Bacharach Leakator 10 User Manual download pdf (Page 17)

Maintenance

Leakator 10

Instruction 19-9167

5.3 Replacing the Speaker

Items required:

• Medium flat-blade screwdriver

• Medium Phillips screwdriver

•

/32" Nut driver

• Replacement speaker (P/N 19-0400)

Procedure:

(See Figure 7)

1. Turn OFF instrument; then remove battery cover and

batteries.

2. Remove sensor-matching resistor.

3. Remove four screws securing rear case; then carefully lift

rear case and flexible arm assembly away from instrument,

being careful not to pull wires attached to printed circuit

board. Lay rear case face down on work area.

4. Carefully remove printed circuit board from front case;

then unplug speaker connector J2 from printed circuit board.

5. Remove two nuts and washers securing speaker to rear

case; then remove speaker.

6. Install new speaker and secure in place using the nuts and

washers that were removed in Step 5. CAUTION! Do not

overtighten the nuts!

7. Replace flexible arm assembly and rear case using the

screws that were removed in Step 3.

8. Replace sensor-matching resistor.

9. Replace batteries and battery cover.

10. Test instrument response (refer Section 4.2).

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Bacharach Leakator 10 User Manual Page 17