TeeJet ARC-6000 - Manual (Page 28)

98-05017
Rev.- 1
4-2
ARC 6000
CE & S TANDARD V ERSION
4.4. FLOW SENSOR (LIQUID APPLICATION)
Prior to each day’s spraying, the flow sensor should be inspected to ensure there are no leaks around the attachment fittings. At
the end of the day, care should be taken to thoroughly flush the flow sensor with clean water. BE CAREFUL THAT WATER
OR SEDIMENT IS NOT TRAPPED IN THE FLOW SENSOR, PARTICULARLY IN COLD WEATHER, AS DAMAGE
TO THE MECHANISM MAY OCCUR.
The impeller type flow meters supplied by MIDWEST TECHNOLOGIES are inherently rugged. However, continued use will
eventually wear the internal bearings and shafts until the meter becomes inaccurate. Replacement kits are available to repair the
flowmeters. Contact your MID-TECH dealer for these parts.
4.5. CONVEYOR RATE SENSOR (GRANULAR APPLICATION)
Prior to each day's operation, check to be sure the restraining strap is securely attached to the sensor. Some installations require
two restraining straps mounted at right angles to each other. This keeps the sensor from emitting false signals to the control
console.
4.6. FLOW CONTROL VALVE (LIQUID APPLICATION)
Prior to each day’s spraying, the flow control valve should be inspected to ensure there are no leaks around the attachment fittings.
At the end of the day, care should be taken to thoroughly flush the flow control valve with clean water. BE CAREFUL THAT
WATER OR SEDIMENT IS NOT TRAPPED IN THE FLOW CONTROL VALVE, PARTICULARLY IN COLD
WEATHER, AS DAMAGE TO THE MECHANISM MAY OCCUR.
4.7. WIRING HARNESS
Most failures of electronic systems like the MIDWEST TECHNOLOGIES control system are the result of broken wires or poor
connections. Taking some time to periodically inspect and clean the wiring harness will help prevent these types of failures.
Inspect the external cabling for abrasion, stretched or pinched wires. If such a condition is seen, reroute the cabling and wrap
it to protect it from further damage. If a broken wire is found, it can be temporarily repaired by stripping the wire back on each
side of the break, twisting it together and soldering the connection (Do not use acid core solder). The bare connection must be
well insulated with heat shrink material or electrical tape.
MIDWEST TECHNOLOGIES strongly recommends replacement of damaged cables as soon as possible. Once the cable
insulation is damaged, moisture and chemicals can work their way under the insulation and cause corrosion to the conductor. In
the end, continued problems will be experienced with the cable if it isn’t replaced.
The connectors at the ends of the cables must be periodically inspected and cleaned. Use a non- lubricating spray solvent (such
as a tuner cleaner) to clean the connections. Lubricating sprays leave a film which collects dirt and can eventually lead to failure
of the contact. If the contact is so dirty it must be wiped clean, use a non abrasive swab (like a Q-TIP), along with the solvent,
to avoid wear to the connector contact.
Sometimes connectors become damaged or worn out from many years of service. In this case, contact your MID-TECH supplier
for a replacement connector kit.