Dismantling The Instrument; Replacing The Dispensing Cartridge - BRAND Dispensette S Mode D'emploi

Replacement of discharge tube/ valves
Replacing valves (cont.)
Discharge valve
1.
After disassembling the discharge tube (see 'Replacing the
discharge tube', page 43), use the mounting tool to unscrew
the discharge valve (Fig. 1).
2.
Screw in the new discharge valve first by hand, then tighten it
securely with the mounting tool (the threads should no longer be
visible).
Caution:
Always install the valve provided for the specific instrument types
(see 'Ordering data', page 46). For the Dispensette
Analysis model, an identical filling valve is used, but different dis-
charge valves. To distinguish between them, the discharge valves
of the Dispensette
sure that only the discharge valve specified for the Dispensette
Trace Analysis with marking 'S' (sapphire) is used.
Dismantling instrument
Warning! The valve, telescoping filling tube, dispensing tube, and recirculation valve and recirculation
tube if present, are full of reagent! For this reason, always perform a standard cleaning
before dismantling the instrument. Follow the safety instructions (page 28)!
Note:
A function test must always be carried out after dismantling.

Replacing the dispensing cartridge

1.
Completely unscrew the safety ring of the dispensing cartridge by hand
and remove the dispensing cartridge.
2.
Screw the new dispensing cartridge into the valve block and tighten the
safety ring by hand.
3.
Carry out a function check for leaks.
Note:
The dispensing cartridge has been calibrated at the factory. Thus, cali-
bration after replacement can be omitted.
Rinse the instrument thoroughly before use, and discard the first sample
dispensed. Avoid splashes.
Depending on the application requirements, cleaning for trace analysis is
to be carried out (page 42).
The dispensing unit must not be disassembled!
44
S Trace Analysis are marked 'Pt-Ir' or 'Ta'. Be
®
1
S Trace
®
S
®