LHL and Grease Systems
No grease coming from the pump
- Low grease level — Replace grease cartridge
- Change in grease consistency, too thick to pump — Check grease grade and temperature
- Only drawing air — Open the vent plug to release air from the pump
- Motor rotating in the wrong direction — Check motor wiring
- Solenoid valve (if present) not activating — Replace solenoid valve and check connection polarity
No pressure increase in the main line
- Pressure relief valve dirty — Clean the relief valve
- Air in the pipe system — Loosen the plug at the furthest point and run the pump to purge air
- Check the system for faulty connections — Fix any issues found
- Damage to the piping system — Repair or replace damaged piping components
No grease coming from the valves
- Pressure relief valve not functioning — for automatic release models: Inspect the valve
- Valve clogged — Replace valve
- No grease in the secondary line (from valve to bearing) — Fill with grease during initial installation
Air in the main line
- Air ingress on the suction side — Low grease level in tank, fill tank with correct grease grade
- Piping system damaged — Repair or replace damaged components
Pump not running but indicator is on
- Incorrect wiring — Check motor wiring
- Safety switch in OFF position — Press the reset button
Fault indicator is lit
- Pump operation time not set correctly — Check delivery setting
- Grease level too low — Replace grease cartridge
Fault indicator cannot be reset
- Reset button was not pressed — Press reset button
Oil Lubrication Systems
The pump does not dispense oil
- Low oil level in the tank — Add the currently used oil
- Clogged intake filter — Clean or replace the oil filter and clean the tank
- Check for unsuitable oil — If unsuitable, clean the entire system, clean the tank, and fill it with the correct oil
- Motor rotates in the wrong direction — Check motor wiring
- Damaged internal pump lines — Repair or replace
- Bypass valve misadjusted — Correctly adjust the bypass valve
- Check inlet and outlet check valves — Disassemble and clean
Note: Never equip a pump with a check valve if not originally intended.
No pressure buildup in the main line
- Check for brittle pipe sections and leaky fittings — Replace as needed
- Ball seat of the pressure relief valve is clogged — Clean the valve
- Air in the piping system — Check for leaks, open the system at the farthest point and run the pump to vent the air
- Incorrect control unit or flow regulator selected — Check manufacturer’s recommendation and replace with the correct unit
- Incorrect pressure setting (gear pump) — Adjust bypass settings
- Damaged O-ring on piston (piston pump) — Replace
- Oil leakage from the distribution block — Properly tighten the fitting or replace the pipe connector
Air in the system
- Oil level in the tank too low — Fill with the correct oil and vent the system as described above
- Damaged pipeline — Replace damaged line
No oil flows through the flow regulator/control unit
- Check flow direction at the hex surface of the regulator or control unit — If incorrect, replace with a functional unit
- Check for clogged unit — Replace unit
Pump does not run, but operation light is on
- Motor incorrectly connected — Check motor wiring
- Circuit breaker is in OFF position — Press the RESET button
Error indicator light is on
- Delivery duration set too short, pump does not reach correct pressure — Check time settings
- Level switch triggered due to low oil level — Fill tank with correct oil
Oil level in tank is correct, but warning indicator is on
- Malfunction in A/B contacts of oil level switch — Contact us
Error indicator cannot be switched off
- RESET button not pressed — Press RESET
- No oil added to tank — Fill with correct oil
- Pump did not reach specified pressure — Contact us
