MecaTech MT424 Notice D'utilisation page 17

Cleaning of the machine
This can be done with non-aggressive and non-abrasive cleaning products.
Fast coupling maintenance
The O-ring in the fast coupling will age due to the influence of the cleaning liquids and mechanical stress
by the coupling action.
The machine contains on spare set of O-rings for replacement. O-rings can easily be replaced by uns-
crewing the two coupling parts.
ACTION
Connect the return

hose to the engine.
Fill the tank with

liquid.
Open the pressure

regulator completely
(turn counter –
clockwise).
Press the START

button.
CLEANING & MAINTENANCE
DETECT FAILURES
FAILURE
Pump does not start

to run.
Tank is empty, pump

start to work.
 When pouring liquid
in the tank, the
pump starts running.
Engine is running but

pump does not
generate any
pressure.
POSSIBLE CAUSE
Loose contacts at :

- Floating device
- Pump
 Electronic card is
faulty
Fuse has melted

Pump is faulty

The floating device

does not make
contact.
 Electronic card is
faulty.
Floating device is

faulty.
Overpressure in

system.
SOLUTION
Fix the again.

 Replace the card
Replace the fuse

Replace the pump

Replace the floating

device by a new one
 Replace
Replace

Press the STOP

button. Attend the
stop the motor. Turn
pressure regulator
completely open.
Press the START
button.