Waltron AQUALERT Aqualyzer 3051, Инструкция по эксплуатации

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Maintenance
46
Waltron User Manual
3051 Hardness Analyzer
7.2
PUMP TUBING REPLACEMENT
The peristaltic pump head is located in the fluidics section. Before replacing the tubing, please
read the hazards and dangers list in section 1 and health and reagents safe data sheets. It is also
recommended to wear adequate clothes, gloves and eyes protection and take extreme care sample
spills during tubing replacement.
Proceed as follows:
1. Stop the analyzer
2. Using the key, open the liquids enclosure
3. Manually unscrew the four wings nuts which hold the pump head in place.
4. Disconnect the pump tubing from its inlet and outlet fittings, taking extreme caution of
liquid spills
5. Slide the pump head to the left and remove the pump head
6. Separate the two halves, taking care of the rotor, and remove the used tubing, taking
caution of spills
7. Place the pump half containing the rotor in one hand and place the rollers in the 2, 6 and
10 o’ clock positions. Place tubing in the outer port and against the two rollers as shown,
keeping your thumb on the tubing to hold it in place, insert tubing key on the back of the
rotor shaft and push in as far as possible. Tubing is now positioned in deep into the pump
head body. With the key firmly pressed against the rotor, turn counterclockwise and push
down while turning until tubing has surrounded the rotor
8. Tubing is now in place. Remove key and position other pump half into the rotor shaft and
snap shut. Be careful not to pinch tubing between plastic pump halves
9. Check if the pump turns correctly using the key
10. Finger tighten the pump head slide it into the mounting screws moving the roller block
with the key or with a screwdriver until the shaft aligns with the motor drive
11. Secure the four wing nuts by finger tightening until they have a firm mounting of the
pump head
12. Restart the analyzer
Figure 7.1: Pump tubing replacement.