AERMEC TDA Manual De Instalación, Uso Y Mantenimento página 40

Unit disposal
The components of the TDA range have
been designed to guarantee continual ope-
rations. The duration of some main parts
depends on the maintenance to which it
has undergone.
At the end of their useful life, the TDA
range units must be disposed of in accor-
dance with the current laws in force.
If the unit is to be disposed of, the ope-
Diagnosis and fault solving
PROBLEM
1. INSUFFICIENT
AIR FLOW RATE
3. NO AIR FLOW
RATE
4. ABNORMAL
NOISE
4. MOISTURE
CARRYOVER
5. REQUIRED
TEMPERATURE NOT
ACHIEVED
Selection, installation, use and maintenance manual
ration must be carried out by specialised
personnel.
The main materials that make up the
units of the TDA range are:
• galvanised steel (panels, fans, conden-
sate drip tray);
• aluminium sheet or aluminium alloy
(coil fins, grilles, electric motor frame);
• copper (coil pipes, winding of the elec-
CAUSE
1. Blocked filters
2. Blocked coils
1. Power supply off
2. Electric motor burnt out
1. Excessive flow rate
2. Fan bearings worn or defective
3. Foreign bodies on the fans' impellers
1. Drain-trap blocked
2. No drain-trap or incorrectly made
1. Temperature of the inlet air on coil outside the
envisaged limits
2. Air in the water coils
3. Insufficient water flow rate in the water coils
4. Insufficient coil inlet water temperature
5. Dirty coil unit surface
REMEDY
- Clean the filters
- Clean the coils
- Check the presence of power
- Replace the electric motor
- Reduce the flow rate
- Replace bearings
- Clean the impellers
- Clean drain-trap
- Correctly prepare a drain-trap as indicated in
this manual
- Check the water temperature
- Bleed the coils
- Increase the water flow rate
- Check the water temperature
- Clean the surface of the pack
40
Air conditioning unit -
tric motors);
• polyurethane foam (sandwich panels
insulation).
TDA range