Water Mist WM-A1584 User manual

Manual
Manual
Assessed to ISO 9001: 2000
Certificate number 018
e-mail [email protected]
web www.watermistftl.co.uk
tel [phone]
fax [phone]
Water Mist Fire Technologies Ltd
Unit 5, Youngs Industrial Estate
Stanbridge Road, Leighton Buzzard
Bedfordshire, LU7 4QB
WM-A1584 10 AMP POWER SUPPLY
WM-A1584 10 AMP POWER SUPPLY
INSTALLATION, OPERATION
AND MAINTENANCE MANUAL
(CEL Pt. No: 2500206)
NOTE:
It is important to read this manual before commencing installation.

Watermist Fire Technologies
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Contents
1. Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
2. Warning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
IMPORTANT NOTE ON BATTERIES:
. . . . . . . . . . . . . . .
3
3. General Description
. . . . . . . . . . . . . . . . . . . . . . . .
4
4
. Specification
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
5
. Termination List
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
6
. Adjustments and Indications
. . . . . . . . . . . . . . . . . .
6
7
. Installation Procedure
. . . . . . . . . . . . . . . . . . . . . . .
7
Enclosure/Housing
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
Earthing Arrangement.
. . . . . . . . . . . . . . . . . . . . . . . . .
7
Cable Entries
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
9
. Commissioning
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
Commissioning Procedure
. . . . . . . . . . . . . . . . . . . . . . .
8

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Water Mist Fire Technologies
1. Introduction
 ank you for purchasing this 10A Power Supply Unit.  is power supply is designed to the require-
ments of EN54-4.  is power supply will provide the user with many years of reliable service.
2. Warning
IMPORTANT NOTE ON BATTERIES:
DANGER:
Batteries are electrically live at all times, take great care never to short circuit the battery
terminals.
WARNING:
Batteries are often heavy, take great care when lifting and transporting batteries. For
weights above 24kg, lifting aids should be used.
WARNING:
Do not attempt to remove the battery lid or tamper with the battery internal workings.
Electrolyte is a highly corrosive substance and presents signifi cant danger to yourself and to anything
else it touches. In case of accidental skin or eye contact, fl ush the aff ected area with plenty of clean,
fresh water and seek immediate medical attention.
VRLA batteries are “low maintenance” requiring no electrolyte top-up or measurement of specifi c
gravity. Always refer to the battery manufacturer’s data.
WARNING:
If required, clean the case of the battery with a cloth that has been soaked or dampened
with distilled water. Do not use organic solvents (such as petrol, paint thinners, benzene or mineral
spirits) and other materials can substantially weaken the case.
WARNING:
Avoid charging the batteries in fl oat/standby applications outside of the range quoted by
the battery manufacturer.
WARNING:
Do not incinerate batteries. If placed in a fi re, the batteries may rupture, with the po-
tential to release hazardous gases and electrolyte. VRLA batteries contain substances harmful to the
environment. Exhausted batteries must be recycled. Return them to the battery manufacturer or take
them to your Council tip for appropriate disposal.
 e volt-free contacts provided on the WM-A1584 must not be used directly to switch any voltage
which exceeds 60v AC @ 0.5 Amps or 24v DC @ 1 Amp.
 is equipment requires a 230v AC supply. All installation work should be carried out in accordance
with the recommendation of BS5839 Part 1 and the current edition of the IEE regulations by suitably
qualifi ed and trained personnel.
 is power supply is suitable for indoor use only and must be installed in a dry and clean area.
 is power supply must be earthed.

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3. General Description
 e WM-A1584 10 Amp power supply has been designed to meet EN54-4.
 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.  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.
 e power supply has 9 LED status indicators to indicate what type of fault has occurred on the power
supply.
 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.

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Water Mist Fire Technologies
4. Specification
Mains Input
230v A.C +10%, -6%
Frequency
50Hz
Maximum Input Power
363VA (power factor corrected)
Control Supply Output
Voltage 28v DC +/- 4%
(current 10 amps max)
5/8 Volt Supply Output
1
5/8v DC @ 3 Amps max
Battery Charger Output
27.5v DC (adjustable from 22.5v to 29v via VR1) temperature compensated
(-10°C to +50°C).
Over Current Protection
Control Supply: Threshold @ >105% of rated output current (autorecovery).
5v DC output
1
: Foldback limited.
Battery Charger: 3 Amps.
Fuse Ratings
Mains: 5 Amp Antisurge (T) 5 x 20mm
Battery: 10 Amps Fast Blow 32mm (1.25”)
Battery Shut Off Voltage
Less than 18v DC
Common Fault Output
Open collector output (active high)
2
Mains Fault Output
Open collector output (active high)
3
Note 1:
 e WM-A1584 has a 5v DC output and its associated fault indication, labelled as 5/8v REG. It is possible for the 2500206
to produce a 8v DC output by replacing R27 with a 2k7 Ohm 1/4W resistor.
Note 2:
When the respective fault is detected by the WM-A1584 a delay of 3 seconds is initiated and if the fault still exists after this
delay period the Common Fault output (CF) is activated.
Note 3:
When a fault associated with the Mains input is detected by the WM-A1584 a delay of 2 seconds is initiated and if the fault
still exists after this delay period the Mains Fault output (MF) is activated.
5. Termination List
BATT+ Battery charger terminal 27.5 volts, 2 amps max. two terminals, 2.5mm
2
cable max.
BATT– Common 0 volt terminal, two terminals, 2.5mm
2
cable max.
THERM  ermistor input, two terminals, 2.5mm
2
cable max.
Mains (LNE) 2.5mm
2
cable max.
29v DC INPUT
+ Two terminals, 2.5mm
2
cable max.
– Two terminals, 2.5mm
2
cable max.
OV Common O volt output, two terminals, 2.5mm
2
cable max.
28V Common 28 volt output @ 10 Amps max, two terminals, 2.5mm
2
cable max.
5V Common 5 volt output @ 3 Amp max, two terminals, 2.5mm
2
cable max.
CF Power supply Common fault output, open collector, one terminal, 2.5mm
2
cable max.
MF Mains Fault output, open collector, one terminal, 2.5mm
2
cable max.
P Common pole of the volt-free change over relay, one terminal, 2.5mm
2
cable max
C
4
Normally closed during fault free condition, open circuit during fault detection, one
terminal, 2.5mm
2
cable max.

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O Normally open during fault free condition, closed when fault is detected. One terminal,
2.5mm
2
cable max.
Note 4:
Contacts are normally energised.
Note 5:
 e volt-free SPCO relay has contacts which are rated to 1A @ 24v DC.
6. Adjustments and Indications
Indicator
Function
Colour
Comments
PROC
Processor Fault
Amber
Flashes whenever the processor fails to update
the external hardware watchdog and whenever a
memory error has been detected by the onboard
processor.
BATT
Battery Fault
Amber
Flashes whenever the battery input has a short
circuit, single battery connected, or battery
voltage rises above 29.5v DC.
L/BATT
Low Battery Fault
Amber
Flashes whenever standby power (battery) falls
below 19v DC.
CHARGE
Charger Fault
Amber
Flashes whenever battery is disconnected, battery
voltage is above intended charge voltage.
EARTH
Earth Fault
Amber
Flashes whenever a earth fault is detected.
5/8V
Regulated 5/8V Fault
Amber
Flashes whenever 5v DC regulator output is
above 9v DC and below 4v DC.
MAIN
Mains input fault
Amber
Flashes whenever the DC input from the switch-
mode unit falls below 28v DC or above 30v DC.
THERM
Thermistor Fault
Amber
Flashes whenever Thermistor input resistance
falls outside its resistance range (800 Ohms to
52kOhms)
PSU OK
PSU Healthy
Green
Illuminates whenever unit is not displaying any
detected faults. Turns off whenever charger is
checking the presence of the battery.
Table 1. Description of Fault Indicators and their functions on the WM-A1584
User Control
Designation/Location
Comments
EARTH CAP DISABLE
JP1
When link is removed the 10uF Earth Ca-
pacitor is disabled.
EARTH FAULT DISABLE
JP2
When link is removed Earth faults are
disabled.
TEST LAMPS PROC FAULT
RESET
SW1
When pressed all the amber fault LEDs il-
luminate except for PROC fault. Also clears
the Memory Checksum Fault Flag and
clears the PROC fault LED.
RESET PROC
SW2
Resets the on board processor
VSET
VR1
Manual adjustment for Battery Charge volt-
age.
Table 2. Description of the User Controls and their function on the WM-A1584

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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.
 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.  e
maximum temperature range is –10°C to +50°C @ 20% – 90% humidity.  e p.s.u incorporates a
switchmode power supply that has a thermostatically controlled cooling fan.  erefore, ensure that
adequate ventilation is provided at all times over the temperature range stated.
Enclosure/Housing
 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.
 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.
 e incoming Mains primary earth conductor must be connected to the Earth Stud on the p.s.u chas-
sis.  is can be achieved be terminating the earth lead with a ringed earth connector with an inner
diameter of approximately 4mm.  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.

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9. Commissioning
 e following procedure is to be followed to safe guard equipment and prevent personal injury.  e
equipment uses dangerous voltages and stores electrical energy, therefore commissioning and testing
must be carried out by qualifi ed personnel.
All electrical installation and testing must be carried out in line with BS7671: 1992.
Commissioning Procedure
1. Carry out visual inspection and carefully check for any damage, which may have occurred dur-
ing transit.
2. Equipment should fi rst be checked to ensure that any connections, which may have become
loose during transit are tightened.
3. Ensure that all external cables to be connected to equipment are suitably rated. Also check that
all cable glands are correctly earthed.
As a minimum:
i) Carry out a visual inspection of the installation for compliance to the regulations and is
free of damage.
ii) Check the protective conductor continuity.
iii) Measure insulation resistance
iv) Verify the polarity of the conductors.
v) Measure the earth loop impedance.
vi) Test the operation of any ELCBs.
(refer to BS7671 for full details)
4.
Please note megger test equipment is not permitted to be used while connected to the power
pack, otherwise will cause serious damage to internal components.
5. As the equipment relies primarily on natural convection for cooling purposes, it is important
that the enclosure is checked/sited in a position with a free fl ow of air.  is also applies to equip-
ment fi tted with cooling fans.
6. Connect the A.C. mains supply to the mains terminal, making sure to connect to the input volt-
age stated in manual. Connect the earth connection to the earth stud provided and check all
other earth points are fi rmly connected.
7. Before connecting any other external connections remove the mains fuse. Switch on the A.C.
mains supply and check supply voltage and polarity are correct. Replace the fuse and check
that the power supply unit indicates the correct indications as per the information contained in
that the power supply unit indicates the correct indications as per the information contained in
this document. Check power supply D.C. output voltages are correct as per the information
this document. Check power supply D.C. output voltages are correct as per the information
contained in this manual.
8. Caution to be exercised when connecting batteries, ensure correct polarity is observed, ensure
correct battery type (2 x 12v sealed rechargeable lead acid) is used.
 ere are no user serviceable parts and no user functions. All maintenance and repair work must only
be carried out by authorised and fully trained How Fire/C.E.L personnel.
 e occurrence of a PSU fault should be indicated at access level 1 (applicable to Fire Alarm System
applications). If a power supply fault is indicated then call the authorised Service/Maintenance
Engineer.