Amprobe WT-50 Benutzerhandbuch - Seite 14

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MAINTENANCE AND REPAIR

If there appears to be a malfunction during the operation of the meter, the

following steps should be performed in order to isolate the cause of the

problem.

1. Check the battery. Replace the battery immediately when the symbol

" appears on the LCD.

2. Review the operating instructions for possible mistakes in operating

procedure.

Except for the replacement of the battery, repair of the meter should be

performed only by a Factory Authorized Service Center or by other qualified

instrument service personnel. The front panel and case can be cleaned with

a mild solution of detergent and water. Apply sparingly with a soft cloth and

allow to dry completely before using. Do not use aromatic hydrocarbons,

Gasoline or chlorinated solvents for cleaning.

To Replace Membrane

Follow the steps below to replace a new membrane when the meter cannot be

calibrated or the membrane is damaged.

1. Prepare a new membrane.

2. Unscrew the probe guard.

3. Remove the membrane from the membrane lock cap.

4. Remove the O-ring and membrane lock ring.

5. Rinse the membrane cap and lock ring in the tap water.

6. Install a new O-ring.

7. Install a new membrane.

8. Cover with the membrane lock ring and lock cap. Reattach the probe guard

and complete membrane replacement.