Retrotec DM-2A Manual de usuario descargar pdf (Pagina 25)

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©Retrotec Inc. 2012

Hardware connections

 Speed Control – Connects the DM-2 gauge to the fan using an Ethernet style cable.

CAUTION: Never connect the DM-2 (or the fan) to an internet modem/router.

 USB PC – The USB (Universal Serial Bus) port is used to connect the DM-2 to a computer equipped

with Retrotec’s FanTestic software. The computer can assume complete control of the gauge for

data acquisition and control of advanced automated testing.

 LCD Contrast dial (older models) – Adjust to increase or decrease the contrast of the display screen.

Higher contrast settings will increase the display screen legibility in low-light situations, but will

reduce battery life.

 Power – Connects the gauge to an external power source using either the AC power adapter or

power available from the fan (if available).

To connect the DM-2 to a Retrotec fan or variable speed drive box

1. Locate the end of the Umbilical cable (this is the bundle of pressure tubing and Control

Cable) with the shortest length of exposed pressure tubes and Control Cable. Plug the

yellow Control Cable into the Speed Control port on the DM-2.

2. Plug colored tubes into the matching color-coded pressure ports on the top side of the

DM-2. Ensure the tubes are snugly connected to the ports. Depending on the system,

Umbilical cable can contain red, yellow, green, and/or blue tubes.

Note: The Umbilical power cord should not be attached unless the DM-2 batteries are below one

quarter power, and require recharging.

3. From the other end of the Umbilical cable, plug the yellow Control Cable into the port

labeled Control on the Fan Top.

4. Attach the yellow pressure tube to the yellow bulkhead fitting labeled Ref B (fan) on the Fan

Top. If available, the green pressure tube should be attached to the green bulkhead fitting

labeled B (+).

5. Attach the Umbilical power cord to the port labeled DM-2 Power on the Fan Top, if the DM-

2 requires recharging.

6. Pass the red pressure tube through the Door Panel and lay the end down out of the way of

any air flow from the fan.

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Retrotec DM-2A Manual de usuario Pagina 25