Retrotec DM-2A Uživatelský manuál stáhnout pdf (Strana 21)

Page 21 of 66

©Retrotec Inc. 2012

The screen will display either "- - - - " or "Hold".To activate Hold

1. Press [Jog/Hold] until "Hold" appears on the screen to freeze the screen and lock the data

currently displayed.

2. Press [Jog/Hold] again until "----" is displayed to unlock the screen.

Jog

 Enables the keypad arrows [] or []to adjust the Set Speed or Set Pressure up or down much

like a traditional remote control.

 The screen will display either "- - - - ", "Jog" or "Hold" (when in Set Speed or Set Pressure mode).

 When not in Set Speed or Set Pressure mode, the DM-2 will not enter Jog mode (but Hold mode

can be activated at any time).

In Set Speed mode

1. Press [Jog/Hold] until "Jog" appears on screen.

2. Press [] or [] to increase or decrease the set speed in 1% increments.

3. Press and hold [] or [] to increase or decrease the set speed in 5% increments.

4. Press [Jog/Hold] again until "----" is displayed to resume normal operation.

In Set Pressure mode

1. Press [Jog/Hold] until "Jog" appears on screen.

2. Press [] or [] to increase or decrease the set pressure in increments of 5 Pa, 0.02 in WC,

or 0.105 lbs/ft

3. Press and hold [] or [] to increase or decrease the set pressure in increments of 10 Pa,

0.04 in WC, or 0.21 lbs/ft

4. Press [Jog/Hold] again until "----" is displayed to resume normal operation.

When numerical input is required, the Jog/Hold key functions to input the number nine.

@ Pressure

The @ Pressure key asks the DM-2 to calculate a result that would be achieved, if the

desired test pressure were measured. The measured pressure will almost always be at

least slightly over, or under, the exact test pressure making it difficult to report results

that are standardised for a specific pressure. The @ Pressure function performs a calculation called

"extrapolation" which analyzes the currently measured results, and displays the results as if the test

pressure was achieved.

Press [@ Pressure] to toggle the DM-2 pressure extrapolation function on and off. The test pressure

that is being extrapolated to is configured in the Setup Menu.

Note: While the DM-2 is capable of extrapolating to any pressure, it is more accurate when the actual

building pressure is closer to the desired extrapolation pressure.

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Retrotec DM-2A Uživatelský manuál Strana 21