Specifications

M GD-100 M anual
32 6109-9000 Rev 3
Operation
State
Description
Idle Only the green light on the panel is on. No gas is
present.
Power
Interrupted
If the green light is off, power to the unit has been
interrupted. Refer to Section 7.
Alarm
Conditions
One-alarm Units:
One or more red lights on the panel turn on. The siren
and the relays operate. This indicates that gas at one or
more sensors is at a level hi gher than the alarm point.
Two-alarm Units:
Low Alarm: One of more yellow lights on the panel turn
on. The audible alarm operates intermittently, and the
low al arm relay operates: this indicates presence of a
low level of gas on one or m ore sensors.
High Alarm: One or more red lights on the panel turn on.
The audible alarm operates continuously, and the high
alarm relay operates: this indicates presence of a high
level of gas on one or more of the sensors.
Resetting
Alarms
On one-alarm units all of which have automatic reset no
user intervention is required. The unit will reset shortly
after the gas dissipates (all one-alarm
systems reset
automatically).
On two-alarm units, low-level alarm conditions will reset
automatically when the gas dissipates. High-level alarm
conditions requi re a m anual reset (by pressing the res et
button). Please note that a high alarm condition can
only be reset 30-60 seconds after the gas clears from
around the sensors.
Audible
Alarm
For the purpose of system maintenance, the audible
alarm may be disabled temporarily on two-alarm units
by using the key-switch. On one-alarm units this is
achieved by setting a jumper on the control unit printed
circuit board. The location of this is position JP1.
Remove the link to disable the alarm.
Fault This indicates a wiring or sensor problem. If these are
in order, the calibration pot may have been adj usted
and may need to be res et. Check with the factory for
instructions.