Page 212 - Med Plaza and Cancer Center

"Oil-Less” Medical Air Medical Systems

Appendix A - Desiccant Dryer

A.5 Replace/Repair

A.5.1 Desiccant Replacement Procedure (1 - 5 hp) (Type 1 Dryer)

WARNING:
Ensure that the dryer and associated pre-filter(s) and afterfilter(s) are valve isolated and fully
depressurized before attempting to remove or disassemble any subassemblies or components.
Failure to do so may result in serious personal injury and/or equipment damage.

WARNING:
Used desiccant material must be handled with special care. Desiccant is an adsorbent material. Used
desiccant may contain chemicals and/or gases that are hazardous, toxic and/or flammable. It is
recommended that all used desiccants be analyzed to determine content before disposal. Exercise
proper care and procedures during handling and storage of used materials. All containers must be
properly labeled and disposed of in accordance with local, state and federal regulations.

1. Shut down dryer. Close inlet and outlet isolation valves and turn off electrical power to the dryer.

2. Remove hex nuts, washers and cast tower assembly from manifold assembly.

3. Remove spring and perforated screen from top of canister

4. Unscrew desiccant canisters from manifold.

5. Dispose of used desiccant into suitable containers.

6. Replace desiccant and canister o-rings.
NOTE: DO NOT REMOVE DESICCANT FROM NYLON BAGS. Insert bag of desiccant into canister.

7. Replace tower O-rings. Set cast tower assembly onto manifold assembly.

8. Install plain washers and hex nuts. Tighten nuts in an X-pattern until towers are snug against the manifold.
Torque to 15 ft-lbs.

A-13