13
1.12a Four stages of controller operation:
1.
Pump start:
The pump controller
measures the volume of water released
into the shower tray. The installer sets this
volume so that there is water in the gulley
before the pump starts thus preventing
any start up sucking noise.
2.
Pumping flow rate:
With the shower
running at a mid flow (8 ltrs/min) setting
the installer adjusts pump speed to match
the flow of water into the tray. This is done
by watching the level of water at the gulley
and adjusting the speed up or down as
required until the water is being pumped
away slightly faster than the flow from the
shower.
3.
The pump speed-narrow setting is used to
set the pump speed at 2 ltr/min
increments above 8 ltrs/min up to the
maximum flow from the shower. This is
necessary as flow characteristics from the
pump change at higher rates.
4.
Pump shut down:
After the pump speed
is set the shower is turned off. When the
water is drained from the tray a gurgling
noise is heard. The electric current loading
on the pump is then stored for subsequent
use in automatically turning off the pump.
How to adjust Settings:
a.
Pressing the Mode button will
switch between the various mode
settings, indicated by small LEDs.
b.
The Up and Down arrows are used
to adjust the value.
c.
Press down the Mode button firmly
until the LED flashes which
indicates that the selected value
has been stored.
1.12b
Switch power on to the control unit - the
LEDs will blink alternately. A simple setup
is all that is required for trouble-free
efficient performance of the Dry-Deck 20
system.
See flow chart on page 15
1.13
1.
Inlet pipe size:
Programme in the size of
pipe work from the gulley to the pump.
Select 22 mm. Ignore the 15 mm setting
as this is not used for this application. With
‘22’ illuminated on LEDs hold the Mode
button down firmly until the LED blinks.
Note: This will also reset all the factory default
settings including the pump speed.
2.
Pump start up:
Start delay (ltrs)
This selects the initial amount of water in
the tray before pumping starts. This should
come above the level of the gulley.
(Factory default is the minimum setting of
0.4 ltrs). Pressing the up arrow will
increase the amount of water from 0.4 ltrs
to 5 ltrs passing through the shower head
before the pump starts.
Make adjustment to this setting during final
commissioning.
Principles of Operation
Setup
1.15
