Siemens Pacemaker UM344-2 Bedienungsanleitung PDF herunterladen (Seite 117)

UM344-2 CALIBRATION AND MAINTENANCE

September 1995

6.2.2 Transmitter Exterior Inspection

The frequency of inspection will depend on the severity of the transmitter's environment.

1. Inspect the exterior of the transmitter enclosure for accumulated oil, dust, dirt, and especially any

corrosive process overspray.

2. Check that each enclosure cap is fully threaded onto the enclosure, compressing the O-ring between

the cap and the enclosure. The O-ring must not be cracked, broken, or otherwise damaged.

3. If a digital meter is installed, inspect the protective viewing glass in the enclosure cap for cleanliness

and damage. A cracked or punctured glass must be replaced; see Section 6.4 and the Parts List at

the back of this Manual.

4. Inspect both enclosure conduit entrances for possible moisture leaks. An unused conduit entrance

must be plugged and sealed. Inspect the cable clamps of all watertight cable conduits for loose

clamps and deteriorated sealing material. Tighten clamps and reseal as necessary.

5. If a conduit drain is installed, inspect the drain seals for obstructions.

6. If subjected to vibration, inspect all transmitter mounting hardware for tightness. Tighten as

necessary.

7. Inspect pushbutton seals for cracks or punctures. Defective seals must be replaced.

6.2.3 Transmitter Exterior Cleaning

After an exterior inspection of the transmitter, the enclosure can be cleaned with the transmitter operating.

1. Clean the enclosure (except enclosure cap glass) with a mild, nonabrasive liquid detergent, and a soft

bristle brush, sponge, or cloth. Rinse the weatherproof enclosure with a gentle spraying of water.

If the transmitter is subjected to heavy process overspray, keep the enclosure free of excessive

accumulation of process residue. Hot water or air may be used to flush away process residue if the

temperature of the cleaning medium does not exceed the operating temperature of the transmitter as

listed in Section 8.3.5 Environmental.

2. Clean enclosure cap glass with a mild nonabrasive liquid cleaner and a soft, lint-free cloth.

6.2.4 Transmitter Enclosure Interior Inspection

Remove the enclosure cap periodically to inspect the interior of the enclosure's terminal compartment.

Because the enclosure is sealed, there should be no accumulation of dust, dirt, or water (condensate) in

the interior. If condensate is present, a conduit drain must be installed. See Figure 4-11.

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Siemens Pacemaker UM344-2 Bedienungsanleitung Seite 117