TANK TENDER INSTALLATION
AND OPERATION INSTRUCTIONS
- PLEASE READ BEFORE INSTALLATION -
INSTRUMENT PANEL LOCATION:
Locate the Tank Tender instrument panel out of the weather, wherever
readings are convenient, and it is easy to actuate the air pump, but
not below the level of the top of the tanks to be measured. When
establishing the panel location, consider the necessity of running
1/8" nylon tubing from the back of the instrument panel to the
tank to be measured. Bulkhead cutout for the instrument panel should
be 3-1/16" wide by 5" high. Screws and washers are provided
for panel mounting. If possible, some room should be left adjacent to
the instrument panel for tank calibration cards.
1/8" OD nylon tubing should be run between the instrument panel
and the tank to be measured. CAUTION! Tubing should not be pinched or
kinked, or run in locations where it may come to harm. Keep tubing
above the level of the tank to be measured so that in the event of a
tube being cut, siphon action will not be possible. Insert nylon
tubing from each tank into the brass "Legris"
connectors on the back side of the instrument valves. Push in firmly
and test with a light pull on the tubing. (See illustration on back
of page.) IMPORTANT: Constant exposure at temperatures of 180° F will
INSTALLATION OF TANK PENETRATION FITTING (TPF):
The TPF has "o" ring seals for plastic or metal tanks.
Select a location on the top of the tank, which is over the deepest
part of the tank. Measure the depth to the bottom of the tank and cut
the 1/8" nylon tubing to clear the bottom of the tank by
1". The preferred place to install the TPF is in a fitting plate
or fitting plug. The TPF should not be installed directly into tank
tops that are too thin. A minimum of four complete threads is
preferred. Should a fitting plate or plug not be available and the
tank top is thin, the TPF should be installed through a 3/16"
hole with a stainless steel flat washer, lock washer and 10-32 nut inside the tank. This can only be done if the
tank has an inspection plate to permit access. In every case, the TPF
should be installed tight enough to compress the O-ring on the
outside tank surface. The installation must be done in a manner that
will prevent metal shavings from collecting in the tank while
drilling and tapping. The shavings can cause internal corrosion of
metal tanks and clog the fuel line (bees wax on the drill is
helpful). After the TPF is installed, the tank should be pressure
checked for leakage at the test pressure indicated on the tank label.
ALTERNATE INSTALLATION OF TANK PENETRATION FITTING:
If top entry of TPF is not possible, TPF can be installed into tank
side, approximately 1" above tank bottom. In this case there
would be no tube inside the tank as the TPF fitting is now located at
the depth that the nylon tube would reach if installed from the tank
top. Be sure the TPF hole is drilled and tapped precisely so that
there is an air tight connection between the tank and fitting, as
there should always be. Run the flexible nylon tubing (outside the
tank) straight up the outside of the tank (attach to tank side, do
not have tubing run to unit lying flat) and continue on to unit.
Operate as normal.
Purge Valve operation for holding (waste) tank - Flip toggle to
"purge" prior to reading a holding tank; air will bypass
gauge and purge TPF tube, if clogged; then flip back to
"read" for tank level reading. Do not pump beyond gauge
capacity, or gauge damage may result.
Select the tank to be tested and very slowly pump (only 1-2 strokes
are necessary). Gauge needle should rise slightly above the level of
the fluid in the tank, then settle back to
the level of the fluid. If the needle pegs over the red line there is
probably a kink or blockage in the tubing between the instrument and
tank. If the needle goes up, then slowly back to zero, the tank is
empty or there is a leak between the instrument panel and the TPF.
(See "Tank Tender System Checkout Procedure for Pressure
Occasionally, after filling a tank, the additional head from the fill
pipe will force liquid up into the TPF causing an unusually high
reading. Should this be the case, pump very slowly to force liquid
out of the TPF and thus obtain an accurate reading. CAUTION: If a
head of fluid exists above the top of the tank (i.e., in the deck
fill pipe) the gauge needle will charge up. Should you observe this, release
the push button and use enough water or fuel to empty the fill pipe
before testing again.
Do not operate with deck fill pipe full.