Water Mist WM-A1584, Инструкция по установке, эксплуатации и обслуживанию, Страница: 7 / 9

Page 7 Water Mist Fire Technologies
7. Installation Procedure
WARNING: Please read this section completely before commencing installation.
Prior to commencing installation of the power supply, ensure that adequate precautions are taken
against static damage to the sensitive electronic components on the WM-A1584 board. You should
discharge any static electricity that you may have accumulated by touching a convenient earthed ob-
ject.
Th e power supply unit should be located in a clean, dry position which is not subject to shock or
vibration and at least 2 metres away from Pager systems or other radio transmitting equipment. Th e
maximum temperature range is –10°C to +50°C @ 20% – 90% humidity. Th e p.s.u incorporates a
switchmode power supply that has a thermostatically controlled cooling fan. Th erefore, ensure that
adequate ventilation is provided at all times over the temperature range stated.
Enclosure/Housing
Th is type of power supply can be housed within an R3 rack enclosure (forming part of a system) or a
standalone enclosure which can incorporate 2 x 12v rechargeable Lead Acid Batteries.
Th e power supply should be mounted on to a metal chassis or back plane using the 5 off M5 x 20mm
bolts provided. Figure 1 provides information relating to the dimensions and location of the fi ve fi xing
holes. Drill 5 off 5.5mm diameter fi xing holes into the intended backplane/chassis using drill. Each of
the fi ve bolts should be spaced with the M5 x 6mm spacers provided.
Earthing Arrangement.
Th e incoming Mains primary earth conductor must be connected to the Earth Stud on the p.s.u chas-
sis. Th is can be achieved be terminating the earth lead with a ringed earth connector with an inner
diameter of approximately 4mm. Th is should be secured to the chassis earth stud with the M3 nut and
washer provided. Additional earth connections are also made to the power supply Mains Filter and to
the Earth connection (FG) of the switchmode power supply.
Figure 1. Earthing arrangement for the 10 Amp Power Supply Unit.
Cable Entries
Gland the installation wiring into the enclosure using the cable entry points as applicable.
Connect the 230v AC input to the Mains Terminal Block as shown in Figure 1. A Mains cable grip is
provided on the p.s.u chassis which utilises a tie wrap arrangement.