Tabla de contenido
Publicidad
Troubleshooting
Dépannage ......................................22
Diagnóstico de problemas ...............23
故障排除 ..........................................24
Устранение неполадок ..................25
The pump will pull a vacuum, but vacuum slowly decreases
EN
If the pump will pull a vacuum, but vacuum slowly decreases, then there is
an external leak. Follow these instructions to locate and repair the leak:
1. Connect the pump to a Device Under Test (DUT) with a Ralston
Quick-test™ hose.
2. Make sure the process connections are assembled wrench-tight.
3. Pull a vacuum with the Hand Pump.
4. Spray soapy water or leak detection fluid where leaks are suspected.
5. Observe where bubbles are getting sucked into the pump to determine
where there is a leak.
6. Remove the leaking part and remove the O-ring.
7. Clean and lubricate the O-ring.
8. Replace the O-ring and reassemble.
Vacuum decreases when pumping piston returns to pump
If the vacuum decreases when pumping piston returns to pump, then the
Internal Check Valve is not functioning properly. Follow the instructions to
replace the internal Check Valve:
1. Remove the Pumping Piston.
2. Remove the Internal Check Valve.
3. Clean and lubricate the Check Valve.
4. Reinstall the Check Valve.
5. Reinstall the Pumping Piston.
When the Pumping Piston is pumped, vacuum does not
increase and air is felt getting sucked into the External
Check Valve located opposite of the Bleed Valve.
If when the Pumping Piston is pumped, vacuum does not increase and
air is felt leaking into the External Check Valve located opposite of the
Bleed Valve, then the External Check Valve is not functioning properly.
Follow instructions to replace the External Check Valve:
1. Remove the External Check Valve
2. Clean and lubricate the External Check Valve.
3. Reinstall the External Check Valve.
Solução de problemas .....................26
Diagnostica ......................................27
Fehlerbehebung ..............................28
21
Publicidad
Tabla de contenido
