3. Place the o-ring over the exposed end of the glass thimble and seat the o-ring firmly against the
thread, as shown above.
4. When the o-ring is seated, install the knurled nut onto the chamber to seal the o-ring against the
sealing nut. NOTE: Firmly hand tightening is sufficient to seal these chambers without the use of
tools – DO NOT APPLY THREAD TAPE OR SEALANT GLUE TO THE END THREADS.
Caution: Overtightening the end nuts may cause the glassware to crack.
5. You can look through the open end of the nut to see if the o-ring is seated correctly. There will likely
be a slight gap between the end edge of the thimble and the recessed stop-end of the knurled nut -
this is normal in most cases (for the 2K & 4K Systems). On the larger GT7-8K & GT7-9K systems,
the spring holds the quartz under tension, so there may not be a gap once firmly tightened.
From this point, the water supply should be turned on to pressurise the chamber and identify if there are
any leaks from the plumbing connections or from the thimble. If leaking occurs from the thimble, it is
possible that it may only be a slow beading leak which must to be rectified before installing the lamp.
For vertical installations, it is extremely important that there are no slow leaks, as over time, these will fill up
the thimble with water and cause a short in the lamp, which can result in injury or damage to the lamp &
ballast. This is not covered under warranty.
If any water is present on the thimble or chamber from the installation process, it will need to be thoroughly
dried before continuing with the installation.
II. Ballast Operation
GT7-8K-PS
– The 10W – 40W ballast is straightforward for operation. It features a lamp status & failure
indicator light along with an audible alarm should there be a fault. The ballast will automatically reset when
turned on/off.
GT7-16K-PS
- In order to guarantee user safety, this ballast features complete control and protection
functions which are caused by;
1. UV Lamp exceeding life cycle (365 Days).
2. UV Lamp Failure.
3. Working beyond rated voltage and load.
This ballast is designed to work with germicidal UV lamps. Do not mistake the input/output wire to avoid
ballast failure.
•
Ensure the voltage is within the specification of the ballast.
•
Match the UV lamp with the power output of the ballast.
•
Ensure the connections (plugs) are fitted correctly – the earth wire must be affixed securely.
Working Condition:
Green LED light of ballast ON, No Red LED, Digital Display indicating # of Days
Fault:
Red LED on / Flashing, Audible alarm
Working Timer Function:
The First timer indicates number of operating days from 0 to 9999, the Second
timer indicates UV lamp working life which is a countdown from 365 days to 0. The UV lamp working life is
set by default but you can switch between these indicators by pressing and holding the “SELECT” button
for 2 Seconds (repeat this to return to Default).
UV Lamp Replacement Alarm:
Once the UV lamp working day timer reaches 0, the digital display will
show “A3”. The Red LED light will flash and there will be an audible alarm to remind you to change to a
new lamp.
Ballast Reset:
When the lamp has been changed, press and hold the “SELECT” button for 10 seconds
until the display shows “RSET” – Continue holding for a further 5 seconds until the display shows “0365”
and you will hear an audible beep. Release the button and the timer is successfully reset.
III. Installing the UV Lamp
When, and only when the chamber and thimble are deemed to be water-tight and free of leaks, can the
lamp be installed. Handle the lamp only by the plastic end caps, and support it by both ends.