BWT PERMAQ PRO 2000, Installation And Operating Manual

Page: 7 / 36

UK
7
condition that the raw water
complies with the water quality
requirements, it can operate at
a recovery rate of 70-80% with
softening depending on the
amount of organic material in
the water.
An easy way to check the outlet
amount from the RO-plant, is:
) (
(%) cov Re
) / ( 100
) (
h l pacity Permeateca
ery
h l capacity Permeate x
h l amount Outlet


Ex.: BWT PERMAQ
® Pro 2020
with 80 % recovery:
) ( 300 1200
80
1200 100
h l
x
nt Outletamou
  
When the desired amount of
outlet water has been obtained,
tighten the counter nuts on the
outlet valve so that it is locked. It
is important that the outlet
amount is checked after counter
nuts have been tightened to
make sure that the valve has not
moved. Both counter nuts must
be locked/tightened.
Important! The needle valve
must be locked on the pre-
scribed outlet amounts. If the
needle valve is closed so that the
outlet amount becomes reduced,
it will damage the plant mem-
branes.
7.2 Adjustment of recircula-
tion amount
Adjust the recirculation amount
by loosening the counter nuts on
the recirculation valve. Adjust
the amount of permeate so it
corresponds to the values in the
table, at a temperature between
10-25 °C.
If the temperature is below 10
°C, the capacity must be 3%
lower than normal capacity for
each degree below 10 °C.
E.g. if the feed water tempera-
ture is 8 °C, for an BWT
PERMAQ
®
Pro 2030 it means
that the permeate capacity will
be 6 % below the normal 1700
l/h, i.e. 1598 l/h.
When the requested pressure
and permeate capacities have
been obtained, check again if
the outlet amount has been
adjusted correctly. (It is recom-
mended to loosen both counter
nuts while fine-adjusting the
valves).
When both valves have been
adjusted, lock both valves with
the counter nuts. Take care not
to move the valves when tighten-
ing the counter nuts.
Important! Both counter nuts
must be locked/tightened on the
valves.
NB! After the valves have been
locked, the plant must be started
and stopped 2 times, and then
the flow shall be checked again
– the valves can then be read-
justed if necessary.
Check on the high-pressure
manometer that it shows the
correct operating pressure.
Please note that the operating
pressure may vary by different
temperatures and capacities.
B
W
T P
ER
M
A
Q
®
P
ro
P
e
rm
e
a
te
c
a
p
a
cit
y
(
l/
h
)
Outlet amount (l/h)
(with softened water)
S
u
rfac
e w
ate
r
(70% re
cove
ry
)
S
u
rfac
e w
ate
r
(75% re
cove
ry
)
G
rou
n
dw
ate
r
(80% re
cove
ry
)
2010 600 257 200 150
2020 1200 514 400 300
2030 1700 729 567 425
2040 2300 986 767 575
2060 2800 1200 933 700
2080 3300 1414 1100 825
BWT PERMAQ
®
Pro 2010 2020 2030 2040 2060 2080
Pressure after HP-pump (bar) 19 19 19,5 18 17 15
Flow after HP-pump (l/h) 1750 2425 3250 4250 5500 6125
Flow permeate (l/h) 600 1200 1700 2300 2800 3300
Flow concentrate (l/h) 150 300 425 575 700 825
Flow recirculation (l/h) 1000 925 1125 1375 2000 2000