Mastercool 52246 COMPACT SUBCOOL_SUPERHEAT CALCULATOR - Manual (Page 3)

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Figure 1
3. Remove the back of the unit taking care that the PC board does
not fall out. (Figure 2)
Figure 2
NOTE: Putting a rubber band around the case and PC board will
help keep it in place.
4. Plug a USB cable into USB Port. (See Figure 2)
NOTE: If the ribbon cable pulls out of its clamp, lift up the brown top
of the clamp. (Figure 3) Insert the ribbon cable dark contacts down.
Push the top of the clamp down to re-clamp the cable.
Figure 3
Install the Refrigerants
1. Make sure your computer has a connection to the internet.
(The program downloads refrigerant files from our website.)
2. Start the “Mastercool_Refrig._Downloader” program. After the
program starts, the drop-down window next to “Select Device:”
will be blank if the 52246 is not plugged in.
3. Carefully install the battery on the 52246.
4. While preventing the PC board from falling out of the case, turn
the 52246 on.
5. After the “R” starts blinking, press ENTER.
NOTE: It does not make any difference which refrigerant is
displayed.
6. Connect the USB cable to a USB port on the computer. Click on
“UPDATE DEVICE LIST”. The window next to “Select device:”
will have something like “0001” in it.
7. Click on “VIEW AVAILABLE REFRIGERANTS ON WEB SITE” to
see the list of available refrigerants.
8. In the window under “Refrigerant File Name”, type in the
refrigerant you would like to add exactly like it is on the list.
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USB Port
Cable Clamp
Ribbon Cable