21
Electrolyser Cleaning
The electrolyser (electrolytic cell) may require acid cleaning periodically to remove the presence of water hardness scaling and
also any metal deposition e.g. iron and manganese deposits.
One of the reasons the Hyprolyser
®
may alarm in “VOLTAGE HIGH” is due to the electrolyser becoming heavily
scaled or fouled with other deposits.
Precondition for action:
Perform Short-term shut down procedure.
Perform the following working steps:
1.
Remove the electrolyser cell enclosure window by removing the vertical window bead retainers and then the horizontal
window bead retainers.
2.
Carefully loosen the cell inlet and outlet union collars until the cell can be carefully rested on to the base of the electrolyser
chamber with the inlet and outlet connections facing upward to prevent further spillage.
3.
Connect the acid wash cleaning system to the electrolyser in accordance with the operating instructions provided with the
HYPROLYSER
®
acid washing kit.
4.
Completely rinse out and drain the electrolyser with water prior to refitting into the electrolyser chamber.
5.
Refit the electrolyser cell to the union assemblies taking care not to over-tighten the union collars.
6.
Ensure the electrolyser chamber window is refitted correctly back into position.
7.
Ensure the water supply is turned on to the system
8.
Perform start-up.
Electrolyser acid wash carried out successfully.
Finishing Maintenance
Perform the following working steps:
1.
Make a note of the date and scope of the maintenance performed.
2.
Complete any operational, service or commissioning log sheets associated with the HYPROLYSER
®
System and as per
any associated documents.
3.
Attach a sticker displaying the maintenance date to the system.
4.
To assure correct start-up procedures, refer to the “Start-up” section.
Maintenance completed.
