KELCO T20, Инструкции по установке и программированию

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The T20 timer is supplied unlocked and pre-loaded with a simple program. It is
set up with a 5 second start override time and a 5 second run-on time. All other
functions are turned off. With the default program loaded, the T20 will start a
pump in spite of an initial lack of flow, run the pump for 5 seconds and expect
to establish flow past the paddle of its remote flow switch within this start up
time. Given flow is established it will then run the pump continuously while flow
is present and it will shut the pump down if flow is interrupted for more than 5
seconds or if flow stops completely.
You can restore the T20 to this default state at any time by pressing and holding
down the (P) button and pressing the (R) reset button at the same time. Release
the (R) button and then release the (P) button. The timer light will then flash rap-
idly red to indicate the process is complete. Doing this removes any settings you
may have entered and restores the T20 to its original default state. You can then
enter new settings or just press reset (R) again and run the pump.
Purging the T20 Timer
Introduction to Programming
The T20 flow switch timer includes a set of functions that can be set up to control
a pump. The functions range from a simple override on start timer that allows a
pump to start in spite of an initial lack of flow, through to a range of sophisticated
timing and flow based sequences. The functions are independently accessible
and adjustable through the T20’s simple programming interface. The pages that
follow set out what each function does and how to set it up.
The actual selection of a suitable set of functions must be decided prior to pro-
gramming and will depend on what level of control the pumping system requires.
In order to achieve the best performance from this flow switch observe the follow-
ing basic rules.
1) Use the least number of functions possible. Do not program in functions you
do not specifically require, as to do so will make the system’s operation unneces-
sarily complicated and may introduce unpredictable interactions that could cause
the T20 to behave in a manner you had not anticipated.
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