Section III
Operation
006-0007068 UPS-1500-S-2S Guide
Rev E
22 of 60
09/10/20
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 it out the two fan ports on the rear panel. Care
should be taken to ensure there is no obstruction to this airflow, either at the front intake or the
rear exhaust ports. Similarly, care should be taken to avoid obstructing the fan blades.
The speed of the cooling fans is automatically controlled to provide adequate UPS cooling while
extending the life of the fan bearings. Under low ambient temperature 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 an 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 it is GREEN, the fans are functioning properly and simply 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 50
o
C.
