Troubleshooting Nidec Selectech Ecm Motors; Figure 24 Motor Connections - Bard MULTI-TEC W18AAPA Service Instructions Manual

Troubleshooting Nidec SelecTech
Series ECM Motors
TROUBLESHOOTING GE X13-SERIES ECM2.3
If the Motor Is Running
NOTE: Bard Models PA13242; PA13302; PA13362-A, -B; PA13422-A, -B, -C; PA13482-A, -B, -C; PA13602-A, -B, -C
1. It is normal for the motor to rock back and forth
contain the X13-Series Motors.
on start up. Do not replace the motor if this is the
If the Motor is Running
only problem identified.
1. It is normal for the motor to rock back and forth on start up.
Do not replace the motor if this is the only problem identified. 2. If the system is excessively noisy, does not appear
2. If the system is excessively noisy, does not appear to change to change speeds in response to a demand (Heat,
speeds in response to a demand (Heat, Cool, Other), or is having
Cool, Other) or is having symptoms during the
symptoms during the cycle such as tripping limit or freezing coil,
cycle such as tripping limit or freezing coil, check
check the following:
the following:
a. Wait for programmed delays to time out.
b.Ensure that the motors control inputs are wired to the factory
A. Wait for programmed delays to time out.
supplied wiring diagram to insure motor is getting proper
B. Ensure that the motors control inputs are
control signals and sequencing.
c. Remove the filter and check that all dampers, registers, and wired as shown in the factory-supplied wiring
grilles are open and free flowing. If removing the filters
diagram to ensure motor is getting proper
corrects the problem, clean or replace with a less restrictive
control signals and sequencing.
filter. Also check and clean the blower wheel or coil as
necessary.
C. Remove the filter and check that all dampers,
d.Check the external static pressure (total of both supply and
registers and grilles are open and free flowing.
return) to insure that you are within the ranges as listed on the
If removing the filters corrects the problem,
unit serial plate. If higher than allowed, additional duct work
clean or replace with a less restrictive filter.
is needed.
Also check and clean the blower wheel or coil
as necessary.
↓
L2 LINE EARTH
POWER GROUND
NOTE: MOTOR IS CONSTANTLY
POWERED BY LINE VOLTAGE
Manual 2100-467H
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FIGURE 24
Motor Connections
FIGURE 10
↓
L1 LINE
POWER
D. Check the external static pressure (total of
both supply and return) to ensure it is within
the range as listed on the unit serial plate. If
higher than allowed, additional duct work is
needed.
E. If the motor does not shut off at the end of the
e. If the motor does not shut off at the end of the cycle, wait for
any programmed delays to time out (no more than 90
cycle, wait for any programmed delays to time
seconds). Also make sure that there is no call for
out (no more than 90 seconds). Also make
"Continuous Fan" on the "G" terminal.
sure that there is no call for "Continuous Fan"
f. If the above diagnostics do not solve the problem, confirm the
on the "G" terminal.
voltage checks in the next section below, then continue with
the "Model X13 Communication Diagnostics".
F. If the above diagnostics do not solve the
problem, confirm the voltage checks in the
If the Motor is Not Running
next section below, then continue with the
1. Check for proper high voltage and ground at the (L/L1) (G) (N/
Model SelecTech Communication Diagnostics.
L2) connections at the motor (see Figure 10). Correct any voltage
issues before proceeding to the next step. The X13 Motor is voltage
If the Motor Is Not Running
specific. Only the correct voltage should be applied to the proper
motor. Input voltage within plus or minus 10% of the nominal 230
1. Check for proper high voltage and ground at the
VAC is acceptable.
L/L1, G and N/L2 connections at the motor (see
2. If the motor has proper high voltage and ground at the (L/L1)
Figure 24). Correct any voltage issues before
(G) (N/L2) connections, then continue with the "Model X13
proceeding to the next step. The SelecTech motor
Communication Diagnostics".
is voltage specific. Only the correct voltage should
be applied to the proper motor. Input voltage
within plus or minus 10% of the nominal line
power VAC is acceptable.
LINE
POWER
GROUND
LINE
POWER
™ MOTORS
Manual 2100-665D
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