EDILGRAPPA MU 22N, Инструкция по эксплуатации и обслуживанию, Страница: 16 / 20

MU 22N
16
FAULT POSSIBLE REASON POSSIBLE REMEDY PERFORMED BY
ELECTROMAGNETIC
DISTURBANCES IN
LINE
Fault in anti-
disturbance filter
Replace R
Manifold worn Replace R
Brushes worn Replace R
4.03 TROUBLESHOOTING THE HYDRAULIC COMPONENTS
FAULT POSSIBLE REASON POSSIBLE REMEDY
PERFORMED
BY
OUTWARD
STROKE DOES
NOT BEGIN
Return stroke incomplete Push back the piston O
Return spring broken (if present) Replace O
Max. pressure valve dirty Consult the Maker /
Manual return valve dirty Clean O
Manual return valve faulty Repair M
Oil tank empty Fill O
Valve remains open due to built-up
dirt
Clean O
MOTOR DOES
NOT STOP
Earth cable interrupted Repair M
Earth cable rusted Clean O
OUTWARD
STROKE
INCOMPLETE
No oil Top up O
OUTWARD
STROKE
DISCONTINUOUS
Air bubbles in the hydraulic
circuit
Vent O
Max. pressure valve open due to
built-up dirt
Consult the Maker
/
Pump faulty or dirty Replace M
Piston gasket faulty Replace M
Pump O-ring Replace M
RETURN STROKE
INCOMPLETE
Dirt between piston rod and tool
Move the piston to its end-
of-stroke position and clean
O
Return spring broken Replace O
NO FORCE
Oil hydraulic pump faulty Replace M
Dirt on oil hydraulic pump valve Replace M
Max. pressure valve open Replace M
Piston gasket worn Replace M
Pump O-ring broken Replace M
PISTON DOES
NOT
AUTOMATICALLY
REVERSE
STROKE
Automatic reverse valve faulty Replace M
OIL LEAKS ROM
TANK COVER
Membrane faulty Replace O