EDILGRAPPA MU 22N Use And Maintenance Instructions - Page 16

Browse online or download pdf Use And Maintenance Instructions for Power Tool EDILGRAPPA MU 22N. EDILGRAPPA MU 22N 20 pages. Machine body with interchangeable heads

Print Page
MU 22N
FAULT
ELECTROMAGNETIC
DISTURBANCES IN
LINE

4.03 TROUBLESHOOTING THE HYDRAULIC COMPONENTS

FAULT
OUTWARD
STROKE DOES
NOT BEGIN
MOTOR DOES
NOT STOP
OUTWARD
STROKE
INCOMPLETE
OUTWARD
STROKE
DISCONTINUOUS
RETURN STROKE
INCOMPLETE
NO FORCE
PISTON DOES
NOT
AUTOMATICALLY
REVERSE
STROKE
OIL LEAKS ROM
TANK COVER
16
POSSIBLE REASON
Fault in anti-
disturbance filter
Manifold worn
Brushes worn
POSSIBLE REASON
Return stroke incomplete
Return spring broken (if present)
Max. pressure valve dirty
Manual return valve dirty
Manual return valve faulty
Oil tank empty
Valve remains open due to built-up
dirt
Earth cable interrupted
Earth cable rusted
No oil
Air bubbles in the hydraulic
circuit
Max. pressure valve open due to
built-up dirt
Pump faulty or dirty
Piston gasket faulty
Pump O-ring
Dirt between piston rod and tool
Return spring broken
Oil hydraulic pump faulty
Dirt on oil hydraulic pump valve
Max. pressure valve open
Piston gasket worn
Pump O-ring broken
Automatic reverse valve faulty
Membrane faulty
POSSIBLE REMEDY
Replace
Replace
Replace
POSSIBLE REMEDY
Push back the piston
Replace
Consult the Maker
Clean
Repair
Fill
Clean
Repair
Clean
Top up
Vent
Consult the Maker
Replace
Replace
Replace
Move the piston to its end-
of-stroke position and clean
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
PERFORMED BY
R
R
R
PERFORMED
BY
O
O
/
O
M
O
O
M
O
O
O
/
M
M
M
O
O
M
M
M
M
M
M
O