AV30 PRE-INSTALLATION REQUIREMENTS | AV30 Pre-Installati on Requirements | v. 3.0
19 / 37
If all three resistance readings for each pump are relatively close then the motor wiring in the
junction box is most likely correct.
Test each pump individually and as follows:
Using your multimeter put one test lead on U and the other on V. Note the resistance. Then leave the
lead on U and put the other lead on W. Note the resistance. Lastly, leave the lead on W and put the
other lead on V. Note the resistance. Do this for all 3 pumps. (See resistance ranges below for
reference)
**If one of the three readings has a difference of more than 0.5 ohms. Check motor wiring at junction
box.
Resistance Ranges:
Residue Pump
U1A-V1A =
8-10
ohms
V1A-W1A =
8-10
ohms
W1A-U1A =
8-10
ohms
Ethanol Pump
U2B-V2B =
8-10
ohms
V2B-W2B =
8-10
ohms
W2B-U2B =
8-10
ohms
Feed Pump
U3C-V3C =
8-10
ohms
V3C-W3C =
8-10
ohms
W3C-U3C =
8-10
ohms
Checking Voltage in PLC Cabinet
***WARNING! DO NOT POWER ON THE MAIN BREAKER UNTIL YOU VERIFY THE CORRECT VOLTAGE
(208-240V)
Measure (A phase-B phase) leg-to-leg by testing the two wires landed in the top side of Main
Breaker(CB1) with your multimeter. Make sure you have 208-230v. If you don't have the proper
voltage, first make sure the breaker or disconnect for PLC is powered “ON”.
If you still don't have the
correct voltage(208-230V) STOP and get an electrician for assistance. DO NOT CONTINUE UNTIL YOU
RESOLVE THE ISSUE AS YOU COULD POSSIBLY DAMAGE THE PLC.
After confirming the correct voltage, check that
all
Circuit Breakers in the PLC are set to “OFF” or
Green(safe).
Make sure all circuit breakers are set to “OFF/GREEN”. Once
all
circuit breakers are off, turn on Main
Breaker(CB1).
Test the 120V wiring in the PLC cabinet with your multimeter by touching one lead to the Neutral and
the other lead to the top side of Circuit Breaker # 5 (CB5). It is located in the top left side of the PLC
cabinet.
If 120v is present you may turn on all circuit breakers and can now power on the HMI. If 120V is not
present, STOP and call Aqua Sierra.
Powering on the Human Machine Interface (HMI)
