Pentair BIOSHIELD CLP41A6-XN Installation And User Manual page 35

Frequency
When necessary.
Parts and Equipment Required
• Cleaning Agent (dish detergent, acid cleaning agent based upon phosphoric acid (>25%)
• Acid-Resistant Transfer Pump
• Acid-Resistant Hose (used to transfer the cleaner from the container to the UV vessel)
• Fittings to connect to vessel
• Acid-Resistant Bucket
• Clean Cloth
• Acid-Resistant Drop Cloth
• Acid-Resistant Gloves
• Freshwater
• MSDS Sheet
• Personal Safety Equipment
General risk due to pressurized piping and UV vessel.
General risk due to caustic cleaning agent.
Quartz Sleeves and UV lamps are fragile and potentially dangerous if broken. Handle with care.
First Aid Measures:
In case of skin exposure to cleaning agent remove by washing with soap and water immediately.
In case of eye exposure to cleaning agent wash eyes for several minutes with water and contact a physician
immediately.
In case of ingestion of cleaning agent contact physician immediately.
Procedure
1. With the quartz sleeves still installed in the UV vessel, turn off the Power Supply Enclosure with the External ON/OFF
Switch and unplug the UV system from the electrical outlet.
2. Isolate the UV vessel from the water flow using the required isolation valves and drain the vessel completely.
3. Clear the work area and layout protective drop cloths under the UV vessel.
4. Set up the acid transfer pump and attach the acid input hose to the vessel's water drain valve.
5. Attach an acid return/overflow hose to the UV vessel's upper auxiliary service port and route it back to the acid-
resistant bucket. This will be used as the Acid Overflow Recovery Bucket.
6. With all of the hoses attached to the UV vessel and the acid transfer pump attached to the acid supply container,
pump acid into the UV vessel until full.
7. Once the UV vessel has been filled with acid, allow the acid to remain in the vessel for 30 minutes.
8. Disconnect the acid transfer pump's vessel feed hose from the transfer pump and use this hose to drain the acid from
the UV vessel through the vessel's drain valve and into an acid-resistant bucket.
9. After all of the acid has been drained from the UV vessel and the cleaning procedure completed, rinse the vessel
chamber thoroughly to avoid process water from coming in contact with the cleaning agent. The rinse water may be
taken from a water tap with the help of a hose and filled and drained through the unit's drain valve port.
10. Neutralize old cleaning agent with bases, e.g. sodium hydroxide solution, sodium carbonate solution in compliance
with all relevant rules for accident prevention and local regulations.
BIOSHIELD™ Commercial UV Disinfection System Installation and User's Guide
33