1. Run a minimum of 16 gauge, 3-conductor cable, plus ground (4
wires) to the first junction box from a power supply and between
all smoke alarms that are to be connected together. Use UL
Listed Class 1 wire.
2. Make wire connections to the supplied plug-in connector as
follows: black to black, white to white, 3rd conductor to the red/
yellow wire. The red/yellow wire should be stripped to make the
connection. Connect ground wire between metal outlet boxes.
3. Place smoke alarm up to mounting plate, rotating it clockwise
until unit firmly snap locks into place. Keep smoke alarm parallel
to mounting plate so upper and lower tabs on plate seat
correctly into smoke alarm.
CHECKOUT & TROUBLESHOOTING
1. Turn test knob to NORMAL position and install battery, then
supply house power to smoke alarm. The red indicator light
should flash every 15-30 seconds, showing smoke alarm is
operating properly.
2. If red light is not flashing or the green LED is not on:
a. Check that the battery is installed.
b. Check the connector plug and wire connections. NOTE: Be
sure you turn off power before checking wire connections.
c. If power supply and wiring check out, but red light does not
flash or the green LED is still off, return the smoke alarm to
the manufacturer. See TO RETURN A SMOKE ALARM.
d. When powering up smoke alarms in a tandem installation and
all smoke alarms sound immediately, inspect all smoke
alarms for those with an illuminated red indicator light.
These will be the trouble units.
3. Testing with the Test Knob:
a. Rotate test knob counter-clockwise to the TEST 1 position
and wait up to 20 seconds for smoke alarm to sound. If
smoke alarm does not sound after 20 seconds, return smoke
alarm for service.
b. After successfully testing smoke alarm, return test knob to
NORMAL (non-test) position and wait 20 seconds for smoke
alarm to stop sounding.
NOTES ON TANDEM INTERCONNECTING MODELS
DO NOT connect MasterGuard Smoke Alarms to other
manufacturers' smoke alarms.
No more than 12 MasterGuard models 400T may be connected
in tandem.
No more than 6 MasterGuard models 400TR may be connected
in tandem.
All units connected in tandem MUST get their power from the
same circuit, that is, all smoke alarms in tandem must be
controlled by the same fuse or circuit breaker.
After installation to verify proper working conditions all horns must
sound in this system.
IMPORTANT WARNING:
Failure to observe any of the conditions set forth may cause
system malfunction and damage to the smoke alarm.
BATTERY INSTALLATION
1. Remove smoke alarm from mounting plate by rotating
counter-clockwise.
2. Remove AC power connector and unsnap power leads from top
of old battery. Snap new battery onto snaps and reinsert battery
through hole in back of smoke alarm. WARNING: Units with
battery back-up will not provide power or transmit an alarm to
AC only units in the event of an AC power faiure. All battery
back-up units in tandem with good batteries will operate normally
during an AC power failure for a minimum of 24 hours.
3. Use only Duracell MN 1604 battery with the 400 Series smoke
alarms.
MOUNTING: PLATE & SMOKE ALARM
1. Lace the connector through the provided mounting plate and
secure the plate to the junction box.
2. Plug the wire connector into the smoke alarm base.
c. To test smoke alarm for high sensitivity, turn test knob clock
wise to TEST 2 position. Smoke alarm should remain silent.
d. Make sure to return test knob back to its normal position.
e. If your smoke alarm sounds during this test it means the
smoke alarm's sensitivity has become too high and may cause
false alarms.
f. This could mean your smoke alarm is dirty and should be
cleaned as described in the maintenance procedure below.
g. If the smoke alarm continues to alarm, for TEST 2 position
following cleaning, return it to MasterGuard for service.
h. To check for proper smoke entry into your smoke alarm's
sensing chamber, MasterGuard recommends using the Home
Safeguard Smoke Alarm spray.
i. This test should be performed once a year and should be
sprayed from a distance no closer than 12 inches from the
smoke alarm.
MAINTENANCE
After your smoke alarm has been in operation for a period of time
or if it was installed prior to the completion of all building
construction, your device may have become more sensitive due to
dirt build-up in the smoke alarm's optic sensing chamber which could
cause nuisance alarms or could cause activation from small amounts
of smoke build-up.
If this should occur, following this simple washing procedure will
restore your smoke alarm back to its original condition.
For further information, regarding frequency of cleaning and
testing, refer to NFPA 72, NFPA, Batterymarch Park, Quincy, MA
02269.
IMPORTANT: Failure to follow full cleaning instructions could
result in damage to this smoke alarm. DO NOT remove all
smoke alarms at the same time for cleaning.
Pg. 4-5
LIMITATIONS: A maximum of 12 smoke alarms of the 400T Series
may be connected together. Do not exceed 125 feet between each
unit. Do not exceed 1125 feet between first and last smoke alarm.
NOTE: A maximum of six (6) smoke alarms of model 400TR may be
tandem interconnected.
Wire used for interconnection shall be in accordance with
article 760 of the latest edition of National Electrical Code (NFPA 70)
and must not exceed a resistance of 10 ohms.
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