that the battery for the remote con- | |
| machine. | trol is charged and correctly inserted. Ensure that the cor- | |
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| rect remote control is being used. Check that the commu- | |
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| nication cable and aerial cable on the machine are properly | |
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| secured. Test run the machine using cable control. | |
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Fuses for the mains | The machine’s fuses have too | Check that the mains voltage is compatible with the ma- | |
connection blow when | low a rating. | chine and that the correct fuses are used. | |
starting. |
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Electric motor blown. | Contact your service agent. | ||
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| The hydraulic pump has cut | Contact your service agent. | |
| out. |
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The machine works | Too low mains voltage to the | Check power supply and ensure correct voltage. | |
but the motor speed | machine. |
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decreases substantial- |
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Incorrectly dimensioned | Ensure that the power cable is correctly dimensioned. | ||
ly during operation. | power cable. | Refer to “Guide values for mains connection” in the | |
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| “Technical data” section. | |
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The motor runs but | Not enough hydraulic ßuid | Stop the motor at once. Investigate and rectify any leaks | |
the hydraulic functions | in the tank. (Knocking noise | there might be. Replenish hydraulic ßuid. | |
have no power or do | coming from the tank.) |
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not work at all. |
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Pump around valve open. | Check the diode on the valve cap at the bottom of valve | ||
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| block 1. If the pump around valve is open the diode does | |
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| not light up. Check the cable to the control module. | |
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| Fault in the pump regulator. | Extend an unloaded cylinder to its end position and | |
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| check the pump pressure in the display (under “Service”). | |
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| If you get maximum pressure the pump regulator is OK. | |
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| Pressure at rest set too low. | Activate the remote control without running any functions | |
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| and check the setting for pressure at rest in the display. | |
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| The pressure should not exceed 16 Bar. | |
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Arm movements | The potentiometer that con- | Unscrew the knob(s). | |
and tool function run | trols mechanical movements/ |
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slowly. | tools is screwed down. |
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| Pressure at rest set too low. | Activate the remote control without running any functions | |
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| and check the setting for pressure at rest in the display. | |
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| The pressure should not exceed 16 Bar. | |
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48 - English
