Danfoss PVG 32 Service Manual page 3

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Service
Manual
PVG
32
Proportional Valve Group
System
Troubleshootin g
Troub
I
eshooting flow
cha
rt
Our service
manuals give full
guidance on
use
of
special tools.
No cylinderlmotor
response in
either direction
when remote
controller
is
actuated
P1
07 823
Mechanica
Ele:ctronic
Software
Cause Check
Corrective action
Veriff
if
fault
is
mechanical, electrical
or
hydraulic
Operate manual
lever
to confirm mechanical or
electrical or
hydraulic
lf
moving
the manual
lever operates the
cylinder/motor
check electrical or hydraulic
Sticking main spool
Remove
manual, electrical, and hydraulic actuators
from the valve section. Remove main spool from valve
section and inspected for damage. lf no damage
reinstallthe main valve spool and it should move
freely
in
the valve section bore.
Replace the valve module and main spool.
lf any damage
is
found
on the main spool
Check
movement of manual lever when electrical
controller
is
operated
lf manual
lever does
not
move check electrical voltage
signal
from
controller, wiring
at
the
PVE
module
Check movement
of
manual lever when hydraulic
controller
is
operated
lf
manual
lever does
not
move check hydraulic controller
pressure at the
PVG
valve module - 25
Bar t36O PSll
lf none of the above check
pump per manufacturers
recommended procedure
Repair or replace
pump per manufacturers
recommended procedure
lnternal filters blocked
Checkfor blockage in
internalfilters
r
Remove blockage
17039167 . Rev BA
.
May
2o14