Frico Thermozone SF WL Series, Assembly And Operating Instructions Manual

Page: 15 / 20

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.