14.4.2 Low dust loading typically shows a steady level of differential pressure with very little fluctuations once equilibrium is reached. By contrast, heavy loading can produce s ignificant “Ups and Downs” in operating differential pressure. 14.4.3 M ake immediate “Off - Time” time reductions on the timer board dial if significant increases in operating differential pressure become realized. However, if differential pressure drops, monitor the system before increasing the “Off - Time”, and then only in small steps. NOTE: A critical step during “Start U p ” is to reach an acceptable operating equilibrium point. This operating condition must be reached gradually in order not to damage the filters by binding. While achieving equilibrium, you may want to clean the filters more often than required instead of not often enough. Gradually and tentatively increase the valve “Off Time” until equilibrium is reached. Also, making notes and recording results will help the operator gage the effectiveness of various AMTECH filters and filter pretreatment. Should questions arise contact your Clean Air Industries distributor.
15.0 SHUTDOWN
15.1 The “ Shutdown ” procedure consists of de-energizing the blower motor. The digital reverse pulse cleaning systems are equipped with an “ Off Line Cleaning ” feature which activates the reverse jet pulse cleaning. This element will clean the filter cartridges while the unit is off line, for a preset number of pulses. Once the cleaning cycle is complete the collector is ready to be energized when needed CAUTION: Off line cleaning can cause pressure waves to feed back through the inlet of the collector and the attached duct work. Precautions may be necessary to prevent dusting.
16.0 MAINTENANCE SAFETY
CAUTION: Personnel involved with the AMTECH collector must be familiar with the operation and the information in this manual. Please make sure all personnel have read and understood the manual.
16.1 Secure all electrical power to the unit (Lock and tag out the unit).
16.2 Secure compressed air flowing into the unit (Lock and tag out the air flow). Additionally, bleed the air system to remove any residual air pressure.
16.3 All areas below the collector must be “OFF - LIMITS” when overhead work is performed.
17.0 MAINTENANCE PROCEDURES
17.1 With sound periodic and routine maintenance programs you should receive a long service life from your AMTECH collector. Maintenance schedules may be adjusted by a competent operator/servicer of the system, as a result of experience, determined after a reasonable period of operation.
17.2 Routine maintenance consists of the following:
17.2.1 Observe the filter differential pressure at least once every 8 hours of operation. Each application will vary. Refer to “Comments Filter Differential Pressure during Operation” on page 8.
17.2.2 Remove any moisture that has accumulated in the compressed air manifold and accumulator.
17.2.3 Ensure that the collected dust material is removed from the dust storage container, as necessary, and disposed of in accordance with ALL local/state/national laws/regulations.
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