GL0052-03
– Envireau Mono-Tech Rainwater – Installation & Operation Guidelines
Page 20
f)
Now remove the filter from the in-line filter carrier on the pump incoming pipe and VERY SLOWLY open
the incoming stop-cock below the filter carrier. You will hear air rushing up the pipe from the pump. Be ready
to turn off the stop-cock to avoid spillage from the filter carrier. Turn off the stop-cock when water wells up
inside the filter carrier. Replace the filter and screw the parts together firmly.
NOW OPEN THE STOP-COCK
FULLY. Check for leaks.
g)
Observe the display unit. The STATUS light may be illuminated. Ignore this indication during setting up.
You must now set the PRESSURE switch point using VR8.
h)
To set VR8, the pressurised indicator must first of all be extinguished. To do this you will now set the
PUMP SWITCH-OFF pressure to a higher pressure than the pump can achieve. The pressurised indicator is
the GREEN light nearest to VR8. TURN VR8 ANTI-CLOCKWISE UNTIL THE PRESSURISED INDICATOR
EXTINGUISHES. If it is already unlit at initial observation then proceed to (i) below.
i)
With the pressurised indicator extinguished and water in the external tank, the pump should be running.
Check that this is the case by operating the ball-cock in the header tank or by operating any other appliances
on the same feed (e.g. external taps). Allow the header tank to FILL and the DEMAND to cease.
j)
NOW, turn VR8 clockwise until the pressurised indicator illuminates. You may turn VR8 up to 3 turns past
this point to ensure pump switch-off on pressurisation but if you turn the control too far the pump may fail to
turn on when the system de-pressurises due to demand. A reasonable overturn would be 1-2 turns clockwise
from the pressurised indication point.
k
) You have now completed set-up and commissioning. Test all appliances and check to ensure that the
STATUS indicator light, which may have illuminated during set-up, has now extinguished again. If the
STATUS indicator light fails to extinguish within five minutes, switch off the system and go to the
“Troubleshooting” section.
SAFETY CHECK.
Now that the system is commissioned you should check that the pump becomes disabled
when the water level in the storage tank falls to a very low (EMPTY) level. To do this you should lift the
sensor until it is approximately 7” (18mm) below the water surface. The pump should no longer operate on
demand at this level, and the opening of ENVIREAU ball-cock in the header tank will not cause the pump to
start. If the pump still operates at this level, you may adjust VR5 slowly anti-clockwise until the pump turns
off.
