Uv Vessel Disassembly - Pentair BIOSHIELD PRO User Manual

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SECTION 8: MAINTENANCE
Procedure
1. With the quartz sleeves still installed in the UV
vessel, unplug the Power Supply Enclosure 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. Using the acid-resistant bucket as an acid supply
container, create a chemical solution of one part
muriatic acid to four parts water (1:4 acid-to-water
ratios).
IMPORTANT: When creating the chemical solution,
always introduce the acid to the water and introduce
the acid as close to the waterline as possible. This
helps prevent acid-to-skin contact resulting from
unnecessary splashing.
7. 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.
8. Once the UV vessel has been filled with acid, allow
the acid to remain in the vessel for 30 minutes.
9. 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.
10. 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.
11. 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® PRO UV System Installation and User's Guide

UV Vessel Disassembly

Purpose
To disassemble the vessel for internal inspection.
Frequency
UV vessel disassembly is only required if a problem
has taken place, such as, quartz sleeve breakage. It is
recommended that the QSM (Quartz Sleeve Module)
Faceplate only be removed if necessary.
Parts and Equipment Required
• Adjustable and Torque Wrenches
• Socket Wrenches
• Clean Cotton or Silicon Gloves
• Flashlight
• Personal Protective Equipment
General risk due to pressurized piping and UV
vessel!
Quartz Sleeves and UV lamps are fragile and
potentially dangerous if broken. Handle with care.