Can you tell about the UPS UPS Luxeon UPS-2000ZX

I have such a Luxeon UPS-2000ZX UPS (1200W), pure sine wave, external battery. Question, is it possible to operate it if you put it on its side? (I know that there is a ventilation grill on the side, it will not be closed by anything and the air flow will not be disturbed) I wonder if I will disrupt the operation of the electronics or what else is there in it if it does not stand on its legs?
Specifications:

Model: Luxeon UPS-2000ZX;
Rated power, 220 Volts - 2 (1.2) kVA (kW);
Voltage regulator;
Input voltage range - 145-270 Volts;
Output voltage - 220 ± 7% Volts (correct sine wave), frequency 50 ± 0.5 Hz;
Battery voltage - 24 (2 batteries) - supplied separately;
Maximum battery charge current - 14 Amperes;
Nominal charging current of the storage battery - 4 Amperes;
Microprocessor control of work;
Switching time network-battery, no more - 5 ms;
LED indicators for operating modes - mains operation, battery operation / battery charging (flashing) and battery is discharged;
Protection against voltage fluctuations, overvoltage and undervoltage.
Battery discharge protection - 10 ± 0.5 Volts (shutdown);
Overheating protection - 60 ± 5 ° C (shutdown);
Short circuit protection - fuse;
Forced cooling fan;
Battery discharge warning - 10.5 ± 0.5 Volts (sound signal and LED indicator);
Mains connection - power cord with Euro plug;
Connecting to the storage battery - 2 cables to the storage battery;
Load connection - two sockets;
Black color.
Dimensions (WxHxD) - 195x335x455 mm;
Weight - 23 kg;
Black color;