SeaLand TankWatch 3 Level Monitoring System - Manual

Installation Instructions
TankWatch ® 3 Level Monitoring System Instructions
Electrical:
Maximum Amperage
12 Volts DC = 1.6 amps resistive
24 Volts DC = .83 amps resistive
36 Volts DC = .62 amps resistive
Maximum Tank Pressure: 25 PSI
Materials:
Float . . . . . . . . . . . . . . . . . . Buna N
Float Switch Cap . . . . . . . . PVC
Float Switch Body. . . . . . . . ABS
O-Rings . . . . . . . . . . . . . . . Nitrile
Adjustable Stems . . . . . . . . Cross Linked Polypropylene
Compression Nut . . . . . . . . Glass Reinforced Polypropylene
Electrical and dimensional specifications subject to change without notice.
CAUTION: Do not use TankWatch system in a fuel tank. Dropping or rough handling of the cap may result in
damage to the float switches.
1 2
3
PATENT NO.
5,079,950 #1 OUT
COMMON IN
#2 OUT
#3 OUT
1. The adjustable level indicator cap fits 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 cap into tank. Slide #1 probe down until float touches
the bottom of the tank. Tighten #1 compression nut and mark probe at the top of the nut with a pen or pencil. Do
not cut the probe tubing at this mark. Loosen the compression nut, slide the probe up, and carefully cut the #1
probe tubing 1-5/8 inch (41.3mm) below mark without damaging switch wires. Pull wires through the black wire
cover and push probe down into the compression nut until black wire cover touches compression nut.
3. Remove cap from tank and adjust #2 probe for 1/2 full level for gray and black water tanks, or 1/4 full level for
freshwater tanks. Tighten compression nut and cut the probe tubing off 3/8-inch (9.5mm) above compression nut
without damaging switch wires. Slip black wire cover onto top of stem.
4. To make #1 float switch activate “Empty” light, the float must be positioned with the recessed shoulder, white
band, or the letters “NO” at bottom. Remove the C-clip from switch body, flip the float 180 degrees, and replace
the C-clip. (See Diagram #1.)
5. The #2 float switch can activate “Mid” light on black and gray water tanks and activate “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 indicator panel to level indicator cap. Use quick-disconnect 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 tank, then reconnect wires.
7. For caps with vents, route 5/8-inch vent hose from the through-hull fitting to the vent connection on the level indi-
cator cap. Use stainless steel hose clamps to secure the vent hose connections.
WIRING
DIAGRAM
Specifications