Page 207 - Med Plaza and Cancer Center

"Oil-Less” Medical Air Medical Systems

Appendix A - Desiccant Dryer

A.4 Maintenance

WARNING:
To protect the lives of patients, always notify the appropriate medical facility staff before performing any
maintenance or service procedures on the air system. Compressed air levels may be affected during
maintenance or service procedures.

WARNING:
Compressed air can be dangerous unless safety precautions are observed in the use of compressed air
and compressed air equipment. Completely vent the internal air pressure to the atmosphere before
disassembling any subassemblies or components and before doing any work on compressed air
equipment. To vent internal air pressure, follow the maintenance shutdown instructions.

A compressed air dryer should give long and trouble free operation if the recommended preventative maintenance
program is carried out.

The following is a recommended schedule:

1. Quarterly procedure - Clean the auto drain in the coalescing filter. Monitor the backpressure on the purging
tower. If the gauge reads more than 0 psig (when purging), check the purge muffler for blockage and replace if
necessary.

2. Annual procedure - Replace all filter cartridges and purge muffler(s). Check the automatic drain function in
the coalescing filter. Refer to chart located in Section A.4.1 for correct system size and part numbers. Contact
your local distributor for parts.

3. Five-year procedure - Change all annual parts. Change desiccant, check valves, and purge valve(s) See chart
in Section A.4.1 for correct system size and part numbers.

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