Dwyer PDWS - Manual (Page 6)

Problem Probable cause try...
No signal
after installation
Inaccurate
metering
Consult Flow Range Chart
Reduce pipe size or use different
sensor
Check connections at control;
Red (+), Black (-), White (signal)
Use 6 to 24 VDC power supply
Add pull up resistor, if using current-
sourcing device
Remove flow sensor from fitting and check
for free spinning; replace rotor
See signal troubleshooting; replace
magnetic sensor
Move meter away from flow disturbance, or
field-calibrate
Check fitting for K-Factor, check indicator to
see if it is entered properly ("Set K" on
RTI)
Remove flow sensor from pipe. If indicator
is an RTI, set K to 1.00, turn rotor slowly by
hand, indicator should count each blade;
replace sensor
If using an RTI, check left side of
display (sec, min, hr, day); change to
desired unit
Insufficient flow
Bad connections to control electronics
Incompatible control
Damaged or missing rotor
Failed magnetic sensor
Not enough straight pipe between meter and
severe flow disturbance
Wrong K-Factor entered
Magnetic sensor failing to pick up each blade
Wrong time units on flow indicator
tROubleShOOtiNG PaRtS eXPlOSiON
Upper Housing
Gasket
Lower Housing
Housing Screw Assembly
Plug, Steel
Plug, Plastic
Strain Relief
Sensor Retainer
Sensor, Low Power
Body
O-Ring, EPDM
Bearing Screws (2)
Rotor (Nickel/Carbide Shaft)
Rotor (Ceramic Shaft)
Rotor Repair Kit (Kynar/Carbide)
Rotor Repair Kit (Kynar/Ceramic)
Standard Fitting
High Pressure Fitting
SeRieS PDWS PaRtS liStiNG
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