TECPUMP 900 (12 VDC) 4
8. PROBLEM GUIDE
BREAKDOWN
POSSIBLE CAUSE
SOLUTION
The tank is full. The pump is
working, but the liquid does not go
out through the automatic nozzle.
- There is an air chamber in the delivery line,
and the automatic nozzle cannot be opened.
- Remove the automatic nozzle. Start the pump until it is primed, and the liquid is automatically
going out. Then install again the automatic nozzle.
The pump is working, but no fluid
comes out.
- problem in the suction line
- The bypass valve is opened
- retainer leak
- blocked outlet tube, nozzle or filter
- motor breakdown. The rotor must turn
clockwise, looking at the pump from its heading;
if not, return it for repairing.
- blade friction
- Check whether there are leaks in the suction line.
- Remove and check the valve.
- Tighten the cover or change the retainer.
- Check whether the outlet tube of the pump, the hose, the nozzle and the filter are blocked.
- Check the connection polarity.
- Check whether the blades and the grooves are worn out.
The pump makes noise, but it does
not work.
- dirt inside the pump, blade friction
- motor breakdown
- Clean the pump interior.
- Return it for repairing.
Low flow
- filthy filter
- problem in the suction or delivery line
- The bypass is blocked.
- blade friction
- roller or blade wear
- dirt in the red adapter
- Disassemble and clean the filter.
- Check the suction line in order to see whether there is any leak or restriction; it can be too
narrow, too long or no hermetic
- Remove and check the bypass valve. Clean it.
- Check the blades and the slots in order to see whether these are worn out or not.
- Check whether the roller and the blades are worn out or not; replace them.
- Clean the inner sieve.
The pump runs slowly making
strange noise.
- wrong voltage
- motor breakdown
- Check the inlet voltage.
- Return it for repairing.
The motor is stopped or burns.
- low voltage
- solid impurities in the pump inner
- Check the inlet voltage.
- Disassemble and clean the pump.
The motor heats up excessively.
- high viscosity fluid pumping
- blocked filter
- narrow suction or delivery tube
- motor breakdown
- These fluids only can be pumped during a short period.
- Remove and clean the filter
- Replace it with an adequate tube
- Return it for repairing.
The motor does not start.
- There is no supply system.
- motor breakdown
- not lined up / connected switch connection
- Check the battery state.
- Return it for repairing.
- Fit the switch connection / Connect it.
Liquid leak
- connection joint in bad state
- mechanical seal in bad state
- Check all the connection joints.
- Replace the mechanical seal.
January 2018
