Hach-Lange SIGMA SD900 Refrigerated Sampler and All Weather Refrigerated Sampler User Manual - Manual (Page 79)

77
Maintenance
6. Clean the silicone residue from the interior of the pump housing
and from the rollers (see section 6.3.3 on page 79 ).
Installation procedure:
1. Connect one end of the tubing to the liquid sensor fitting. Press
the tubing into the pump tube guide ( Figure 33 ).
2. Press the tubing into the upper pump tube track. Make sure
that the alignment dot is in line with the upper pump tube track
as shown in
Figure 33 .
3. Hold the tubing with one hand while rotating the pump rotor to
guide the tubing around the rotor ( Figure 33 ). The guide pins
will push the tubing into place.
4. Press the tubing into the lower pump tube track. Make sure that
the alignment dot is in line with the lower pump tube track as
shown in
Figure 33 .
5. Close and secure the pump cover with the thumbscrew.
6. Connect the open tube end to the tube fitting on the sampler
( Figure 34 ).
Figure 32 Pump tubing measurement
1 To liquid sensor 4 To tube fitting on refrigerator
2 Alignment dot 5 95.3 mm (3.75 in.) for refrigerated sampler,
120.7 mm (4.75 in.) for all weather refrigerated sampler
3 Inside pump body 6 590.6 mm (23.25 in.) for refrigerated sampler,
616 mm (24.25 in.) for all weather refrigerated sampler