Metrohm 832 KF Thermoprep - Manual (Page 14)

3.3 Assembling the 832 KF Thermoprep
10
832 KF Thermoprep, Installation
3.3 Assembling the 832 KF Thermoprep
3.3.1 Assembling the needles
Fig. 7
Needle assembly
• Screw spacer 3 (4.832.4190, L=58 mm) into distributor 39. For special
requirements, e.g. different sample vials, custom-made spacers can
be supplied, see p. 27.
• Place PTFE distance ring 41 (supplied with the needle) on penetration
needle 42 (6.2816.070) and insert this into distributor 39 from above
(see left). Pull penetration needle 42 down as far as it will go.
• Slide hollow outlet needle 43 over penetration needle 42 from below
and fasten it to Luer-lock connector of the spacer 3.
• Connect inlet tubing 13 (6.1805.020, 52 cm) to distributor 39 from
above and fasten it. This fixes penetration needle 42 in the proper
position.
Fig. 8 Guide head with needles
To prevent possible injury the height of needle base 27, which protects
the tip of penetration needle 42, can be adjusted. Screw adjustment
nuts 44 of guide rod 12 until the needle tip is flush with the lower side of
needle base 27.
3
39
43
42
13
44
12
27
41