Operation and Maintenance Documentation GUARD v202301
ATTENTION!
PTC heaters power supply 3x400V/50Hz or 3x400V/60Hz
min. 5 x 2,5 mm for G100E; (B16)
min. 5 x 4 mm for G150E; (B20)
min. 5 x 6 mm for G200E; (B25)
8.8.2 Without DOOR SWITCH
In the MASTER curtain between the L-NC terminals, replace the factory-made fuse (C 3.15) with C 6.3.
9. OPERATION AND MAINTENANCE
The engine and fan of the GUARD air curtains are maintenance-free devices but regular check-ups are advised, especially the
motor and bearing (the 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 of all dirt/impurities off. Before the start of the heating period, the heat
exchanger is advised to be cleaned with compressed air directed to the air outlets; there is no need for dismantling the device.
Pay special attention when cleaning the exchanger’s fin due to the high possibility of damaging them. If the fin is bent use a
special tool. If the device has not been used for a longer period, unplug it before the next use.
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 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.
ATTENTION!
Any repair and maintenance work must be conducted with the power off and the heat input disconnected.
Only suitably qualified staff well acquainted with the safety regulations concerning handling an electrical device
must be employed when the device is being installed, started, and operated
In the event of a coolant leak, when the water system is under pressure, any repairs of the leakage are strictly
prohibited.
Any repairs to the device must be conducted only if the device is disconnected from the power supply.
If the device being operated gives a metallic clatter, or 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
SONNIGER Authorized Service immediately.
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