VIVOHOME SPECSTAR VB260 - Maintenance and Troubleshooting

54
SECTION D
Maintenance, and Troubleshooting
Failure
1. Oil seal is damaged
2. Oil tank connections are loose
or damaged
1. Oil temperature is too low
4. Voltage is too low
Oil leak
Oil leak
Difficult
startup
Possible Reason Remedy
Repace the seal
2. Pressure at the inlet remains
high for a long time
Choose a pump with a higher
pumping speed
2. Motor or power supply is
defective
Check and repair
The air inlet is exposed to the
atmosphere, repeatedly start the
motor or heat the pump oil
1. Too much oil inside the pump
Drain oil to the middle line on
the oil sight gass
Check the voltage
3. Foreign objects enter the pump Check and repair
Check and repair, or repace the
pump
Note:
1. If the problem is still not fixed, please contact your local dealer or
send the pump to a professional repair center to find out a solution.
2. We reserve the right to modify any information including design and
technical data in this manual without prior notice.
Troubleshooting
Failure
1. The air inlet cap is loose
2. The rubber ring inside the air
inlet cap is damaged
5. The oil inlet is blocked or the
oil supply is insufficient
8. The service time of the pump is
so long that parts are worn
Low
vacuum
Possible Reason Remedy
Tighten the air inlet cap
4. Oil is emulsified or dirty Repace the oil
6. The connecting pipe leaks Check and fix the pipe
Clean the oil inlet and the filter
3. Oil is insufficient
Fill oil to the middle line on the
oil sight gass
Check and repair, or repace the
pump
7. The pump is improper
Check the size of the vessel,
recalcuate and select a proper
model
Repace rubber ring
The pump is not allowed to operate for more than 3 minutes while
the inlet is exposed to the atmosphere.
The ambient temperature for proper operation is
5°C-40°C(41°F-104°F).
The voltage of the pump is 110V±10%~60Hz. The power socket must
be grounded.
The pump body will be damaged to take out the refrigerant when
the pump chamber is pressurized. It is recommended to use special
equipment to do this work.
Maintenance
1. Pump oil selection
It's important to select the proper vacuum pump oil to achieve the
desired ultimate vacuum. To ensure the best performance of the pump,
it is recommended to use vacuum pump oil with a low viscosity grade
of 32 - 46.
The pump oil must be repaced immediately while it is emulsified or
contaminated.
Operate the pump for about one minute to warm it up before chang-
ing the oil;
Open the inlet when the pump is running so that the oil in the pump
chamber is forced to flow out. Switch off the pump and remove the
drain plug to drain the oil. Keep the drained oil in a suitable vessel
and dispose of it properly;
Tilt the pump body towards the drain plug to completely empty the
pump chamber;
Tighten the drain plug;
Remove the filling plug and add new pump oil;
Tighten the inlet cap, operate the pump for one minute and check
the oil level. In case the oil level is below the MIN position on the oil
sight gass, fill the oil to a level between MAX and MIN positions.
Install the oil mist trap.
2. Oil changing procedure
1.
2.
3.
4.
5.
6.