Uv Vessel Disassembly - Pentair BIOSHIELD Installation And User Manual

SECTION 8: MAINTENANCE
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. 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.

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 Safety 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.
Procedure
IMPORTANT: DO NOT Attempt to remove the QSM
Faceplate with the quartz sleeves
assembled. ALL lamps and quartz
sleeves MUST be removed before
disassembling the QSM Faceplate
from the UV vessel.
1. Turn off the Power Supply Enclosure with the
External ON/OFF Switch and unplug the UV system
from the electrical outlet.
2. Redirect water flow from the vessel using isolation
valves and drain the vessel completely.
3. Remove UV lamp(s). See Page 23 for removal
instructions.
4. Remove quartz sleeve(s). See Page 24 removal
instructions.
BIOSHIELD Commercial UV Sterilizer Installation and User's Guide
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