| Pump will not
start. |
|
|
Check switches and fuses |
- Belt/Pulley or coupling damaged. Pulley
or coupling setscrew loose.
|
|
Check v-belt/pulley or
coupling. |
|
|
|
Drain and refill pump w/warm
fluid. Try to start w/intake open to atmosphere |
|
|
|
Pump to be repaired |
|
| Pump does not
reach Ultimate pressure |
|
|
Flush and change pump oil.
Use a foreline trap and/or pas ballast valve in future
|
- Pump is not filled w/oil, or has low oil level
|
|
Add recommended pump oil. |
- Pump has wrong oil in it.
|
|
Flush & refill w/ recommended
oil |
|
|
|
Locate & eliminate leak
source |
|
|
|
Clean out cold traps &
replacement elements in coaxial and molecular sieve traps. |
|
|
|
Close valve if condensable
vapors are not a problem. |
|
| Excessively noisy
pump |
- Intake or exhaust lines are restricted.
|
|
Clear and straighten out
lines |
- V-belt or coupling damaged.
|
|
Examine v-belt or coupling
and replace. |
- Slapping noise at ultimate pressure is typical for
some pumps
|
|
Gas ballast slightly open
will eliminate this noise. |
- Inside mechanism damaged.
|
|
Pump to be repaired. |
| |
| Pump generates
excessive smoke or oil mist from exhaust port |
- Pump overfilled with oil.
|
|
Drain excess pump oil. |
- Pump operating continuously above its
maximum operating pressure.
|
|
Use larger capacity pump or
modify your vacuum system. |
- Gas ballast valve wide open.
|
|
Close valve or install a
heavy duty exhaust filter |
| |
| Pump oil is
unusual in Color � dark and dirty |
- Pump oil contaminated by process gases,
dirt, or other foreign material ingested by pump.
|
|
Flush and change pump oil.
Use a foreline trap and/or gas ballast valve in future.
Consider using an oil filtration system or inert pump oils
|
|
|
|
Pump was run too low on oil.
The recommended oil was not used. Pump is running
continuously above its maximum operating pressure
|
- Gas ballast valve is plugged.
|
|
Clean gas ballast valve.
Flush and change pump oil |
| |
| Pump does not
achieve its rated pumping speed. |
|
|
Allow pump to run for al
least an hour until it warms up to its operating
temperature. |
- Exhaust or intake line is too narrow
|
|
Install larger inner diameter
tubing |
- Pump oil is contaminated.
|
|
Flush and change pump oil.
Use a foreline trap and/or gas ballast valve in future. |
- Very dirty trap or intake line.
|
|
Clean out cold traps and
replacement elements in coaxial and molecular sieve traps.
Clean or replace vacuum piping. |
| |
| Pump is leaking oil severely
|
|
|
Disconnect pump from exhaust
line and run or clean clog in exhaust line. |
