16 | SmithsEP.co.uk | Issue 001 - April 2020
www.sonniger.com
16
Technical manual Ostro air curtain v201709
10. OPERATION AND MAINTENANCE
The engine and fan of the air curtains are maintenance-free devices but regular check-ups are advised, especially motor and
bearing (fan’s rotor should rotate freely, free from any axial and radial throws/run-outs and undesired knocks/rattles.
The heat exchanger requires systematical cleaning to remove all dirt and impurities. It is advised that after a period of shut down of
the air curtain, prior to the start of the heating season, that the device should be cleaned with compressed air to remove debris
from the air outlets. There is no need to dismantle the air curtain to do this. It is also advised that the heat exchanger should be
cleaned but please be aware that the aluminium fins are delicate and can become easily damaged. If the fins are bent then a
special tool should be used to repair them.
The heat exchanger is not equipped with any fire protection device. The heat exchanger may be damaged if the room temperature
goes below 0°C; anti-freeze liquid must be added to the water circulation/system. Anti-freeze liquid must be appropriate for the
material the exchanger
which is made of copper,
as well as other elements of the hydraulic system/circulation. The liquid must be
diluted with water accordingly to the manufacturer’s recommendation.
11. TROUBLESHOOTING AND TECHNICAL PROBLEMS
Possible problems and solutions are shown below. To eliminate a problem encountered contact the
Authori
s
ed Service.
Fault, symptoms
Potential causes
Solutions
No heating, fan not operating
No power supply
Check the power switch Check the
power supply Check the power cable
-
if it is damaged - replace the cable
Damage to the fan
Replace the motor
Damage to the switches on control
panel
Check the switches
-
if are damaged
-
replace
Heating medium leakage
- leakage on joints with hot water
supply system
-leakage in collector
Loss of tightness
Sealing supply system; repairing the
heat exchanger
Heat output drop
Temperature of the heating medium
differs from the required one
Contaminated heat exchanger’s surface
Restore the temperature of the heating
medium
Clean the surface of the heat
exchanger
NOTICE !
Any and all repair and maintenance works must be conducted with the power off and the heat input
disconnected.
Only suitably qualified staff well acquainted with the safety regulations concerning handling with an electrical
device must be employed when the device is being installed, started and operated
In the event of coolant leak, when the water system is under pressure,
any repairs of the leakage are strictly
prohibited.
Any repairs of the device must be conducted only if the device is disconnected from the power supply.
If the device being operated gives metallic clatter, vibration or the level of noise is increasing, check if the
mounting of the fan has not become loose – in case of any problems contact the installer of the device or
the Authori
s
ed Service immediately.
