Specifications

M GD-100 M anual
6109-9000 Rev 3 31
Section 5. Operation and Stabilization
When power to the unit is switched on, there is a 3-minute delay before
the system activat es. This allows the sensors to warm up to the correct
temperature for gas detection.
• On a t wo-alarm unit the green light on t he alarm panel comes on
after the del ay, indicating that the system is ready.
• On a one-alarm unit the green light comes on immediately.
NOT E: Th e 3-minute delay is set by JP1 in single alarm units
only. For 2 alarm units, the delay is always enabled.
When a unit has been off or stored for a long time the stabilizing period
may be longer t han 3 minutes. After the 3 minutes has expi red, alarms
may activate. You may deacti vate the siren until stabilization is complet e.
(Use the key switch on two-alarm units. Remove link on j umper JP1 in
the case of one-alarm units).
After t he MGD-100 has been installed in accordance with the installation
instructions, the MGD-100 system is ready to monitor the chosen air
space and detect gas leaks.
Each of the rem ote s ensors has a green light to indicat e that power is
present.
To minimize false alarms, the system has a built in delay enforced
between the arrival time of gas at the sensor unit, and the time when the
alarm occurs. For one-alarm units, this delay is approximat ely
3 minutes. For two-alarm units, this delay is 20-25 seconds before a low-
l e vel alarm, and 25-30 seconds before a high-le vel alarm. This delay
can be deacti vated in a one-alarm unit by moving t he link at position JP1
to the off position.