SeaLand DTM04 Tank Monitor System Manual - Manual (Page 4)

TANK MONITOR SYSTEMS
4
INSTAllATION
Adjustable Tank Probe cap
1. The tank probe cap is designed for a 3-inch FPT opening. Order part number 230272 if tank is made of rigid
material and is not a SeaLand holding tank.
2. Loosen compression nuts on adjustable probes and install the cap into the tank. Slide the #1 probe down
until the float touches the bottom of the tank. Tighten #1 compression nut and mark the probe at the top of
the nut with a pen or pencil. Do not cut the probe’s tubing at this mark. Loosen the compression nut, slide
the probe up, and carefully cut the #1 probe’s tubing 1-5/8 inch (41.3mm) below the mark without damaging
the switch wires. Pull the wires through the black wire cover and push the probe down into the compression
nut until the black wire cover touches the compression nut.
3. Remove cap from tank and adjust the #2 probe for 1/2 full level for gray and black water tanks or 1/4 full level
for freshwater tanks. Tighten the compression nut and cut the probe’s tubing off 3/8-inch (9.5mm) above the
compression nut without damaging the switch wires. Slip the black wire cover onto the top of the stem.
4. To make the #1 float switch activate the “Empty” light, the float must be positioned with the recessed shoulder,
white band, or the letters “NO” at the bottom. Remove the C-clip from the switch body, flip the float 180 degrees,
and replace the C-clip. (See Diagram #1.)
5. The #2 float switch can activate the “Mid” light on black and gray water tanks and activate the “Low” light on
freshwater tanks. The recessed shoulder, white band, or the letters “NO” should be facing up for black and
gray water tanks and down for freshwater tanks. (See Diagram #2.)
6. Route 18-gauge stranded copper wire from the indicator panel to the level indicator cap. Use quick-discon-
nect terminals on float switch wires to prevent twisting wires when removing the cap. With cap removed from
the tank, connect the wires according to the wiring diagram and test the floats by moving them up and down.
Disconnect the wires and install the cap with the O-ring into the tank, then reconnect the wires.
7. For caps with vents, route 5/8-inch vent hose from the through-hull fitting to the vent connection on the level
indicator cap. Use stainless steel hose clamps to secure the vent hose connection.
Monitor Panel
1. Select a mounting location away from direct contact with water and oil. Dry locations in the bathroom, salon or
galley are most desirable.
2. Confirm clearances for the panel and wire connections behind walls, hull liner or bulkhead.
3. Cut out mounting holes (see template for panel and
fastener hole locations.)
4. Do not mount the circuit panel until wiring is routed
and properly connected.
5. Route wires following the appropriate wiring diagram
for black, gray or fresh water applications.
6. Include wires for optional electrical accessories that
may be part of the installation and shown in separate
wiring diagrams.
7. Install the circuit panel with the four #6 fasteners
provided. Make sure to install with the “UP” arrow
pointing in the proper direction.
8. Push the panel cover onto the circuit panel until it
snaps into place.