BWT PERMAQ COMPACT 51, Installation And Operating Manual

Page: 6 / 36

UK
6
6. ELECTRICAL CON-
NECTIONS
Note! The electrical connections
must be made in compliance with
local regulations.
The electrical connection to the
BWT PERMAQ
®
Compact 51 plant
must be as follows:
*Voltage:
230 Volt-50 Hz
*Fuse: 10 Amp
*Max. power consumption:
1.5 kW
Colour code of power cable:
Blue wire:
N
Brown wire: L
Yellow/green wire: PE
If for some reason you need to
change the factory-mounted power
cable, please cf. Annex – 13.3
Wiring Diagrams.
All internal connections in the plant
like e.g. pump control and level
control are pre-assembled in our
factory. This means that only the
supplied power cable which is
connected to the control box (C-
Figure 3) must be connected to a
power plug or hard wired.
7. START-UP OF THE
PLANT
Read section below carefully be-
fore starting up the plant

Check prior to start-up that all
water and electrical connections
are made as described in pre-
vious sections and in compli-
ance with local regulations.

Open the raw-water supply.

Check that all water connec-
tions are tight.

Pull the permeate hose (A-
Figure 3) out of the reservoir
tank and lead it away from the
tank to a drain.

Open the outlet valve (B-Figure
3) complete and close the recir-
culation valve (D-Figure 3).

Now switch on the 230 Volt 50
Hz power supply. Also switch
on the main switch located on
the control box (C-Figure 3).

The plant is now operating.

Now the plant shall operate
and flush to outlet for 20-30
minutes before adjusting the
outlet valve once more.

When the flushing is finished,
adjust the outlet valve (B-Figure
3) and recirculation valve
again.
REMEMBER! Under all given condi-
tions, the following must be com-
plied with:

Permeate amount: Max plant
capacity (l/h), 10-25 °C

Operating pressure: 13.5-14.5
bar

Maximum pressure: 15 bar
Permeate amount and max. pres-
sure may never exceed above-
mentioned as it would cause dam-
age to the plant membrane.
7.1 Adjustment of out-
let amount
Important! Read the entire section
7.1 and 7.2 before adjustment is
commenced.
Outlet amount must be adjusted,
and the suitable outlet amount on
your plant depends on the raw-
water quality. A too high water re-
covery will damage the plant
membranes. On condition that the
raw water complies with the quali-
ty requirements, the plant can op-
erate with a recovery rate of 40 %.
With softened feed water, you may
obtain a recovery of 70-80 % de-
pendent on the amount of organic
material in the water.
Finally, the plant recovery affects
the conductivity of the permeate.
That means that if a retention
greater than 98 % is requested, the
plant recovery can be adjusted at
a lower level. Please note that the
plant retention rate of 98 % applies
by 75% recovery. Contact BWT or
the supplier of your plant to decide
which outlet amount is suitable for
your water.
An easy way of checking the outlet
amount of the plant is:
Ex.: BWT PERMAQ
® Compact 51
with 40 % recovery
h l
x
nt Outletamou 240 160
40
160 100
  
When the requested amount of
outlet water has been obtained,
tighten the lock nuts on the outlet
valve (B-Figure 3) so that it is
locked. It is important to check the
outlet amount after the lock nuts
have been tightened to make sure
that the valve has not moved. Both
lock nuts must be tightened.
Important! The outlet valve must be
locked on the prescribed outlet
amounts. If the needle valve is
closed so that the outlet amount is
reduced, then the plant membranes
will become damaged.
7.2 Adjustment of re-
circulation amount
Then the recirculation amount (D-
Figure 3) must be adjusted by
loosening lock nut on the recircula-
tion valve. Adjust the permeate
amount at maximum 160 l/h for
BWT PERMAQ
® Compact 51 at a
temp. of 10-25 °C.
If the temp. is below 10 °C, the
capacity will be 3 % below normal
capacity for every degree under
10 °C.
If e.g. the raw-water temp. is 8 °C,
for an BWT PERMAQ
® Compact
Ty
p
e
o
f p
la
n
t
P
e
rm
e
a
te
c
a
p
a
cit
y
(
l/
h
)
Outlet
amount (l/h)
G
ro
u
n
d
w
a
te
r
(40
%
rec
o
v
er
y
)
S
u
rf
a
ce
w
a
te
r
(50
%
r
ec
o
v
er
y
)
S
o
ft
e
n
e
d
w
a
te
r
(75
%
r
ec
o
v
er
y
)
51 160 240 160 53
) h l ( capacity permeate
(%) cov
) ( 100
) ( O


ery re
h l pacity permeateca x
h l t utletamoun