Instruction manual

104
Bleed Time Out
This error message indicates that the bleed relay output has been activated for an amount of time
that exceeds the user-programmed maximum allowable time. The bleed output relay will be forced
off until the “Reset Time out” button found in the Bleed Output Page is clicked.
Possible Causes Corrective Actions
Maximum bleed time is set too low for Go to the Bleed Output Page and increase the
normal circumstances programmed value for the maximum bleed
time.
.
System conductivity was higher than Go to the Bleed Output Page and increase the
normal. programmed value for the maximum bleed
time until the conductivity is brought back
down to normal levels.
Y Strainer is plugged. Clean Y strainer.
Insufficient pressure differential. Ensure that the sample piping is tapped into
the discharge side of the circulation pump, and
flows to either atmospheric pressure (the
cooling tower sump) or the suction side of the
circulation pump.
Control direction is set incorrectly. The normal control direction for an open
recirculation loop cooling tower is “Force
Lower”. Go to the Bleed Output Page and
check the setting for the control direction.
You are bleeding based on makeup volume Go to the Water Meter Input Page and verify
and you are getting false contacts. that the makeup water total is going up even
when the makeup water is not flowing.
Disconnect the water meter cable from the
controller and verify that the makeup water
total stops going up. Route the water meter
cable away from any AC voltage and make
sure that the cable is shielded.
Faulty bleed solenoid. Repair or replace solenoid valve.
No sample flow, and faulty flow switch. Clean flow switch as described in Section 7.1
above. Verify that the float travels up and
down with the presence and absence of flow.
Fuse blown. Replace fuse (F3).
Faulty bleed solenoid wiring. Correct wiring.
Faulty bleed relay. Replace the relay interface board.