Bacharach PCA3 Spezifikationen PDF herunterladen (Seite 82)

PCA



3 Manual

82 0024-9473 Rev 4

CHAPTER 7. MAINTENANCE

7.1. Overview

Customer maintenance of the PCA

3 is limited to the following:

•

Battery replacement (see page 21)

•

Sensor re-calibration (see page 66)

•

Water trap / filter assembly maintenance (see pages 53 and 87)

•

Sensor replacement (see page 88)

•

Cleaning the probe (see page 91).

All other maintenance should be performed by an authorized Bacharach Service

Center. Refer to Service Centers on page 99.

7.2. PCA

3 Disassembly

The following procedure describes and illustrates how to disassemble the

analyzer.

7.2.1. Tools Required

•

Medium Phillips Screwdriver

7.2.2. Procedure

1. Unplug all thermocouples from bottom of analyzer.

2. Remove battery cover and then remove batteries.

NOTE: In Step 3, if the sensors are not being replaced, leave the

tubing connected to each sensor’s gas cap, being careful not to put

unnecessary strain on the tubing during the disassembly process.

3. Pull off sensor retainer; and then unplug all sensors.

4. Lay analyzer face down on a padded work surface; and then using a

medium Phillips screwdriver, remove the unit’s four rear-case screws.

5. Lift rear case from analyzer and set aside.

6. Unplug electrical connectors J8, J9, and J14 from printed circuit board.

CAUTION: In Step 7, note that there is tubing connected between

the bottom hose connector plate and the pressure sensor on the

printed circuit board. Do not put unnecessary strain on this tubing

during the disassembly process.

7. Carefully lift battery and pump chassis, along with the bottom hose

connector plate, from analyzer.

8. Lift printed circuit board from analyzer.

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