24GDED-IOM-215-AOperational data to be recorded could include measurements taken of the air flowrate and the pressure differential across the cartridges. This should be recorded weekly ormonthly. This record can assist with maintenance schedules and show collector variancesdue to operations.Maintenance data to be recorded should include details of inspections and any partsreplaced.See final page of IOM for Maintenance Interval Checklist.The following maintenance intervals are recommendations by AAF, your dustcollection system may need more or less frequent maintenance plans.12.2 Initial Weekly MaintenanceThis should be done during the first month of initial collector operation.Record the differential pressure across the cartridges at start-up. Record the collectordifferential pressure regularly for at least the first 30 days of operation.Adverse operating conditions can be detected by a change in differential pressure.The differential pressure can be read on the display of the pulse controller. After start-up,the dust collector’s differential pressure should settle to approximately 2-3 inches w.g.The filter cleaning cycle is automatically controlled from the pulse controller witheither the differential pressure set points or the timed interval used to maintain a steadypressure differential across the filter.Do not be alarmed if cleaning pulses cause momentary spikes in the differentialpressure readings.NOTE: The time interval between pulses is factory pre-set at 30 seconds. It may bechanged and is dependent on the application. Effective cleaning is reliant upon pulsefrequency, duration and pulse compressed air pressure. The pulse duration is pre-set at 100milliseconds. DO NOT change the factory setting without contacting an AAF Internationalrepresentative.Inspect the dust disposal equipment on a regular basis during the first month ofoperation to determine that the collected dust is being disposed at a rate consistent withthe operation. Failure to ensure that the collected dust is taken away at the appropriaterate will result in material building up into the hopper and could cause malfunction. This is