MANU ELECTRONICS ManuFlo ME3000-RPFS, Информационный лист

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Manu Flo

Flow Measurement & Control Products
a division of
MANU ELECTRONICS PTY LTD
www.manuelectronics.com.au
TROUBLE SHOOTING GUIDE
Manu Flo
®
TM
FOR BATCH CONTROLLER / ROTA PULSE FLOW METER SYSTEMS
PROBLEM POSSIBLE CAUSE SUGGESTED SOLUTION

No power to batch controller

Blown fuse or holder not tightened

Check fuse, tighten fuse holder (at rear of controller)
or displays not on

+12vdc and O.V. shorted

Check pulse cable from DCD to RPFS meter

No main power supply

Check power supply, check wiring

Pulse fails at start of batch •Check calibration (K-factor) setting •000 calibration –pulse-fails. Make sure a calibration value is set.
(1.5 seconds after typical)

Seized paddlewheel

Remove RPFS, inspect; clean with acid, check axle/bushes
make sure paddlewheel spins freely

Solenoid valve not opening

Check and service solenoid valve, check output control voltage is
240vac(N & C, pins 7&9) when pushing start button

Restriction or service gate valve closed

Open gate valve

Empty water tank

Check water level

Pump not turning

Check and service pump
•Pump foot valve failed •Empty pipe, Install non-return valve

Signal cable cut, bad joint at JB,

Check signal cable for 12VDC at junction box near RPFS meter
oxidized cable- leakage If no power, cable cut or oxidized- repair/replace.
Unwire RPFS, take up to batch-room, remove extension cable and
hardwire RPFS direct into the Batch controller (P,+,-), spin wheel
should count on display, if so, then extension cable or connections
at JB faulty, if no counts & 12vdc present then RPFS faulty
•RPFS not positioned in pipe •Check RPFS slots are in keyway position, lock cap secured
Paddlewheel not inserted into flow stream

RPFS Flowmeter faulty

Replace with new RPFS

Pulse fails during batch cycle

Flowrate too slow

Open restriction gate valve, or increase minimum flowrate in
program. Pipe diameter too big for flowrate (reduce pipe dia. or increase flow)

Pipe buildup restricting flow

Cleanout pipelines, calcium buildup on pipe walls -recycle systems

Paddlewheel problem

Calcium buildup on wheel, soak in diluted acid. Warn bushes.

Backflow alarm

Non return valve faulty (jammed open)

Clean, service or replace
after batch complete •Solenoid valve not properly closed •damaged seal, faulty solenoid

Batch target display counter

Flowrate too fast excessive overflow

Turn down gate valve to restrict flowrate
counts past batch selection or set preact (overflow deduct) function to compensate

Reduce delivery pipe diameter
•Intermittent overflow past batch select •Faulty solenoid valve not closing •service solenoid valve, check air pressure
or water does not stop properly, insufficient air pressure
Over batch alarm sounds

Wet loads, more water

Paddlewheel bushes worn

Check paddlewheel
collected than indicated

Wheel dirty, flowing over range

Replace with new paddlewheel, recalibrate

Dry loads, less water

Requires recalibration test

Set new calibration figure.
collected than indicated

Controller starts counting

Active and contact power

Contactor fused due to excessive current draw from pump
when power switched on drive short circuited

Relay fused due to excessive current draw on solenoid coil
- install higher current rated contactor or install contactor

Interference on pulse cable input –use shielded cable only.
ANY OTHER PROBLEMS REFER TO ME3000 USER MANUAL –Trouble shooting guide.
Sequential fault finding and rectification
1. If a another ManuFlo controller (any model) is available, simply unplug doubtful unit and plug in exchange unit. If the new unit is also not
operating correctly, then the problem is isolated to the pulse flowmeter or wiring.
2. When checking flowmeter, reset the ManuFlo controller. Remove the flow sensor and spin the paddlewheel. Check that the ManuFlo
controller has registered a number of counts on its display. If so, the lectrical connections are probably OK. If no counts are registered, check
that 12VDC is supplied to the flow sensor. If supplied, then switch off the ManuFlo controller and replace the RPFS flow sensor.
3. The flow sensor paddlewheel is jammed, damaged etc. (For servicing, refer to the flow sensor brochure).
If in further doubt, contact your local representative, or ManuFlo on ph +61 2 9938 1425 or 9905 432