Hach 1950Plus Instrument Manual page 114

Uv process toc analyzer
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Section 7
Figure 35 Pump Module Assembly
1.
Pump Module Assembly
2.
Acid Pump Head
3.
Sample Pump Head
4.
Dilution Pump
5.
Wing Nut (four per pump head)
Page 114
Pump Tube Replacement
tubing retainer grooves up. Shift the pump head slightly until it snaps on
the alignment pins (if present).
6.
7.
8.
9.
10. Connect any reduction tubing using barb reducers as dictated by the
pump kit.
11. Secure with the four screws provided. Finger tighten only.
12. Slide the first pump head onto the mounting screws.
13. Place the key in the slot on the rotor shaft. Twist the shaft to align the tang
on the rotor shaft with the slot in the motor drive shaft. Shift the pump
head housing around until it drops over the alignment pins, if present
(Figure 38 on page
116).
14. Repeat the installation steps for each additional pump head, aligning the
pump head tang with the slot on the previously mounted pump head.
15. Secure the four wing nuts. Finger tighten only.
Pump Module Prop (One on each side of pump module)
Captive Screw (4)
Persulfate Pump Head
Resample Pump Head
UVTOCMaintenance.fm

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