Table of Contents
Advertisement
...8 MAINTENANCE
e) Discard old reagent and standard solutions. Clean containers
thoroughly before refilling with fresh solutions – see Section
8.1.
✶
Note. It is vital that the containers are not topped up.
f) Examine the sample input pipe for leaks and deterioration.
g) Check the condition of the sample filter (if fitted) and fit a new
one if necessary. Ensure that new filters are fitted correctly by
taking note of the flow directions indicated on the filter bodies.
h) Ensure the drain is in good order and free from obstruction.
8.2.3 Twelve Monthly
a) Service pump, tubing and capstans – see Section 8.2.6.
b) Replace all internal plumbing tubing – see Section 8.2.7.
c) Carry out the normal 4 weekly schedule not already covered
above.
8.2.4 Consumables Spares Kit
The monitor is supplied with a consumable spares kit (see
Section 10). This consumable spares kit includes all the
components which are recommended for replacement annually
(refer to the details in the spares kit). This annual refurbishment
ensures a high level of reliability from the monitor over a period of
many years. The kit should be reordered when used so that all the
items are available throughout the following year's operation. The
consumable spares kit is in addition to the electrode spares kits
for the chloride electrode.
The kit contains the following:
•
one set of pump tubing
•
one set of pump capstans
•
a complete set of plumbing tubing
•
sundry items – 'O' rings, tube connectors, pump tube
bungs and fuses
•
plastic syringe and bottle brush – for cleaning pipework,
valves, flowcell and constant-head unit.
30
8.2.5 Fitting the Electrodes
The chloride electrode is supplied with a protective end cap to
prevent the tip from being scratched or chipped. To prepare for
use, remove the end cap and carefully rinse the tip in distilled
water.
a) Fit the chloride electrode into the plastic holder supplied, slide
the retaining 'O' ring over the end of the electrode body and
insert it into the sloping aperture of the flowcell. Screw down to
compress the 'O' ring. Push the electrode down as far into the
flow cell as practical without fouling the stirrer drum.
b) Connect the chloride electrode lead to the co-axial socket
above the flowcell on the right hand side.
c) The reference electrode should have the rubber stopper
removed from the refill aperture. Remove teat and top-up
electrode with filling solution if required.
d) Fit the 'O' ring supplied over the reference electrode body and
insert the electrode into the left hand chamber of the flowcell
so that the ceramic plug is between 5 and 10 mm from the
bottom.
e) Connect the reference electrode lead to the co-axial socket
above the flowcell on the left hand side.
Advertisement
Table of Contents
