Sterling 882.00379.00 Adjusting Air Pulse Duration All Models, Adjusting the Number of Air Pulses

Adjusting Air Pulse Duration: All Models

Locate the on-time potentiometer inside the control enclosure on the circuit board. With the unit operating, turn the potentiometer counterclockwise to shorten the air pulse duration; turn clockwise to lengthen the air pulse.

ACA Series Filter Chamber Pre-Operation Checklist

Check the following before you operate ACA Series filter chambers:

1.Make sure all mechanical installations are complete.

2.Make sure all electrical and compressed air connections are complete and correct.

3.Make sure that no leaks are present in the filter chamber housing. Check stretcher clamps for tightness.

Adjusting Time Between Air Pulses on ACA Filters

Models 91/93, 151/153, and 251/253

The time between cleaning air pulses requires adjusting to match up with dusting characteristics of the material being conveyed. If more dusting occurs, then more frequent compressed air pulses are required to clean filter bags.

Locate the off-time control potentiometer inside the control enclosure and adjust from 0- to 30-second intervals between air pulses to match material conveying characteristics.

Adjusting the Number of Air Pulses

Model 51/53 Low Boy

Locate the DIP switch inside the blowback control box. Set the DIP switch to the number of pulses you want from 1 to 16, using the DIP switch settings shown in the following figure. The diagram is also shown on the blowback control box electrical schematic located in your Customer Service Packet.

Figure 41: ACA Series Model 50 Blowback DIP Switch Settings

16 PULSES

1 2 3 4

OFFOFFOFFOFF

OPEN

15 PULSES				14 PULSES
1	2	3	4	1	2	3		4
O N					O N
	OFFOFFOFF			OFF			OFFOFF
		OPEN				OPEN

13 PULSES

1 2 3 4

O N O N

OFFOFF

OPEN

12 PULSES

1	2	3	4
		O N
OFFOFF			OFF

OPEN

11 PULSES					10 PULSES
1	2	3	4	1		2	3		4
O N		O N				O N		O N
	OFF		OFF		OFF				OFF
	OPEN						OPEN

9 PULSES

1 2 3 4

O N O N O N

OFF

OPEN

8 PULSES

1 2 3 4

O N

OFFOFFOFF

OPEN

4 PULSES

1 2 3 4

O N O N

OFFOFF

OPEN

7 PULSES

1 2 3 4

O N O N

OFFOFF

OPEN

3 PULSES

1	2	3		4
O N			O N	O N
	OFF
		OPEN

6 PULSES

1	2	3	4
	O N		O N
OFF		OFF

OPEN

2 PULSES

1 2 3 4

O N O N O N

OFF

OPEN

5 PULSES

1	2	3	4
O N O N			O N

OFF

OPEN

1 PULSE

1 2 3 4

O N O N O N O N

OPEN

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Conveying System Mechanical Components Chapter 3: Installation 77 of 138