Table 1-4. Factory-Programmed Area Alarm Module Setpoints
a. The Area Alarm Module for nitrogen is set at the factory according to
NFPA 99 standards. Due to the variations between NFPA 99 and CAN/CSA-Z305.1-92, Canadian
facilities need to set the nitrogen between 160 psig (1103 kPa) and 180 psig (1241 kPa).
b. Waste Anesthetic Gas Disposal (WAGD).
c. NFPA 99 does not specify a minimum setpoint, however the limit is factory-set to 2.0 "Hg
(6.8kPa).
The Area Alarm Modules remotely monitor the actual line pressure or vacuum
by using gas-specific transducers. The pipeline pressure or vacuum continuously
displays on each Area Alarm Module unless there is an alarm error. In that case,
the error code displays.
When an alarm occurs, the green Normal LED goes out, and either the red High
LED or the red Low LED lights, the pressure or vacuum reading flashes on the
display, and the alarm sounds. If the Network Communications Board is
installed, the Area Alarm Module sends the alarm message and reading to the
Master Alarm.
When an error occurs in the Area Alarm system, the error code displays, and the
alarm sounds.
Gas Type
Standard Setpoints
(NFPA 99)
Maximum Setpoints Calibrated Scale
Oxygen
40 psig to 60 psig
(276 kPa to 414 kPa)
40 psig to 70 psig
(276 kPa to 483 kPa)
0 psig to 200 psig
(0 kPa to 1379 kPa)
Medical air
40 psig to 60 psig
(276 kPa to 414 kPa)
40 psig to 70 psig
(276 kPa to 483 kPa)
0 psig to 200 psig
(0 kPa to 1379 kPa)
Nitrous oxide
40 psig to 60 psig
(276 kPa to 414 kPa)
40 psig to 70 psig
(276 kPa to 483 kPa)
0 psig to 200 psig
(0 kPa to 1379 kPa)
Oxygen/Carb
on dioxide
40 psig to 60 psig
(276 kPa to 414 kPa)
40 psig to 70 psig
(276 kPa to 483 kPa)
0 psig to 200 psig
(0 kPa to 1379 kPa)
Carbon diox-
ide
40 psig to 60 psig
(276 kPa to 414 kPa)
40 psig to 100 psig
(276 kPa to 689 kPa)
0 psig to 200 psig
(0 kPa to 1379 kPa)
Helium
40 psig to 60 psig
(276 kPa to 414 kPa)
40 psig to 70 psig
(276 kPa to 483 kPa)
0 psig to 200 psig
(0 kPa to 1379 kPa)
Nitrogen
a
128 psig to 192 psig
(883 kPa to 1324 kPa)
140 psig to 200 psig
(965 kPa to 1379 kPa)
0 psig to 200 psig
(0 kPa to 1379 kPa)
Vacuum
12 "Hg (41 kPa)
minimum setpoint
12 "Hg (41 kPa)
minimum setpoint
0 "Hg to 30 "Hg
(0 kPa to 102 kPa)
Evacuation/
WAGD
b
Varies with system
specifications
2.0 "Hg (6.8 kPa)
c
0 "Hg to 30 "Hg
(0 kPa to 102 kPa)
MedPlus TotalAlert® Alarm Network Operation and Maintenance Manual (205728) Page 1-31
Detailed Component Descriptions
Chapter 1: Introduction
1
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