Retrotec DucTester 341 - Manual (Page 23)

Page 23 of 83
©Retrotec Inc. 2014
6. Prepare for the Duct Leakage Test
6.1 Unpack, connect the gauge to the DucTester
Prior to beginning any test, it is important to verify that the system is functioning properly. Check that
the batteries have enough power, and that the fan can be controlled either automatically or manually.
6.2 Charge the gauge
The batteries should be charged when you first get your gauge but we advise you to leave your gauge on
the charger overnight to make sure. These rechargeable batteries are just like the ones used in Smart
Phones and will save you about $300 per year over old style alkaline disposable batteries, so it’s worth
having a charger with the equipment and one in your vehicle. Battery life is about 11 hours on a single
charge with WiFi disabled. Battery life is about 9 hours on a single charge with WiFi enabled.
The batteries will charge more quickly if the DM32 is turned off and when plugged to a wall outlet
(instead of to a computer). A large battery icon (shown below) will be displayed on the screen when
your battery is receiving a charge. When plugged into your computer, the battery will not get drained
but will not charge up completely either. Running FanTestic software is better done wired for this reason
as well as because it’s a faster more stable connection.
Figure 9: The screen of the DM32 while the batteries are being charged.