FAQ – Frequent asked questions
Waste oil suction units, air operated
Waste oil suction unit does not suck.
- Causes: Suction probe too short, clogged with dirt or bent.
- Remedy: Blow through suction probe if clogged with dirt.
Waste oil suction unit does not suck or sucks poorly.
- Causes: Oil temperature is too low. (min. 70°C).
- Remedy: Only suck hot oil. (70°C to 90°C).
Diesel Management System DMS
FAQ Diesel management system DMS
Digital hose end meters
Calibratable flow meter shows “Err”
- Cause: direction of flow incorrectly set.
- Solution: calibration of the direction of flow.
Calibratable flow meter shows only dashes.
- Cause: Empty battery.
- Solution: Return the flow meter for battery replacement.
Electric oil pumps
Electric oil pump always switches on and off.
- Causes: oil temperature has changed, e. g. because of heat or cold. Customer uses oil of higher or lower viscosity.
- Solution: bypass adjustment, call customer service. Customer will get setting instructions by fax.
Oil foams when being pumped.
- Cause: leaky suction line.
- Solution: re-seal suction line.
Electric oil pump does not build up any pressure.
- Cause: air in the system.
- Solution: unscrew oil gun from the pressure line. Put the hose into the barrel and let the pump run until oil is delivered.
Electric oil pump runs continuously.
- Cause: pump draws air through the suction line.
- Solution: unscrew the suction line, clean and re-seal it (sealing tape).
Grease guns and Accessories
Manual lever grease gun does not deliver grease.
- Cause: air in the cartridge or in the grease gun tube.
- Solution: open the grease gun tube by half a turn and vent it.
Lever cylinder pumps
13 042 and related products – Problem: no suction!
Pneumatic grease pumps 50:1
What is the maximum pressure the pump can generate?
- Answer: In the case of a line pressure of 8 bar, the calculated delivery pressure is 400 bar.
Pneumatic grease pump does not generate any pressure and runs continuously.
- Cause: dirt in the suction valve.
- Solution: call customer service. The customer will get an exploded view drawing. (Repair assistance)
Pneumatic grease gun does not generate any pressure.
- Causes: Air in the grease bucket, dented or conical bucket.
- Solution: remove the grease gun from the barrel and put it in a clean place. Firmly push the bucket on the soil several times to expel air from the grease. Push the follower plate down in the bucket until grease escapes in the middle of the follower plate. Now put the grease gun again in the bucket.
Pneumatic diaphragm pumps
19 060 and related products – Problem: no suction!
Pneumatic oil pumps 3:1
What is the maximum pressure the pump can generate?
- Answer: In the case of a line pressure of 8 bar, the calculated delivery pressure is 24 bar.
Pneumatic oil pump does not generate any pressure.
- Cause: air in the system.
- Solution: unscrew the oil gun from the pressure line. Put the hose into the barrel and let the pump run until oil is delivered.
Pneumatic oil pump runs continuously.
- Cause: pump draws air through the suction line.
- Solution: unscrew the suction line, clean and re-seal it (sealing tape).
Maintenance equipment
FAQ maintenance equipment
