Altec AIR MHR Series, Руководство пользователя

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MAINTENANCE CAUSE INJURY SHOULD YOU ATTEMPT TO DISASSEMBLE
WHILE PRESSURIZED.
Purge Muffler
At high pressures a clogged muffler could result in a high backpressure and could result in mechanical failure or
personal injury. For this reason the purge muffler must be periodically checked for any restrictive debris. If pres-
sure is observed on the offline tower replace muffler immediately. TO AVOID INJURY, DEPRESSURIZE DRY-
ERRFORMI
Purge Valves
Should either of the normally closed purge valves fail to operate check the following:
1. Check air signal to valve.
2. If air signal is present; disassemble, clean and replace diaphragm and seals.
3. If no air signal is present; see solenoid valve information in Maintenance Section.
Inlet Valves
Should either of the normally open inlet valves fail to operate check the following:
1. Check air signal to valve.
2. If air signal is present; disassemble, clean and replace diaphragm and seals.
3. If no air signal is present; see solenoid valve information in Maintenance Section.
Outlet and Purge Check Valves
NOTE: Signs of a faulty outlet and/or purge check valve include;

Failure to Depressurize Alarm

System air is being drained and compressor is running at below normal efficiency.

Periodically check the outlet and purge check valves for an absolute seal. Procedure:

Close purge adjustment valve. Verify offline tower pressure is 0 PSIG.

Check offline purge muffler for airflow. No airflow should be present.

If no airflow is present, the outlet and purge check valve have a positive seal. Repeat procedure next
cycle to check opposite outlet and purge check valves

If airflow is present, the outlet and/or purge check valves do not have a positive seal. Clean and/or re-
place corresponding check valves. See air flow diagram for corresponding check valves.
Pilot Air-Filter (Located at Outlet)
For maximum filtration efficiency, service the element 2x per year.
PREVENTATIVE MAINTENANCE SCHEDULE
Daily

Check and record inlet pressure, temperature and flow.

Verify that it is within specifications.

Check tower pressure gauge readings within operating tol-
erance.

Check tower pressure gauges for proper dryer cycling.

Verify that pressure in purging tower is 5 PSIG or less.

Verify that prefilters and off-line differential pressure is
within operating limits.
Semi-Annually

Check outlet dew point.

Blow down relief valves.
Monthly

Check your operating conditions: inlet flow, inlet pressure,
and inlet temperature.

Check prefilters and after filters.

Check dryer cycle and sequence of operations, (i.e. drying and
regenerating).
Annually

Check desiccant and replace if necessary.

Inspect and clean pilot operated valves and re-
place packing as necessary.

Inspect and clean solenoid valves, check
valves and purge lines.

Test electrical components, replace as neces-
sary.
Quarterly (3 Months)

Check pilot air filter element and clean.

Replace prefilter and afterfilter elements.
3-Years

Replace desiccant (if necessary)