Heath-consultants Hi Flow Sampler Manuel d'utilisateur télécharger pdf (Page 49)

Hi Flow



Sampler Maintenance

Instruction 0055-9017 49

4.6 Pump Replacement

The pump located in either the leak-gas or background-gas sensor assembly (see

Figure 4-5) may become inoperative due to water or solid particles getting into the

valves. This will require replacement of the pump to correct.

Equipment Required:

•

/64" Allen Wrench

• Replacement Pump Assembly (P/N 0055-0061)

Procedure:

1. Remove cover per Section 4.3.

2. Back off the pump-bracket screw using a

/64" Allen wrench; then rotate bracket

arm to free pump. See Figure 4-6.

3. Unplug pump connector from printed circuit board and lift pump straight up.

4. Install the new pump by lining up the pump’s inlet and outlet tubes with the two

flow block holes and pushing into place. Swing bracket arm over pump and

tighten—realigning pump as necessary to make a proper fit.

5. Replace cover that was removed in Step 1.

Figure 4-6. Sensor or Pump Replacement

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Heath-consultants Hi Flow Sampler Manuel d'utilisateur Page 49