Topvex TR800, TR1300, TR1800, TR4000
Operation and Maintenance Instructions
Systemair Inc.
28
5.3.8 Checking the Duct System
Dust and grease may build up in the duct system even if filters are changed regularly. This will reduce the
efficiency of the installation. The duct should therefore be cleaned/changed when necessary. Steel ducts
can be cleaned by pulling a brush, soaked in hot soapy water through the duct via diffuser/louvre openings
or special inspection hatches in the duct system (if fitted).
5.3.9 Changing the Internal Battery in the Corrigo Controller
Note:
This procedure requires knowledge of proper ESD protection; i.e. an grounded wristband must be used!
When the alarm “Internal Battery” is activated and the battery LED lights up red, the battery for backup of
program memory and real-time clock has become too weak. The battery is replaced as described below.
A backup capacitor saves the memory and keeps the clock running for at least 10 minutes after the power
supply is removed. Therefore, if the battery replacement takes less than 10 minutes, there will be no need
to reload the program, and the clock will continue to run normally.
The replacement battery must be of the type CR2032.
5.3.4 Checking the Hot Water Heating Coil
After long periods of operation (usually several years) dust may have deposited on the surface of the coil.
This may reduce coil capacity. The coil can be cleaned with a pressure washer with misting jets, or with
compressed air. Cleaning should be carried out carefully so as not to damage the coil’s aluminum fins.
Once a year the coil water circuit needs to be vented to maintain the coil capacity
5.3.5 Checking the Electrical Heater
After a long period of time dust and pollutants can build up on the heating rods. This can cause unpleasant
odors and, in the worst case, fire. Clean with compressed air, vacuum or brush. The heating power can
be measured, in the electrical connection box, before the heating season. The heater rods need to be
measured to ensure there are no discrepancies in resistance between them. The automatic safety function
needs to be tested and verified.
5.3.6 Cleaning Extract Louvres and Inlet Diffusers
The system supplies treated outdoor air to the building and extracts the used indoor air via the duct system
and diffusers/louvres. Diffusers and louvres are mounted in ceilings/walls in bedrooms, living rooms, wet
rooms, bathrooms etc. Remove diffusers and louvres and wash in hot soapy water if required. Diffusers/
louvres must be put back with their original settings and positions in order not to unbalance the system.
5.3.7 Checking the Outdoor Air Intake
Leaves and other debris can plug up the air intake grille and reduce the unit’s capacity. Check the air intake
grille at least twice a year and clean if necessary.
