Daewoo DDA80, User Manual

Page: 17 / 26

8. TROUBLESHOOTING
Problem Cause Remedy
Pu
m
p
n
o
t
p
um
pi
ng
l
iq
u
id
Not enough fill water ． Refill the pump with water ．
Leaking inlet pipe ．
Check the inlet pipe and connector
of pipe
， change pipe or tighten the
clipper joint screw ．
Low pump speed ．
Adjust the engine speed accordingly
or find cause within the engine
The filter net is clogged ． Check and clean the filter net ．
Capacity of the pump has been
exceeded
．
Check the position of the pump and
fix the operating conditions as
specified
．
Seal wear and leakage ． Change the seal ．
No
t
e
no
ug
h
wa
t
er
f
lo
w
The filter net ， pipeline ， or
impeller is clogged ．
Clean out the clogging matter ．
Speed is low ． Increase speed ．
Impeller or seal is seriously
worn and gap is too large
．
Adjust the gap or change the impe-
ller and seal
．
Leaking inlet pipe ．
Check the inlet pipe and connec-tor
of pipe
， change pipe or tighten the
clipper joint screw ．
Impeller damage and or serious
leakage
．
Change the impeller to a new one ．
F
l
ow
o
f
wa
te
r
is
n
o
t
s
t
ea
dy
o
r
c
on
st
an
t
The total lift is too high ．
Check for the cause of the problem
and adjust if necessary
．
There is air in the pump or the
inlet pipe and seal are
leaking
．
Taketheairdraincapoffandrelease the
air
． Check the pipeline and or
change the pump seals ．
Engine speed is not stable or
constant
Adjust the speed of the engine
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