Sullair Desiccant Blower Purge Regenerative Dryer 650-DBP

• Daily, verify the regeneration heater outlet temperature is correct and conforms to that listed in Section 3.7.

• Daily, verify the prefilter automatic drain is functional.

• Replace seats and shaft seals on all butterfly valves.

• Replace seats and shaft seals on all ball valves.

• Dismantle the double acting pneumatic actuators. Inspect internal components for visual signs of wear and replace parts as necessary.

• Dismantle and inspect solenoid valve internal components for visual signs of wear. Replace parts as necessary.

• Check the function of all temperature controls.

The prefilter and afterfilter elements should be replaced when the following guidelines are exceeded.

• The differential pressure exceeds 5 PSIG.

• The operating service exceeds 4,500 hours.

• A period of one year is exceeded.;

• Repeat all monthly inspections.

• Check the prefilter and afterfilter elements for correct installation and excess dirt.

• Check for tightness of flange bolting especially where high temperatures occur.;

• Verify the system is leak free.

• Verify the current draw of the regeneration heater.

• Verify the operation of all pressure gauges, temperature gauges, temperature switches and the dewpoint indicator.;

Depending on the air quality and service conditions, the desiccant will last 4 to 5 years. Experience has shown that the period maybe even longer.

To change the desiccant, ensure the system is out of service,; locked out, and de-pressurized.; Remove the plug from the desiccant drain ports to allow the desiccant to fall from the vessel.

At the end of this procedure re-install the plug.

To load the new desiccant the plug on the fill ports on the top head should be removed.

Then install the amount and type of desiccant listed in Section 3.3.1 in each vessel.

Re-install the covers on the desiccant fill ports.

Prior to placing the dryer in service all plugs and flanges that were removed should be leak tested.; If any leaks occur they should be repaired and re-tested prior to placing the dryer in service.;