Owner`s manual

OM-263 001 Page 41
Trouble Remedy
Down-time cleaning time is too long or
too short.
Reset parameter P10 on controller (see Section 6-5).
Pressure display rapidly changes
values.
Reset parameter P12 on controller (see Section 6-5).
Pressure drop does not go to zero at
no-flow condition.
Correct zero offset on controller. See parameter P13 and controller calibration information (Section
6-6.
Place line disconnect switch in On position.
Fan motor does not start Check for proper input power connections. Check input power conductor size and motor connections.
Check and replace line fuse(s), if necessary, or reset circuit breaker.
Fan motor does not continue running. Check motor starter, and replace if necessary.
Check airflow in duct. Adjust damper control until proper airflow is achieved and current draw of motor
is within manufacturer’s limits.
Verify building has sufficient electrical power to operate fume extractor.
Clean-air outlet discharging particles. Properly install filter packs.
Replace damaged filter packs.
Inspect sealing gaskets, and replace if necessary.
Insufficient airflow. Check that fan is rotating clockwise from the top of the unit. (Fan can be viewed from back of motor.)
Close and tighten access doors.
Check that collection bin discharge opening is sealed and bin is properly installed.
Remove obstructions from fan exhaust area.
Adjust airflow damper control.
Check filters, and replace if necessary.
Lack of compressed air for cleaning. Verify compressed air supply meets specifications.
Have Factory Authorized Service Agent check solenoid valves in control panel.
Have Factory Authorized Service Agent check air lines for kinks or obstructions.
Pulse valves leaking compressed air. Have Factory Authorized Service Agent check for debris, valve wear, pneumatic tubing fault, or dia-
phragm failure by removing the diaphragm cover on the pulse valves. Check for solenoid leaks or
damage. Replace valves or tubing if damaged.
Downtime cleaning cycle does not start
when system is stopped.
Downtime cleaning cycle begins 90 seconds (factory setting) after the system is shut down. Down-
time cleaning activates only if the differential pressure drop across the filters is above the low setpoint
(factory setting of 2 in. w.g.) when the system is stopped.