Section III
Operation
006-0007129 10/12/2018
Rev B
25 of 60
UPS-1500 3-Phase Guide
www.synqor.com
Cooling System
The SynQor UPS-1500 Series products are cooled by fans that draw air into the intake below
the battery pack on the front panel and exhaust through two fan ports on the rear panel. Care
should be taken to ensure there is no airflow obstruction, either at the front air-intake or the
rear exhaust. Care should also be taken to avoid obstructing the fan blades.
The speed of the cooling fans is automatically controlled by the UPS internal control to provide
adequate cooling while extending the life of the fan bearings. Under low ambient temperatures
and/or low UPS output power the fans will be driven at a low speed. If the ambient temperature
and output power are such that the UPS cannot otherwise maintain its specified maximum
temperature for its internal circuitry, the fans will momentarily be driven at a speed that exceeds
their rated long-term running speed. There is a LED on the front panel of the battery pack that
indicates the speed of the fans.
If the ambient temperature is low enough (for the level of power being delivered to the load),
the fans may not be “ON”. This is not a malfunction. It is done to preserve the life of the fans.
If the fans are “OFF”, check the Fan Service Required LED on the front panel of the battery
pack. If the LED is GREEN, the fans are functioning properly and simply are not needed under
the present conditions.
The fans are weather-proof and water-proof.
The UPS has two fans to provide redundancy for these exposed, moving components. With only
a single operating fan the UPS is still able to deliver 100% rated power at an ambient temperature
as high as 40
o
C, and it is able to deliver 80% of its rated power at an ambient temperature as high
as 55
o
C.