Consumable Replacement Procedures; Draining The Water Bottle (A); Replacing The Deioniser Cartridge And 100 Micron Water Filter (B); Replacing The Environmental Filters (C) - Parker 20H Guide D'utilisation

5.3 Consumable Replacement Procedures

5.3.1 Draining the water bottle (A)

Locate the drain port on the rear of the generator and insert the drain line (1). Ensure that the line is locked in position to obtain a complete seal.
Leave the water to drain into a suitable container, then press the lock (2) downwards and remove the line.
In order to prevent contamination and prolong the life of the cell do not reuse the old water.

5.3.2 Replacing the deioniser cartridge and 100 micron water filter (B)

Change the deioniser cartridge every 4000 hours (6 months), or if it has become contaminated.
Switch the generator into Stand by mode and remove the top front cover and the water bottle cap.
Wearing disposable gloves, remove the deioniser cartridge (3) and discard. Extract the 100 micron water filter (4) using the H
tool (5). Push the tool over the filter so that the webs on the filter fit into the slots on the end of the tool. Unscrew the filter and remove it from the
water bottle.
Fit the replacement filter and ensure that it is secured into the water bottle. Refill the water bottle with deionised water, ASTM II, >1 M , <1 S,
filtered to <100 m, as described below, and fit the replacement deioniser cartridge.
Refit the water bottle cap and the top front cover and restart the generator.

5.3.3 Replacing the Environmental Filters (C)

Remove the three environmental filters (6) from the vent ports by pushing the push in fitting (7) upwards to release. Fit the replacement filters
and check that they are secure.
Note: Environmental filters should be changed every six months as there is no visual indication of exhausted filters.

5.3.4 Replacing the Desiccant Cartridge (D)

Depressurise the generator as specified in "Stopping the equipment and depressurising" on page 15.
Remove the top front cover. Break the seal of the cartridge using a sise 19mm open ended spanner (wrench) (8) and then unscrew it by hand.
Remove the cartridge and fit the replacement. The new cartridge should be tightened by hand and then nipped up, by a further 1/8th of a turn,
using the 19mm spanner (wrench).
Refit the top front cover and the outlet fitting. Restart the generator and initiate a self test as described in "Generator Self Test" on page 14.

5.3.5 Filling the water bottle (E)

The use of any water, other than deionised water (ASTM II, >1 M , <1 S, filtered to <100 m) within this generator will damage and reduce the
life time of the hydrogen cell.
Remove the top front cover and the water bottle cap (9). Fill the water bottle using fresh deionised water to a level approximately 15mm below
the upper lip of the neck of the bottle.
If the generator is powered during refilling, an audible and visual indication will be given by the generator when the correct level is reached, and
the LCD will display "Water Full" message. Once full replace the water bottle cap and top front cover.
Note: If the water has been changed due to high conductivity, the deioniser cartridge must also be changed.
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