Danfoss 51 Series Manuale di servizio - Pagina 3
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Service
Manual
Series
51
and
5l-1
Motors
Service
Manual
Initial startup
procedures
Procedure
Always
follow
this procedure when starting-up
a
new
Series
51
or
Series
51-1 installation
or
when
restarting
an
installation
in
which
eitherthe pump
or
motor
has
been removed.
,&
warnimg
Tlris service
r:rocedure may require disabiing the vehicle
/
rnachine
(raising
the
rarheels
cf"f
the ground,
rJisconnectinq work
function,
and
so
forth)
v,rhile
performing, to prevent injury
to
the teclrnician
anil
bystanders.
Take
the
necessary
safety
grrecautions.
1.
Before
installing
the
motor
and/or pump, inspect
the
units for damage incurred
during
shipping
and
handling.
2.
Make
certain
all system
components
(reservoir,
hoses,
valves,
fittings,
heat exchanger, and
so
forth)
are clean
before
filling with fluid.
3. Fillthe
reservoir
with
recommended hydraulic
fluid.
Filter
using
a
10
micron
(nominal, no
bypass)
filter
into
the
reservoir.
Using contaminated
fluid
may
damage components
which
may result
in
unexpected vehicle/mach ine movement.
4.
Fill
the
inlet line leading
from the
reservoir
to
the
pump.
5.
Check
inlet
line
for
properly
tightened fittings
6.
Make sure
the inlet
line
is
free of restrictions and air
leaks.
7.
Fillthe motor and/or pump
housing
with
clean hydraulic
fluid
before start up.
Fill by
pouring
filtered
oil into
the
upper
case
drain port.
i&
caution
itlever start
the prime mover
unless
the motor
and pump
are
filled
cornpletely
with
clean hyclraulic
fh-rid.
8.
lnstall
a
G60
bar
[0-1000 psil
pressure
gauge
in
the charge
pressure
gauge
port
of
the
pump
to
monitor the charge
pressure
during start-up.
9.
Disconnect
any
external
control input
signal
(linkage
for
MDC,
hydraulic
lines
for
HDC,
or electrical
connections
for
EDC)
from
the
pump control until
after initial start-up.
This ensures
that
the
pump
remains
in
its
neutral position.
10.
Use a
common method
to
disable the prime mover.
Jog
(slowly rotate) prime mover
until
charge
pressure starts
to
rise.
1
1.
Enable
prime mover.
Start
the
prime mover and run
at
the
lowest possible speed
until
charge
pressure
is
established.
"&
warning
Do
not
start
the
prime mover
unless
the pump
is
in neutral
position
{swash
plaie at
0"
anqle). Take
necessary
precautions
to
prevent machine movement in
case
pump
is
actuated in stroke durinq
initiai start-up.
lf
necessary,
bleed
excess air
from
the
high
pressure lines
through the high
pressure sysrem
gauge
port.
12.
Once
charge
pressure
is
established,
increase speed
to
normal operating
speed.
Charge pressure
should
be
as
indicated
in
the
and
determine
cause. See Troubleshootino on
pump model
code. lf
charge
pressure
is
low, shut down
page 29.
1.,-
C*uti*n
Low
charge
pressure may affect
the operators
ability
to
controlthe
machine.
1
1008567
.
Rev BA
.
June
2014
27