Maintenance; Troubleshooting - Schwank Select12 Series Manual

Maintenance

Unit with water heating
The appliance filter should be cleaned regularly
to ensure the air curtain effect and heat emission
from the device. How often depends on local
circumstances. A clogged filter is not a risk, but
the appliance function can fail.
1. Disconnect the power supply.
2. The front hatch is removed by removing the
screws on the top of the unit and then detach
the bent edge at the bottom. (Fig.3)
3. Remove the filter and vacuum clean or wash it.
If the filter is clogged or damaged, it may need
to be changed.
All units
Since fan motors and other components are
maintenance-free, no maintenance other than
cleaning is necessary. The level of cleaning can
vary depending on local conditions. Undertake
cleaning at least twice a year. Inlet and exhaust
grilles, impeller and elements can be vacuum
cleaned or wiped using a damp cloth. Use a
brush when vacuuming to prevent damaging
sensitive parts. Avoid the use of strong alkaline or
acidic cleaning agents.
Overheating
The air curtain unit with electrical heating is
equipped with an overheat protection. If it is
deployed due to overheating, reset as follows:
1. Disconnect the power supply with the isolator
switch.
2. Determine the cause of overheating and rectify
the fault.
3. Remove the front hatch.
4. Press the red button located inside the air
curtain unit, at the inner gable of the terminal
box.
5. Reattach the front hatch and connect the unit
again.
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.
schwankgroup.com/schwankair
Temperature control
See control pages.
Replacing motor or impeller
1. Remove the front.
2. Remove gable end.
3. Remove the screw between motor and fan.
4. Disconnect the cables to the motor.
5. Remove the screws securing the motor and lift it
out together with the impeller.
6. Install the new motor and/or the new impeller
as above in reverse order.
Replacing heating elements/heating
package (TE)
1. Mark and disconnect the cables to the heating
elements/package.
2. Remove the mounting screws securing the
heating elements/package in the unit and lift
the heating elements/package out.
3. Install the new heating elements/package in
reverse order to the above.
Replacing the water coil (TW)
1. Shut off the water supply to the unit.
2. Disconnect the connections to the water coil.
3. Detach the plastic ends.
4. Detach the intake grille by drilling out the
rivet(s).
5. Remove the mounting screws securing the coil
in the unit and lift out.
6. Install the new coil in reverse order to the above.
Draining the water coil (TW)
The drain valve is on the underside of the coil on
the connector side. It can be accessed via the
front hatch.

Troubleshooting

If the fans are not running or do not perform
properly, check the following:
• The functions and settings of the built-in control
system.
• That the intake grille/filter is not dirty.
If there is no heat, check the following:
• The functions, internal sensor and settings of
the built-in control system.