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The following table shows possible problems and their causes:
Problem, cause, remedy
Problem
Machine does not start
Valve trigger jams
Machine is rotating too
slowly
Motor seizes up / jams
Gear makes loud noises
Drill bit cannot be
clamped in the drill chuck
We ask you to send the machine to the manufacturer, if necessary.
To guarantee the performance of the machine it is necessary to compensate the pressure under
water. For every 10 meters of depth it is necessary to add one bar pressure to the compressor with
respect to the indicated.
Unless otherwise specified, our „General Sales Terms" apply. Warranty and liability claims in regards to
persons or equipment damages are invalid, if one or more of the following causes apply:
• Improper use of the machine.
• Improper assembly, startup, operation or maintenance of the machine.
• Operation of the machine with defect safety devices or improperly fixed or non-functioning safety and
protection devices.
• Not considering of the instructions in the operating instruction booklet concerning transport, storage,
36
TROUBLESHOOTING
Cause
Not connected to compressed air
Rotor rusty due to humidity
Vanes jam (worn out)
Gear blocks
Impurities in the valve
Too little operating pressure Hose
diameter too small
Too little volume flow
Rotor is rubbing against the end plate /
cylinder bushing
Gear parts are worn down
Vanes are worn or broken;
broken parts are jammed between the
rotor and the cylinder bushing
No lubrication – ball bearings were
running dry; rotor was rubbing against the
end plates
Coarse dirt particles in the motor
compartment between the rotor and the
cylinder bushing
Needle cages are defective Gear teeth are
chattering Ball bearings are defective
Drill chuck defective
Diameter of drill bit too small
WARRANTY AND LIABILITY
Remedy
Connect and open the supply line
Disassemble motor and clean it Check
functioning of maintenance unit
Disassemble motor and clean it, replace
worn out parts
Disassemble gear, clean it, replace worn
out parts
Clean valve seat
Increase operating pressure Choose
larger hose diameter
Increase volume flow
Disassemble motor and clean it, replace
worn parts
Disassemble gear, clean it, replace worn
out/damaged parts
Disassemble motor and clean it, replace
worn out parts
Disassemble motor and clean it, replace
worn out parts
Disassemble motor and clean it, replace
worn out parts
Disassemble gear, clean it, replace worn
out parts
Replace drill chuck
Use drill bit with larger diameter
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