Nilfisk FOOD MD421 Instrucciones De Uso página 22

9.8. Trouble Shooting and Remedy
Fault
The unit does • Is there voltage to the unit
not start • The unit does not start after reconnecting
voltage
• Unit starts after changing start up method
• After reactivating flow start
The "Δ" lamp on
• Error messages on display
the control panel
is flashing
• Error after restart
No pressure / • Insufficient water supply
too low pressure • Is the filter clogged
• Is the pump leaking or making jarring sounds
• Rinsing nozzle not installed
• Defect in booster unit
• No water supply
Insufficient foam • No supply of diluted products
creation • Product not suitable
• Insufficient air supply
• Air presure in mixing chamber too high
• Defect non return valve for air
• Incorrect nozzle
No foam crea- • No supply of diluted products
tion • Product not suitable
• Air pressure in mixing chamber too high
• Defect non return valve for air
• No air supply
• Non return valve blocked
• Nozzle of mixing chamber blocked
No spray sani- • No supply of diluted products
tising • Non return valve blocked
• Nozzle of mixing chamber blocked
In case of errors/troubles not mentioned above, please contact your local service technician for further assis-
tance.
9.9. Service address
Please see the back cover of this manual
22
Cause Remedy
• Reconnect voltage
• Go to setup ->settings menu ->startup
method and set it to pressure
• Set unit back to flow start in setup menu
• Try to re adjust flow switch
• Press "O" wait for a few seconds and
then press "1" on the control panel to
restart the system
• Go to software manual
• Open water supply valve
• Clean the filter
• Call technician
• Place rinsing nozzle
• Consult direction for use of booster unit
• Ensure water supply
• Consult directions for use of dosing unit
• Choose suitable product
• Provide sufficient air supply
• Adjust air pressure setting
• Replace non return valve for air
• Place foam nozzle 50/200
• Consult directions for use of dosing unit
• Choose suitable product
• Adjust air pressure setting
• Replace non return valve for air
• Ensure air supply
• Clean or replace non return valve
• Clean nozzle
• Consult directions for use of dosing unit
• Clean or replace non return valve
• Clean nozzle