Parker Hannifin Externally Heated & Blower Purge Desiccant Dryer TWB800PL4ED-1303030

CAUTION! Use caution when near the dryer and wear eye protection. Hearing protection is recommended. Dryer maintenance should only be performed by trained personnel. Always shutdown the dryer, relieve all pressure, and disconnect power before servicing.

Are the readings within the design specifications of the dryer?

Check blower (Blower purge models only)

Check blower inlet filter (Blower purge models only)

Sign off on the weekly dryer maintenance

CAUTION! Use caution when near the dryer and wear eye protection. Hearing protection is recommended. Dryer maintenance should only be performed by trained personnel. Always shutdown the dryer, relieve all pressure, and disconnect power before servicing.

Condition of the prefilter and afterfilter elements checked?

Differential pressure across the filters

Desiccant from a freshly regenerated bed should be white, dry to the touch and of consistent size and shape. Continuous adsorption and desorption causes the performance level of desiccant to decline over time. Oil and contaminants causes reduction in the adsorption ability of the desiccant. It is recommended to replace the desiccant every 3-5 years.

Exhaust mufflers checked and verified there is no back pressure in regenerating vessel?

Wire connections to heater tightened?

Stud terminals should be tightened to a maximum torque of 20 in-lbs while the bottom nut is supported. Stud terminals that do not have a bussbar or factory installed ring connector should only be tightened to 9 in-lbs.

Condition of blower inlet filter element checked and replaced as needed? (Blower purge models only)

CAUTION! Use caution when near the dryer and wear eye protection. Hearing protection is recommended. Dryer maintenance should only be performed by trained personnel. Always shutdown the dryer, relieve all pressure, and disconnect power before servicing.

Dewpoint of the compressed air system

Purge pressure setting check (TWP only)

Prefilter drain operation check

Back pressure on regenerating vessel check

CAUTION! Use caution when near the dryer and wear eye protection. Hearing protection is recommended. Dryer maintenance should only be performed by trained personnel. Always shutdown the dryer, relieve all pressure, and disconnect power before servicing.

Check condition of control air filter element. Replace as needed.

Check condition of all inlet and exhaust switching valves. It is recommended to clean and rebuild the valves to maintain proper working condition.

Check dewpoint sensor and recalibrate as needed.

Check contactors and starters. Replace as needed.

Inspect blower head, tensioner, and pulleys for correct operation. (Blower purge models 4000-6000 only.)

Sign off on the 1 Year Dryer Maintenance