Frico Thermozone SF WL Series, Assembly And Operating Instructions Manual

SF WL

15

GB  

Filter

The heat coil plate distance in combination 
with the hole diameter of the intake grille 
protects against dirt and blockage and makes 
a separate filter unnecessary.

Service, repairs and maintenance

For all service, repair and maintenance first 
carry out the following:
1. Disconnect the power supply.
2. The service hatch is opened by slackening 

off the screws in the side of the unit.

Maintenance

Since fan motors and other components are 
maintenance free, no maintenance other than 
cleaning is necessary, this can vary depending 
on local conditions. Undertake cleaning 
at least twice a year. Grille, impeller and 
elements can be vacuum cleaned or wiped 
using a damp cloth. Avoid the use of strong 
alkaline or acidic cleaning agents.

Overheating

All motors are equipped with an integral 
thermal safety cut-out. This will operate, 
stopping the air curtain should the motor 
temperature rise too high. The cut-out 
will automatically reset when the motor 
temperature has returned to within the 
motor's operating limits.

Fan replacement

1. Determine which of the fans is not 

functioning.

2. Disconnect the cables to the relevant fan.
3. Remove the screws securing the fan and lift 

the fan out.

4. Install the new fan in reverse order to the 

above.

Replacing the water coil

1. Shut off the water supply to the unit.
2. Disconnect the connections for the water 

coil.

3. Remove the mounting screws securing the 

coil in the unit and lift the coil out.

4. Install the new coil in reverse order to the 

above.

Draining the water coil

The drain valve is on the underside of the coil 
on the connector side. It can be accessed via 
the service hatch.

Trouble shooting

If the fans do not run, check the following:
1. Operating power supply to the unit; check 

fuses, circuit-breaker, time switch (if any) 
that starts and stops the unit.

2. That the air flow selector is correctly set.
3. That the position limit switch is working (if 

installed).

4. That the overheat protection for the motors 

has not been deployed.

5. That the intake grille is not dirty.

If there is no heat, check the following:
1. That there is hot water to the water 

coil. (Check the circulation pump - if 
applicable.)

2. That the heat demand exists; check 

thermostat settings and actual temperature.

3. That the intake grille is not dirty.

If the fault cannot be rectified, please contact 
a qualified service technician.

Safety

•  Keep the areas around the air intake 

and exhaust grilles free from possible 
obstructions! 

•  During operation the surfaces of the unit 

are hot!

Technical data is on page 9.