• Ensure that there are no external sources of airflow
disturbance like air conditioner vent, window or
incidences of door opening or people walking fast near
the cabinet.
• Ensure that there is no air disturbance or obstruction on
top of the pre-filter of the cabinet.
• If there is no external air blockage/interference, switch
“ON” the blower fan.
• Open the top access cover and locate electrical panel
inside.
• Refer to Fig. 3.1 (PCR) or Fig. 3.2 (SCR) below to locate
motor voltage sampling port.
• Using voltmeter, measure AC voltage at the motor
voltage sampling port as described in the re-certification
section of this manual. This is to measure the motor
voltage.
• If the motor voltage is lower than the Nominal Voltage
value recorded in factory test report, adjust the speed
control to get output voltage to blower as specified in
the Test Report – Test Conditions Documentation Sheet.
• If still the airflow is not at nominal velocity, proceed to
next step
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