Page 35
709-BTP3 Manual
710JS sender shorter than 4”. The cut must be in between the
sensor pads, and the cut must be made parallel to the existing
bottom end. Double check your measurements, if the sender
is cut too short, it cannot be lengthened.
8. The senders need to be programmed so they know which tank
they are on. This is done by selectively cutting off the tabs
on the top of the sender. See the chapter entitled “SENDER
PROGRAMMING” for details.
9. For double stacked sender systems, the senders also need to
be programmed so they know whether they are being used
as top or bottom senders. See the chapter entitled “SENDER
PROGRAMMING” for details.
10. Once the sender is cut to length and programmed, do a test
by taping the sender to the tank wall. Make sure there are no
air gaps between the sender and the tank. Verify operation
before permanently sticking the sender to the tank wall.
Once proper operation has been conrmed, carefully peel the
backing paper off the adhesive. Do this slowly to prevent the
adhesive from being ripped off the sender, and to prevent
the backing paper from ripping. Be careful not to bend the
sender sharply in the process. Position the sender over the
side of the tank and carefully stick it down. MAKE SURE THAT
THE END WITH WIRES IS POINTING UP!! Position the bottom
of the sender at least ¼” above the bottom of the tank, or
slightly higher if required to equalize the space at the top and
bottom of the tank. Make sure that the sender is square with
the tank. You only have one shot at this, if you try to peel it off
the tank once it is stuck the sender may be damaged by the
sharp bending. Carefully press the sender down to the tank
so that all of the adhesive is contacting the tank wall.
11. Do steps 5 to 10 for the other two holding tanks.
12. Connect all the blue wires from the senders together, and to
the blue wire from the display. Connect the black wire from
each sender to ground at the display. It is very important
that the display and the senders have the same ground. Use
crimp on butt connectors to fasten the wires together. Make
sure that the wires from the sender are routed to the RIGHT
side of the sender, away from the sender. NEVER route the
wires to the left of the sender. If they drape over the sender
they could affect the reading. Secure the wires with tie wraps
or something similar so that the wires do not rattle or press
against the sender, this may result in sender damage or wires
breaking over time. Refer to the enclosed wiring diagrams.
13. Connect the green wire from the display to the LPG tank
sender. Make sure that the sender ground connection is
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