9
NORMAL OPERATION
Configuration for Ultra UV2 units installed with bypass.
During normal operation the inlet valve #2 and
outlet valve #3 should be completely open and the
bypass valve #1 should be completely closed. Any
partial opening of the bypass valve can drop the flow rate
below the required minimum and cause damage to the
Ultra UV2 unit. This instruction applies to all systems with
a single speed or with a variable speed pump. This type
of damage is not covered under the factory warranty.
WINTERIZE / SERVICE OPERATION
Configuration for Ultra UV2 units installed with bypass.
Bypass operation is used for winterization or servicing/
replacing the Ultra UV2 unit. The bypass valve #1
should be full open and the inlet valve #2 and the
outlet valve #3 should be completely closed.
WINTERIZATION OF YOUR ULTRA UV2 UNIT
If you are in a sub freezing climate you must
winterize the Ultra UV2 using either option #1 or
#2. Failure to do so will cause damage to the unit,
which is not covered under the warranty.
Option #1 - Removing the unit for the winter: Turn off
the power to the unit. Disconnect the unions on the
plumbing to ensure that the unit is completely drained.
Now, with the power off, disconnect the unit from its
power source and place the drained unit in a safe
place that has a sustained temperature above freezing.
Reinstall after the temperatures are considerably above
freezing.
Option #2 - Leaving the unit in place for the winter: Turn
off the power to the unit. Disconnect the unions on the
plumbing to ensure that the unit is completely drained.
There is a cup in the bottom of your unit that the quartz
tube nests in. This cup does not drain completely (Fig.
30). To remove the water from this cup you must
first remove the lamp array and quartz tube Fig.
22 (See page 4). Turn the unit on its side with the
unions facing down until all of the water has drained.
Reconnect the unit, the quartz tube, lamps, and cover.
You may store the lamps and quartz tube in a safe place.
Fig. 22
Unions
Cup
Filter
To Heater
or Pool
Pump
Bypass
Valve #1
Closed
Inlet Valve #2 Open
Outlet Valve #3 Open
Filter
To Heater
or Pool
Pump
Bypass
Valve #1
Open
Inlet Valve #2 Closed
Outlet Valve #3 Closed
Fig. 20
Fig. 21