wynn’s FuelsystemServe Handbuch Seite 9

Action
- Connect the return hose to
the engine.
- Fill the tank with liquid.
- Open the pressure regulator
completely (turn counter-
clockwise)
- Push 'START' button.
Slowly close the pressure
regulator to increase the
pressure.
Failures
Failure
Pump does not start to run
Tank is empty, pump starts
to work
Pump starts, but switches off.
- The pressure irregularly
increases.
- The pressure insufficiently
increases or not at all.
With regulator open, the
initial pressure is too high.
Possible cause
- The floating device does not
operate.
- Loose contacts at:
- floating device
- pump
- The fuse has blown.
- Pump is out of order.
- Floating device gives no
contact.
- Over voltage
Overpressure in system caused
the temperature safety switch
to switch off pump.
- Pump is damaged.
- Pressure gauge is damaged.
- The pressure regulator is
dirty or damaged.
- The pressure regulator leaks.
- Resistance in pressure hose
because of a crack in the hose
between pressure gauge and
outside pressure connection.
- Resistance in the regulator.
- Regulator is damaged.
- Crack in the hose at regulator
inlet or outlet.
9
Solution
- Replace floating device with
a new one from Wynn's.
- Fasten them.
- Repair fuse.
- Replace pump with a new
one from Wynn's.
- Replace floating device with
a new one from Wynn's.
- Disconnect clamps of power
source and connect to a 12
volt source.
Switch off machine and wait
approx 30 min. Remove
obstruction in hose. Turn
pressure regulator completely
open. Start Machine again.
- Replace the pump.
- Replace the pressure gauge.
- Clean or replace.
- Dismantle it and replace
the seals.
- Open the machine and
replace the hose.
- Dismount it, check it and
eventually repair or replace it.
- Replace it.
- Replace the hose if
necessary.
EN