Water Mist WM-A1584 Installation, Operation And Maintenance Manual - page 4
Watermist Fire Technologies
Page 4
3. General Description
Th e WM-A1584 10 Amp power supply has been designed to meet EN54-4.
Th e power supply requires a 230volt AC input and provides three separate outputs of 28volts DC, 5
volts DC and a temperature compensated 27.5 volt DC (fl oat) output for battery charging. Th e 28
volt output is derived from the DC output of the switchmode power supply, whilst the 5v DC output
is derived via a regulator on the WM-A1584 controller board. In the event of Mains failure, the power
supply will automatically change over to the standby batteries.
Th e power supply has 9 LED status indicators to indicate what type of fault has occurred on the power
supply.
Th e power supply consists of a steel mounting chassis with the WM-A1584, a switchmode power sup-
ply and a fused mains input terminal block.