IV
-20
ROTARY GEAR PUMP
ELECTRONIC FOAM PROPORTIONING SYSTEM
Section
IV
: Operation
Chart 4-3. HPF Flowsensor Troubleshooting
IS WATER
FLOWING?
IS CONTROL UNIT
DISPLAY LIGHTED?
IS FLOW LED ON
CONTROL UNIT
LIGHTED?
DOES WATER FLOW
RATE SHOW ON
CONTROL UNIT?
DOES WATER FLOW
RATE SHOW
ACCURATELY ON
CONTROL UNIT?
ESTABLISH WATER FLOW
IN ACCORDANCE WITH
APPARATUS OPERATING
PROCEDURES
PROCEED TO
POWER SUPPLY
TROUBLESHOOTING
CHART 4-2
PRESS SELECT
DISPLAY BUTTON
UNTIL FLOW LED
LIGHTS
SHUTDOWN WATER
FLOW AND REMOVE
FLOWSENSOR
FROM TEE
SEE USER
CALIBRATION
PROCEDURES IN
SECTION III AND
CALIBRATE
FLOWSENSOR?
CONTINUE SYSTEM
TROUBLESHOOTING
USING CHART 4-1
IS FLOWSENSOR
PADDLEWHEEL
JAMMED?
CAN
PADDLEWHEEL
BE FREED?
REPLACE
FLOWSENSOR
SPIN
PADDLEWHEEL
BY HAND
DOES WATER
FLOW RATE
SHOW ON
CONTROL UNIT?
DISCONNECT FLOWSENSOR
CABLE AND CONNECT A NEW
CABLE TO CONTROL UNIT.
SPIN PADDLEWHEEL
DOES WATER FLOW
RATE SHOW ON
CONTROL UNIT?
REPLACE
FLOWSENSOR
SECURE NEW
FLOWSENSOR
CORDSET
NO
NO
NO
NO
YES
NO
YES
YES
NO
YES
NO
NO
YES
NO
YES
START