TetraPond GREENFREE UVC-5 Manual

IMPORTANT SAFETY INSTRUCTIONS
READ AND FOLLOW ALL SAFETY INSTRUCTIONS
WARNING: To guard against injury, basic safety precautions should
be observed, including the following:
1. Read and follow all safety instructions.
2. DANGER: To avoid possible electric shock, special care should be
taken since water is employed in the use of this equipment. For each
of the following situations, do not attempt repairs yourself:
A. If the appliance falls into the water, do not reach for it! First
unplug it and then retrieve it. If electrical components of the appliance
get wet, unplug the appliance immediately.
B. Do not operate any appliance if it has a damaged cord or plug, if
it is malfunctioning, or if it is dropped or damaged in any manner.
3. When putting on or taking off parts, always unplug an appliance
from the outlet first. Grasp the plug and pull to disconnect; never yank
the cord.
4. Only use an appliance for its intended use. Non-recommended
attachments that are not sold by the appliance manufacturer may
cause an unsafe condition.
5. Read and observe all the important notices on the appliance.
6. Do not allow children to handle this equipment. This equipment
should be kept away from children.

Grounding Instructions

This appliance must be grounded. In the event of a malfunction or
breakdown, grounding will reduce the risk of electric shock by providing
a path of least resistance for electric current. This appliance is
equipped with a cord that has an appliance grounding conductor and a
grounding plug. The plug must be plugged into the appropriate outlet
that has been installed and grounded in accordance with all local codes
and ordinances.
WARNING:
Improper connection of the appliance-grounding
conductor can result in a risk of electric shock. Check with a
qualified electrician or service representative if you do not know
whether the appliance is properly grounded. Do not modify the
plug provided with the appliance. If it will not fit the outlet, have
a proper outlet installed by a qualified technician.

Ground-Fault Circuit-Interrupter Protection

To comply with the National Electrical Code (NFPA 70), and to provide
additional protection from the risk of electric shock, this unit should
only be connected to a receptacle that is protected by a ground-fault
circuit-interrupter (GFCI).
Extension Cords
Use only extension cords that are intended for outdoor use. These
extension cords are marked: "Acceptable for use with outdoor
appliances; store indoors while not in use." Use only extension cords
that have an electrical rating that is not less than the rating of the
product. Do not use damaged extension cords; examine extension cords
carefully before use and replace if damaged. Do not abuse extension
cord and do not yank on any cord to disconnect. Keep cord away from
heat and sharp edges. Always disconnect extension cords carefully;
disconnect them from the receptacle before disconnecting the product
from the extension cord.
SAVE THESE INSTRUCTIONS

Safety Tips

• Never submerge the unit in water.
• To prevent overheating, always unplug the unit if there
is no water running through it.
• This unit produces harmful ultra violet light. Do not
look directly at the unshielded bulb as damage to the
eyes may occur. Monitoring of lamp operation should
only take place by looking through the viewing window
on the unit.

UV CLARIFIER COMPONENTS

*Rubber O-Rings
for Quartz Sleeve
+ High Performance
Screw Cap
UV Bulb
*Bulb Protector
Ballast
* Spare Parts Available from Tetra
+ Replacement Parts Available from Retailer
*Multi-Diameter
Inlet/Outlet
Stainless Steel
Hose Connector
Insert
*Hose Coupling
Ring
*Sealing Ring for
Hose Connector
+ Quartz Glass
Housing
Tube
Viewing
Window
*Sealing Ring for
*Hose Coupling
Hose Connector
Ring
*Multi-Diameter
Inlet/Outlet
Hose Connector
GREENFREE
UVC-9
UVC-5
WARNING:
To reduce the risk of electrocution, keep all
connections dry and off the ground. Do not touch plug with
wet hands.
This product conforms with the applicable provisions of The Code
of Federal Regulations (CFR) including Title 21, Chapter 1, Sub
part J - Radiological Health.

How the UV Clarifier Works

• The clarifier works by exposing single-celled algae to very high levels
of ultra violet (UV) light as the pond water containing them is pumped
through the unit.
• The algae die and clump together, making them easier for the filter
to remove.
• While the UV clarifier will destroy the algae, water clarity is also
dependent on adequate pond filtration to trap and remove the dead
algae.
• Dead algae may clump, sink and accumulate at the bottom of the
pond. It can be removed with a fine mesh net.
• For most ponds with normal levels of green water, the cleaning
process should take about one week; however, with thicker algal
blooms this may take 2-3 weeks.
• The clarifying process can be made more efficient by regularly
carrying out partial water changes (up to 25% of pond volume).
• Always add a dechlorinator water treatment when adding tap water
to a pond.
Turn unit off when treating the pond with any fish medication or
remedy.

SELECTING THE RIGHT EQUIPMENT FOR YOUR POND

Determining Pond Size:

In order to determine the gallons in your pond, use this easy
calculation:
Length (ft) x Width (ft) x Average Depth (ft) = Cubic Feet
Cubic Feet x 7.5 = Gallons

UV Clarifier Size Selection:

Use the chart below to help determine the proper size UV clarifier using
your pond size.
It is still safe if the UV clarifier selected is stronger than what is
specified for your pond size.

Pump Selection:

It is important to control the water through the UV clarifier with a
flow rate that is within ±10% of the optimal flows shown below in the
chart. The UV clarification process will be most effective at these flows.
Water flow that is too fast will minimize the "dwell time" the algae
cells have in front of the lamp, thus making it less effective. The flow
rates should be measured on the return flow out of the UV clarifier.
Pond Size
660 gallons / 2500 liters
1800 gallons / 6800 liters
4400 gallons / 16,600 liters
8800 gallons / 33,300 liters

Measuring Water Flow:

It is highly recommended that the flow to and from the filter be
measured using the following technique.
Timing water flow:
A. Record the number of seconds it takes to fill a 5 gallon bucket
B. Divide the number of seconds into 3600, and then multiply by 5 gallons.
Example: If it takes 20 seconds to fill a 5 gallon bucket.
Seconds an hour Seconds to fill bucket
3600 ÷ 20
Pump packaging instructions will give you guidelines on the flow rates
(gal/hr) that can be expected at various pumping heights, as measured
from the water surface in which the pump is located. Use this as a
starting point, but measure the water going to and from the filter using
this timing method.
Warranty information and mail in warranty card on reverse side.
© 2010 Tetra Holding (US) Inc.
3001 Commerce Street, Blacksburg, VA 24060-6671
Consumer Support Service (800)526-0650
UV CLARIFIERS
®
UVC-36
UVC-18
UV Clarifier Optimal Flow
5 watt 330 gal/hr / 1250 l/hr
9 watt 900 gal/hr / 3400 l/hr
18 watt 2200 gal/hr / 8300 l/hr
36 watt 4400 gal/hr / 16,600 l/hr
(determining gallons per hour)
Bucket Size Flow gallons per hour
x 5 gallons =
Tetra® is a trademark
www.tetrapond.com
900 gal/hr