Hallett Instruction Manual
Released on 8-Aug-19
– GH2B
Page 34
UV Pure Technologies Inc. © 2019
to reach full power. Continue to operate the unit until the lamps reach
full power.
The UV intensity value can be observed to confirm output levels.
It is recommended for new LPHO lamps to be operated initially 3-4 hours as
a burn-in to achieve lamp stability.
Draining the Unit
The Hallett does not normally require draining for routine operation or lamp
replacement. Draining is necessary to disassemble the system, to protect
against freezing, or to remove poor-quality water.
Tools Needed
Pipe wrench
Step 1:
Shut off the water supply and relieve the pressure.
Step 2:
Shutdown and
unplug the unit.
Step 3:
Place a bucket under the unit to collect the water.
Step 4:
Open a tap downstream of the unit to vent.
Step 5:
If you have installed an optional drain valve, open the drain valve. If
you do not have an optional drain valve, disconnect the flexible hose or piping
at the bottom port to allow the system to drain for a few minutes. Note that
the water will not flow backwards through the optional automatic valve.
Step 6:
When draining is complete, close the drain valve or reconnect the
flexible hose or pipe connections.
Step 7:
Close any taps that were previously opened.
Cleaning the Unit
UV Pure has designed the automatic quartz sleeve cleaning device within the
Hallett systems to virtually eliminate the disassembly and cleaning of the
quartz sleeve - the quartz sleeve will remain clear and transparent as glass. If
a component of the cleaning device fails, such as the wiper motor, or in
extreme water cases with unique water chemistry, the quartz sleeve may
become fouled and require manual cleaning. In this situation the Dose Alarm
will arise and alert you to the unsatisfactory conditions. Follow the steps
below to inspect the quartz sleeve and disassemble the unit for cleaning.
Determining the Need for Cleaning
Step 1:
Shutdown and unplug the unit.
Step 2:
Open the UV chamber as described in
Accessing UV Chamber
section.
Step 3:
Examine the quartz sleeve both inside and out
– See Figure 7.2. If it
UV
UV
UV
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