Installation, Operation and Parts Manual
EE-6215E
25
TROUBLE
SHOOTING
ATTENTION:
If
the
trouble
could
not
be
fixed
by
yourself,
please
do
not
hesitate
to
contact
us
for
help.
We
will
offer
our
service
at
the
earliest
time
we
can.
Troubles
could
be
judged
and
solved
much
faster
if
more
details
or
pictures
could
be
provided.
TROUBLES
CAUSES
SOLUTIONS
Abnormal
noise
Abrasion
exists
on
insider
surface
of
the
posts.
Grease
the
inside
of
the
post.
Trash
in
the
post.
Clear
the
trash
Motor
does
not
run
and
will
not
rise
Loose
wire
connection
Check
and
make
a
good
connection.
Blown
motor.
Replace
it.
Damaged
limit
switch
or
its
wire
connection
is
loose.
Adjust
or
replace
the
limit
switch.
Motor
runs
but
will
not
raise
The
motor
run
reversely.
Check
the
wire
connection.
Overflow
valve
is
not
well
screwed
up
or
jammed.
Clean
or
make
adjustment
Damaged
gear
pump.
Replace
it.
Too
low
oil
level.
Add
oil.
The
hose
connection
is
loose.
Tighten
it.
The
cushion
valve
is
not
well
screwed
up
or
jammed.
Clean
or
make
adjustment
Carriages
go
down
slowly
after
being
raised
The
oil
hose
leaks.
Check
or
replace
it.
Untightened
oil
cylinder.
Replace
the
seal.
The
single
way
valve
leaks.
Clean
or
replace
it.
Solenoid
valve
fails
to
work
well.
Clean
or
replace
it.
Slack
steel
cable
Check
and
adjust
the
tightness.
Raising
too
slow
Jammed.
Oil
filter
Clean
or
replace
it.
Too
low
oil
level.
Add
oil.
The
overflow
valve
is
not
adjusted
to
the
right
position.
Make
adjustment.
Too
hot
hydraulic
oil
(
above
45°
）
.
Change
the
oil.
Abraded.
Seal
of
the
cylinder
Replace
the
seal.
Inside
surface
of
the
posts
is
not
well
greased.
Add
grease.
Lowering
too
slow
Jammed
throttle
valve
Clean
or
replace.
Dirty
hydraulic
oil
Change
the
oil.
Jammed
anti
‐
surge
valve
Clean
it.
Jammed
oil
hose
Replace
it.
The
steel
cable
is
abraded
No
grease
at
installation
or
out
of
lifetime
Replace
it.
