Makita DVP181 Instruction Manual page 10

Stop the pump:
To mak e pump life longer and s m ooth s t art-up, thes e
proc e dures to s h ut off pump s h ould be followed.
1. Clos e the manifold v a lv e between the pump and the
s y s t em.
2. Remov e the hos e from the pump inlet.
Cov e r the inlet port opening to prev e nt any c o ntamination
or foreign partic l es from entering the port.
Checking the oil
Fig.7:
1. Lev e l line
• Alway s c h ec k the
(deterioration, etc . ) before us i ng the pump.
NOTE: Add oil until the oil lev e l is between the upper
and lower lev e l lines of the s i ght glas s . The quantity of
oil is 300 ml.
NOTE: The oil lev e l is important. If it is not between the
upper and lower lev e l lines , it c a n c a us e malfunc t ion.
Replacing the oil
Fig.8:
1. Drain v a lv e
1. Operate the pump for 1 or 2 minutes to warm up the
oil.
2. Turn the pump off.
Troubleshooting
Condition
The pump does not s t art.
The pump does not enough v a c u um.
Oil leak a ge
Abnormal nois e
Remark : If thes e proc e dures do not s o lv e the problem, c o ntac t with y o ur neares t Mak i ta authoriz e d dis t ributor or s e nd
y o ur pump to our s e rv i c e c e nter.
2. Sight glas s
oil lev e l and c o ndition
Possible Cause
1. The battery is not s e t properly.
2. The ambient temperature is too low.
3. Poor wiring c o nnec t ion.
4. The pump is loc k e d.
5. Motor failure.
1. Leak i ng from the s y s t
. Insufficient oil.
3. Dirty oil.
4. Pump parts are worn out.
5. Damaged fittings, gaskets and seal.
6. Motor failure.
1. Damaged gas k e ts and s h aft s e als .
2. Damaged O-ring of oil drain v a lv e .
3. Oil drain v a lv e is loos e .
1. Motor failure.
2. Bearing failure.
3. Loos e bolts .
4. Pump failure.
5. Air is s u c k e d.
3. Remove the drain v a lv e and drain the oil.
4. Refer to "Adding oil" and add new oil.
• Dis p os e of the old oil in ac c o rdanc e
regulations .
NOTE: It is rec o mmended to c h ange the oil after
20 hours of us a ge to protec t pump c o mponents from
c o ntaminants pulled into the pump.
When v a c u uming on old refrigeration s y s t
the oil after ev e ry us a ge.
Vacuum pump oil:
The c o ndition and ty p e of oil us e d in any high performanc e
v a c u um pump are ex t remely important in determining
the ultimate attainable v a c u um. It is rec o mmended to
us e the High Performanc e Vac u um Pump Oil, whic h is
specifically blended to maintain maximum viscosity at
normal temperatures and to improv e s t art up under c o ld
weather.
Cleaning the pump
1. When the oil is ex t remely dirty, replac e the oil and
then operate the pump for 3 to 5 minutes .
2. Drain the oil and add new oil.
If the drained oil is s t ill dirty, repeat this c l eaning
proc e s s two or three times .
em.
10 ENGLISH
Solution
1. Set the battery properly.
2. Warm up the pump in doors .
3. Repair.
4. Repair.
5. Repair.
1. Repair the s y s t em.
. Refill or change oil.
3. Clean the tank and c h ange oil.
4. Repair.
5. Repair.
6. Repair.
1. Repair.
2. Replac e O-ring.
3. Tighten Oil drain v a lv e .
1. Repair.
2. Repair.
3. Tighten bolts .
4. Repair.
5. Tighten c a ps and c o nnec t ions .
Replac e gas k e ts and O-rings .
Replace fittings or re-seal them.
with loc a l
ems , c h ange