Scott QuadScan II 7400, Operation & Maintenance Manual, Page: 9 / 121

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Quick Start
1. Install per the physical installation information found in this manual. Refer to Installation drawings for
mounting requirements.
2. The 7400 can be powered with either 100-270VAC or 24VDC. Refer to Electrical drawings for information
about the power input wiring. Wire according to National Electric Code
Do not apply power until you have finished wiring the complete system, including
transmitters.
3. Connect your gas transmitter(s) to the 7400. Refer to Figure 7 . (No relay contacts should be hard wired
into your system at this stage)
4. Touch the Setup key to enter the programming mode. Use the Up or Down key to program channels 1
through 4. Press the ENTER key once the correct channel is in “Setup” mode. This is seen on the LCD
display next to the channel identification number.
5. Follow the menu trees menus [refer to “Setup & Programming” for complete details]. Unless your unit was
pre-configured for your specific application, refer to “Factory Default Settings” for factory default values. To
save your programming and finish press the Escape key until SAVE SETTINGS? is displayed. Press the
ENTER key and this will complete your programming. When programming other channels, each channel
must be completely programmed before you can proceed to another channel.
Model 7400 Function Keys
6. Connect common relays [refer “Terminal Block Arrangement” figure for connections]. Refer to “Alarm and
Relay Operation” for further details on relay functionality.
7. If optional remote relays are to be used, connect per the “Optional Remote Relays” section of this manual.
8. For problems in startup, refer to the “Troubleshooting” section of this manual. Otherwise contact your local
Scott Health & Safety representative or the Scott Customer Support team.