Great Lakes Air Compressed Air Dryer GBS-1600

• The Pre & After-filter element should be replaced whenever the pressure drop becomes excessive.

• Differential pressure is the best method to gauge the need for element replacement. The recommended maximum element differential is 10 PSIG.

• The pressure at which you should change your elements should be determined by comparing the operational efficiency of your system (Cost of pressure drop vs. cost or the elements).

• Many facilities put filter replacement on an annual or bi-annual schedule based on system contaminant load.

• Frequent inspection of the control air filter is required so desiccant particulate does not restrict the control air required for pneumatic actuation of dryer valves.

• The control air filter is generally replaced when the particulate after-filter on the dryer is replaced.;

Warning: Only trained personnel should perform this maintenance

Check if the blower intake filter is clogged

Enter the filter differential in H²O

If the filter differential is above 10” of H²O, replace the filter

Sign off on the blower intake filter maintenance

Warning: This maintenance check requires trained personnel with PPE!

Purge mufflers preventing high noise levels?

Muffler elements clogged due to desiccant fines?

If muffler elements are clogged, replace them.

Purge tower showing backpressure during operation?

If purge tower shows backpressure, replace the muffler element.

Desiccant dust accumulation prior to equipment startup?

If there is desiccant dust accumulation, clean it.

High volume of desiccant fines from startup?

Warning: This procedure requires trained personnel with PPE!

If desiccant is contaminated, determine the level of oil contamination.

Select the level of oil contamination

Drain the spent desiccant through the desiccant drain port in the bottom of each tank.

Was the desiccant successfully drained?

Dispose of the spent desiccant as a general landfill product.

Add fresh desiccant through the desiccant fill port.

Was the fresh desiccant successfully added?

Warning: The Blower Polishing and External Heated modes of operation require an adequate supply of purge air which is essential for proper regeneration of desiccant and good dewpoint suppression.

If your system pressure varies throughout the day, set the purge pressure at a low-pressure period so during those low-pressure periods the purge flow is not starved.

Always consult the factory prior to changing operating conditions.

Is the adjustable purge valve set to the standard conditions?

DO NOT operate the dryer with the purge valve closed the flow path is required in all modes for repressurization.

Sign off on the purge rate maintenance