Instructions For Maintenance; Reminders For The Maintenance Technician; Conversion To A Different Type Of Gas; Commissioning - Mareno NF74G Serie Instrucciones Para Instalación, Uso Y Mantenimiento

• Clean with non-flammable detergents.
SATIN FINISH STAINLESS STEEL SURFACES
• Clean the surfaces with a cloth or sponge using water and
proprietary non-abrasive detergents. Follow the direction of
the satin finish lines. Rinse repeatedly and dry thoroughly.
• Do not use pan scourers or other iron items.
• Do not use chemical products containing chlorine.
• Do not use sharp objects which might scratch and damage
the surfaces.
COOKING WELLS
• Clean the wells by bringing the water to the boil, with the ad-
dition of grease remover detergent if necessary
• Remove any limescale deposits with a proprietary limescale
remover
15 FILTERS
The use of oil filters prolongs the life of the oil and, if the oil is
reused, guarantees better cooking of the food. To clean the
filter, extract it from its seat; if the filter is greasy, wash it with
a degreasing soap, rinse and dry When the procedure is con-
cluded refit the filter in its seat When the filter is deteriorated it
must be renewed

INSTRUCTIONS FOR MAINTENANCE

REMINDERS FOR THE MAINTENANCE TECHNICIAN

The manufacturer will not be liable for any damage or in-
jury resulting from failure to observe the following rules
• Read this manual carefully. It provides important information
for safe installation, use and maintenance of the appliance.
• Installation, conversion to a different type of gas and applian-
ce maintenance must be carried out by qualified technicians
authorized by the manufacturer, in compliance with current
safety standards and the instructions in this manual.
• Identify the specific appliance model. The model number is
detailed on the packing and on the appliance data plate.
• The appliance must be installed in a well-ventilated room.
• Do not obstruct any air vents or drains present on the ap-
pliance.
• Do not tamper with appliance components.

16 CONVERSION TO A DIFFERENT TYPE OF GAS

See Chapter " Instructions for installation "

17 COMMISSIONING

Following installation, conversion to a different type of gas or
any maintenance operations, check appliance operation.In the
event of any malfunction, consult the next Paragraph "Trou-
bleshooting".
17.1 GAS APPLIANCES
Switch on the appliance as directed in the instructions and re-
minders for use given in Chapter " INSTRUCTIONS FOR USE
" and check:
• the gas supply pressure ( see next Paragraph ).
• the correct ignition of the burners and the effectiveness of the
fumes removal system.
17.1.1 CHECKING THE GAS SUPPLY PRESSURE
• To measure the gas supply pressure use a manometer with a
minimum definition of 0.1 mbar.
• Remove the control panel.
• Remove the screw from the pressure test point PP and con-
nect the manometer to the test point.
• Make the measurement with the appliance in operation.
IMPORTANT! If the gas supply pressure is not within the limits
( Min. - Max ) indicated in Table T2 , cease operation of the
appliance and contact the gas utility company.
• Disconnect the manometer and retighten the retaining screw
on the pressure connection.
17.2 ELECTRICAL APPLIANCES
Switch on the appliance as directed in the instructions and re-
minders for use given in Chapter " INSTRUCTIONS FOR USE
" and check:
• the current values of each phase.
• the correct operation of the heating elements.

18 TROUBLESHOOTING

18.1

GAS FRYERS

The pilot burner does not light
Possible causes:
• Insufficient gas supply pressure.
• Blocked tubing or nozzle.
• Defective gas tap or valve.
• Igniter defective or not properly connected.
• Igniter or igniter wire defective.
• Defective safety thermostat
Pilot burner goes out during use
Possible causes:
• Insufficient gas supply pressure.
• Defective gas tap or valve.
• Defective thermocouple or insufficient heating.
• Thermocouple incorrectly connected to gas tap or valve.
• Knob of gas tap or valve not pressed sufficiently.
• Defective safety thermostat
The main burner does not light ( even though pilot is lit )
Possible causes:
• Insufficient gas supply pressure.
• Blocked tubing or nozzle.
• Defective gas tap or valve.
• Defective burner ( gas outlet holes clogged ).
Heating cannot be adjusted
Possible causes:
• Defective gas valve.
18.2

ELECTRIC FRYERS

The appliance does not heat.
Possible causes:
• Temperature thermostat defective.
• Heating elements defective.
• Safety thermostat tripped.
Heating cannot be adjusted
Possible causes:
• Temperature thermostat defective.
47