Belt replacement on a PD air compressor

In a periodic test of a baghouse dust collection system, the PD compressor’s belts were found almost worn out, though still running doggedly.

The PD compressor supplies compressed air of about 8 psi to the low-pressure, high-volume pulse cleaning system of the baghouse.

The belts had to be replaced. Per the model number on the old ones, the customer bought a pair of new ones, NAPA A38.

Belt replacement for this PD compressor

The alignment of the sheaves was checked first; it was good.

The sheaves and their inner faces were cleaned up and inspected; they were fine.

The motor base has a jacking bolt, so it is easy to adjust the position of the motor.

The new belts were rotated by hand for a couple of rounds to make sure they sat in the groove properly.

We then measured the span-length of the belt and the sheave diameter, read the motor RPM, and took the V-belt tension table by Browning as a reference to decide the deflection force of the belt as 6 pounds.

After the new belts were installed and properly tensioned with a tension tester, the device ran happily again.

Before wrapping up the day’s work, we checked the belt tension again, and it was still in the satisfactory range.

The customer was happy too.

We follow the same procedure when we check the belt tension or replace belts on a fan or blower.

Leak Test, Air Balancing, Trouble-shooting, and System Evaluation services by Airvate

Dye test for bag/cartridge leak detection
Dust collection system and industrial ventilation system Testing and Air Balancing
Technical services: field survey and dust collection system evaluation and trouble-shooting
New system start-up
Dust sample analysis
Dust collector selection and sizing: baghouse, wet scrubber, cyclone, settling chamber, drop-out box, etc.

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Baghouse dye test for leak detection - 2

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Dust clogged up a baghouse

We were called in by a customer on one cold morning. Their dust collection system did not work when they turned on power as usual. First, we checked the ductwork to see if there was any dust accumulated inside from the sucking points, to the fan, then to the baghouse. It seemed the ductwork was not the problem. After being in the baghouse, the filtered air went back to the workshop. Then we opened the access door of the baghouse hopper, and what we saw showed us the problem: it was packed with wood dust (Figure 1). Figure 1 baghouse hopper packed with wood dust Later, the access door on the clean side of the baghouse was opened, and one bag was taken out, it was very clear that the dust even accumulated between bags (Figure 2). Figure 2 dust clogged up between bags After the dust was removed from the baghouse, the system was turned on. In the first 20 minutes, the baghouse was warmed up without dust loading. When this happened, the daytime temperature outdoors w...

Baghouse Dye Test for leak detection

We did a Dye test for a customer in a newly installed baghouse. In this standard dye test procedure, green fluorescent dye powder was applied. No leaks were found in the clean plenum of the baghouse. All the bags were properly installed and no breach between the clean air and dirty air plenums was found either. View of Clean Plenum after Dye applied Per the request of our customer, we also got inside the dirty side of the baghouse through the inspection door on the hopper and visually checked dye powder distribution on the bags. From the picture below, it is apparent that the dye powder evenly distributed on all the bags, which means that the airflow was evenly distributed too. Customer was very happy about this visual check. Bottom View of Bags after Dye Applied

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