13
Installation (cont.)
Remote Run/Hold
To use the remote Run/Hold feature, the connector with the gray wire tie at the end of the Flow/Servo harness. If using a
switch, connect the switch (not supplied) across the 2 pins on the connector, or to the 2 wires behind the connector. Switch
OPEN = Run, Switch CLOSED = Hold.
This could be done nearer the console by connecting one switch terminal to ground, and the other switch terminal to the gray
wire on the 10-pin connector on the back of the console.
If using the Micro-Trak Hall-Effect Run/Hold Sensor Kit, connect the sensor cable to the connector with the gray tie. When
installing the sensor kit, mount so that when the sensor is near the magnet the system is in HOLD and when the sensor is away
from the magnet the system is in RUN.
Mounting and Plumbing Flowmeter
Sprayer Line*
Locknut
Sensor
(green body)
Flowmeter
* NOT INCLUDED
“L” Bracket*
Hose Clamps*
¾” NPT Male Fitting*
Hose Clamps*
Hose Clamps*
Illustration 4
The flowmeter must be installed in the main line after any
strainers, return lines, or valves. Securely mount flowmeter
in an area away from intense vibration. A vertical installation
with flow entering the bottom is preferred, especially at rates
below 5 gallons per minute. Other orientations are sufficient
providing the flowmeter remains full of fluid. To avoid erratic
flow readings allow a minimum of 6” of straight tubing at the
flowmeter input and output. If installation constraints don’t
allow this keep bends as gentle as possible.
See Illustration 4.
Micro-Trak® flow meters are bidirectional (exception: green
plastic turbine and mag. flowmeters are one direction only).
Flipping the flowmeter periodically (black nylon and stainless
steel Micro-Trak manufactured models) to reverse the flow
will greatly extend the life of the flowmeter by evening out
bearing wear.
Installing Flow Sensor Cable
With the flowmeter in place, install the flow sensor cable.
The flow sensor cable has a GREEN sensor body and mates
with the 3-pin connector on the main harness marked with
a GREEN cable tie. Screw sensor all the way into hole of
flow me ter. Tighten 3/8” jam nut to secure sen sor in place.
Uncoil flow sensor cable and carefully route it to meet the
main harness flow connector marked with GREEN tie. Align
connectors and press firmly together until locking tab clicks
into place. Secure cable with ties provided.
See Illustration
5 and MT-3405F II Wiring Diagram on page 8.
Note: Sensors with GREEN bodies can be used for either
SPEED or FLOW but not for RUN/HOLD.
5’ Hall-effect Flow Sensor Cable
with Threaded Sensor Connector
Green Body
Illustration 5
A B
C
C B A
Flow Sensor
Cable Connector
Main Harness
Flow Connector
Green Tie
Connect flow sensor cable to green-tie console cable.
