warm air at a temperature of between 65
°
C and 80
°
C.
(This requirement can be met by some domestic hair
dryers).
Proceed as follows:
(1). Switch on the warm airflow and check that
temperature is correct and stable.
(2). From a distance of several inches, direct the
airflow at the guard protecting the thermistor. The
detector should alarm within 30 seconds.
(3). Upon alarm immediately remove the heat source
and check that the red LED of the detector is
illuminated. Reset the detector from the control
panel.
(4). If detector fails to go into alarm mode within 30
seconds it is too insensitive and needs to be
returned to the distributor for servicing.
(5). After testing, check that the system is set for
normal operation and notify the appropriate
authorities that the testing operation is complete
and the system is active again.
CAUTIONS
This heat detector is particularly designed to
initiate and
activate
emergency action, but will do so only when it is
used in conjunction with an authorized fire alarm system.
This detector must be installed in accordance with NFPA
Standard 72.
The purpose of design of heat detectors is meant to
protect property, not life.
The heat detectors do not provide
early warning of fire and cannot detect smoke, gas,
combustion particles, or flame. They will alarm when
temperature at the heat detector reach 57
o
C (135
o
F) or
above. Given the rapid growth of certain types of fires, heat
detectors cannot be expected to provide adequate warning
of fires resulting from smoking in bed, inadequate fire
protection practices, violent explosions, escaping gas, and
improper storage of flammable liquids like cleaning solvents,
other safety hazards, or arson.
Heat detectors do not always detect fires because the
fire may be a slow-smoldering, low-heat type (producing
smoke), or because they may not be mean where the fire
occurs, or because the heat of the fire may bypass them.
Heat detectors will not detect smoke, gas, flames, or
combustion particles.
Heat detectors are components in professionally installed fire
alarm systems.
They will not function if they have been
improperly wired into the fire alarm system or if power to
them is disconnected for any reason.
Heat detectors cannon last forever.
They should be tested
and maintained following the instructions in this manual. To
be safe, they should be replaced after they have been
installed for ten years.
Refer to NFPA 72 for application.
CAUTION: DO NOT ATTEMPT TO DISASSEMBLY OF THE
FACTORY SEALED HEAT DETECTOR. THIS ASSEMBLY
IS SEALED FOR YOUR PROTECTION AND IS NOT
INTENDED TO BE OPENED FOR SERVICING BY USERS.
TO OPEN THE DETECTOR HEAD WILL VOID THE
WARRANTY.
SPECIFICATION
Model
2/4
wire
Voltage
DC
Standby
Current
(Max.)
Alarm
Current
(Max.)
Surge
Current
(Max.)
Star-Up
Time
(Max.)
Permissible
Current
(Max.)
Frequency
Alarm contact
Base model
PLH-24V
2
15~35V
A
70mA
120 A
60 Seconds
80mA
2 Seconds
—
P/N870302
88
The detector to be tested should be subject to a flow of
HEATSENSORTESTING
