• Lift-up the top pre-filter and open cover to access the
electrical panel. Locate Motor Voltage Sampling Port.
• Plug in the voltmeter to the Motor Voltage Sampling Port.
• Measure the actual airflow velocity using anemometer or
flow hood. If actual airflow is not okay, please adjust motor
speed controller accordingly until actual airflow is okay.
• Adjust the blower voltage until airflow is at nominal point.
• If the blower is already operating at maximum voltage and
the airflow is still lower than nominal point, it may be due
to filter being loaded. Please change the filter.
Note: The cabinet must be certified at least annually.
• If the blower is already operating at maximum voltage and
the airflow is still low due to filter loaded, it’s time to
change the filter. Instruction on how to replace the filter is
available in this manual under Service Section.
• If filter is not loaded, proceed to next step.
• If the building supply voltage fluctuates more than the
stated tolerance (± 2%), connect the cabinet to a voltage
stabilizer.
• If the building supply voltage fluctuation is below ±2%,
proceed to next step.
• Adjust the speed control (located inside the electrical
panel, on top of the cabinet) to get the optimum airflow
as stated in the test report.
• Change the downflow filter if filter is found out to be
leaking.
• Re-certify the cabinet after the new filter has been installed.
To Next Page
Loading...
Need help?
General
