Watermaid WM40 Owner's Handbook Manual - page 10
13
Poor water flow, overheating, and heavily encrusted electrodes allow chlorine gas to etch the titanium
base and cause the precious coating to shed. Such conditions VOID WARRANTY. Obvious signs of these
conditions are a change in colour of the anode mesh and a whitening of the Cell casing.
To check Cell performance, place the Cell in a 25 litre (6.6 gal) bucket of pool water at 20°C (68°F) with
6000 ppm of salt. The dome section of EZ300 Cells should NOT be submersed. The Cell should produce a
1 ppm chlorine reading within 5 seconds. If the Cell fails this test and it has been cleaned, then a new
Cell may be needed.
(vi) NO WATER FLOW AND THE CELL
If there is no movement of water through the WATERMAID® Cell (e.g. in the case of blocked skimmers,
closed valves, draining of the pool or during backwashing) while the WATERMAID® Power Supply is
switched on, then hydrogen gas can build up, heat may generate and the Cell casing may expand, distort
and turn white, until the gas sensor switches the power off. This practice is NOT recommended, nor
covered by warranty.
When there is no water flow through the WATERMAID® Cell, the power to the Cell should be
switched OFF via the switch on the underside of the WATERMAID® Power Supply.
7. SALT LEVEL
At the beginning of the swimming season, the salt level should be checked to ensure that it is correct.
6000 ppm (0.6 %) for WATERMAID® QT300, XT300 and EZ300 Cells.
4000 ppm (0.4%) for WATERMAID® QT400 and XT400 Cells.
Each year, approximately one-third of pool water is lost, so the salt level will need to be adjusted
accordingly. Refer to section 2(i) for calculating how much salt to add.
Salt is NOT lost by the process of electrolysis, nor when water evaporates. It is lost, only in the following
ways:
1. Backwashing - after 20 backwashes approximately 1 bag of salt is lost.
2. Pool overflow (rainfall, flooding etc).
3. Splash out from bathers.
4. A leak in the pool or plumbing.
To reduce the amount of salt lost by backwashing for long periods of time, place the garden hose, turned
on full, into the skimmer box during backwashing.
A salt level of 9000 ppm is isotonic with body tissue, and in the case of accidental immersion,
water at close to this level will cause less damage to lungs and other body organs than water
without salt.
8. RUNNING TIMES
Ideally, the time clock should be set to operate the WATERMAID® chlorinator from late afternoon (when
the sun is off the pool) to continue throughout the night as necessary. As UV rays destroy chlorine, a
chlorine stabiliser is recommended during summer for outdoor pools [refer to section 1(b)].
Suggested running times for an average-sized domestic pool are shown in the chart (next page). Please
note: during summer, between 8 and 14 hours per day is recommended.
Running times will depend on pool volume, bather load, water temperature, time of year, pump
efficiency, salt level, Cell age and condition, cyanuric acid levels, pH, sunlight, water chemistry and the
effects of surrounding vegetation.
In addition to normal running hours, the WATERMAID® chlorinator, pump and filter should be
run whenever bathers are in the pool.
Copyright © Watermaid Pty Ltd
8
Copyright © Watermaid Pty Ltd
TO POOL
IMPORTANT:
*
The
Cell
must
be
installed
so
that
ALL
the
water
from
the
filter
passes
through
the
Cell
BEFORE
any
diversions
or
breakouts
to
devices such as dual outlets, spa lines, and pressure type cleaners.
*
The
Cell
must
be
installed
AFTER
any
heater
and
a
distance
of
AT
LEAST
1.5M
(4.9
ft)
away
from
the
heater,
as
per
the
configuration
below, otherwise distortion to the Cell casing may occur.
* EZ300 Cells incorporate a gas trap in their vertical design.
* Use TYPE P PRESSURE SOLVENT CEMENT (glue).
* Ensure the SENSING TANG is positioned at the HIGHEST POINT.
*
WARNING:
Improper
installatio
n
or
operating
the
WATERMAI
D
®
electrolytic
chlorinator
model
WM
40
without
water
flow
through
the
Cell
can
cause
a
build
up
of
flammable
gases
which
can
result
in
FIRE or EXPLOSION.
WATERMAID® EZ300 CELL - INSTALLATION DIAGRAM
FILTER
HEATER
PUMP
FROM POOL
2
5
%
5
0
%
7
5
%
1
0
0
%
C
H
EC
K
* W
ATE
R F
L
OW
* CE
L
L
CON
N
E
CTI
ON
C
H
EC
K
* SAL
T L
E
V
E
L
*
C
ELL
AU
TO
CE
L
L
CL
E
AN
P
RES
S
P
RES
S
PRO
VEN PERFO
RMANCE
SINCE 1971
POOL
CHLORINA
TION
WITH SAL
T
EZ300 PARTS V
IEW
ASSEMBLY:
1. Insert V
enturi V
ane into T
-Piece.
2.
Align
bottom
of
Cell
Housing
with
top
of
T-Piece
and
screw Barrel Nut tight (ensure O'Ring is in place).
3.
Insert
Cathode
into
Cell
Housing
and
position
Locating
Spacer into V
enturi V
ane.
4.
Place
Cell
Barrel
Nut
ov
er
dome
top
of
Cell
Cathode.
Position
B
rass
Sock
et
abo
ve
R
esined
Pot
and
screw
Cell
Barrel Nut tight.
5. Insert Br
ass Plug into Br
ass Sock
et.
Cell Cable to
Power Supply
Bra
ss Plug
Brass Socket
Cell
Barrel Nut
O’Ring
Cathode
(Removable)
Locating
Spacer
V
enturi
V
ane
Resined Pot
Cell Housing
&
Anode
O’Ring
T-Piece
Barrel Nut
T-Piece
SENSING
TANG
CELL