AOpen DE7200 Series Provozní pokyny stáhnout pdf (Strana 70)

MAINTENANCE

5-8 31 Dec 13

DE-7200VFDCentrifuge

Visual Inspection and Checks (Cont’d)

3. Check condition of the purge unit air filter element, and clean or replace as necessary.

4. At least every two years, check the following additional items:

a. There are no unauthorized modifications.

b. Quality of the air supply is correct (refer to Compressed Air in Section 3).

c. Approval labels are legible and undamaged.

d. Power to the centrifuge is shut down upon loss of air pressure.

Initial Purge Time Setting

The initial purge time is factory-set to 16 minutes. If purge time varies excessively, the timer

system inside the purge unit may be adjusted to restore the correct interval. The time intervals

marked on each valve are additive. In the photo below, the timer shows that total purge time

available is 38 minutes (16+8+8+4+2). If testing reveals that purge time has varied from the 16-

minute setting, the purge time should be changed by opening or closing one or more valves.

When making an adjustment, note that valves are either open or closed; no intermediate setting is

possible.

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AOpen DE7200 Series Provozní pokyny Strana 70