MODEL TCL

SECTION 10

 

MAINTENANCE

10.3.4 Replacing the air pump

WARNING

 

1. Disconnect power to the analyzer.

 

HAZARDOUS

 

 

 

2. Refer to Figure 10-12. Disconnect the reagent

 

VOLTAGE

 

 

 

and air injection tubes. Disconnect the suction

 

 

 

CAN CAUSE

and discharge tubing by turning the Luer fitting

in the direction shown in the figure. Disconnect

SEVERE INJURY

OR DEATH.

the air pump inlet tubing from the barbed fitting

DISCONNECT

in the bottom of the enclosure.

POWER BEFORE

 

SERVICING.

3. Remove the four screws (circled in Figure 10-13)

 

 

9241136/B

 

 

 

 

 

 

holding the air pump access panel. Pull out the pump and panel.

4.Disconnect the air inlet and outlet tubing from the air pump. See Figure 10-14.

5.Remove the five screws (surrounded by squares in Figure 10-13) holding the air pump to the access panel.

6.Remove the four screws holding the wiring access panel.

7.Disconnect the air pump power wires from the terminal strip. See Figure 10-15. Discard the old air pump.

8.Remove the five screws holding the rubber base of the replace- ment air pump to the body.

9.Using the five screws removed in step 6, attach the replacement air pump to the access panel.

10.Connect the air pump power wires to the terminal strip.

11.Replace the wiring access panel.

12.Connect the air inlet and outlet tubing to the air pump. See Figure 10-14. The conical end of the check valve points in the direction of the air flow.

13.Replace the air pump access panel.

14.Connect the sample pump tubing to the pump. Connect the reagent and air injection tubing. Connect the air inlet tubing to the barbed fitting at the bottom of the enclosure.

FIGURE 10-12.

FIGURE 10-13.

check valve

air outlet

Model option -11 115 Vac only Model option -12 230 Vac only

air inlet

FIGURE 10-14.

56

FIGURE 10-15.

Page 64
Image 64
Emerson TCL instruction manual Replacing the air pump

TCL specifications

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