14
The only way to determine the needs of the pool when varying the operating times between seasons is
to monitor the pool daily and make adjustments accordingly. The overall aim of sufficient running times,
operation during bather hours and superchlorination is to produce a chlorine reading of 1 - 3 ppm. The
finest detail must be discernible at the bottom of the deep end of the pool.
Public Pools
may require multiple chlorinators, pumps and filters, as well as 24-hour operation of the
pool equipment. A "rule of thumb" is 1 Kg (2.2 lb) of 100% available chlorine per 20 bather hours (2
people/10 hrs etc).
Running times for
spas
is dependent on the bather load of the spa. Initial daily testing will help to
determine the required running times. The overall aim of sufficient running times and operation during
bather hours is to produce a chlorine reading of 3 - 5 ppm.
9. ZERO CHLORINE
If the recommended residual chlorine level cannot be obtained, check the following:
(a) If an algaecide has been added in the last 4 weeks. Most algacides contain ammonium compounds
(approximately 20%), which will react with chlorine to leave a zero chlorine reading in the water. As a
guide, about NINE
times the amount of ammonium compound IN CHLORINE will need to be produced or
added before there is a free chlorine level in the water. Any debris in the water will need ADDITIONAL
chlorination.
(b) If the filter is functioning properly. Take a sample of pool water in a clear glass and hold it up to the
light. Floating debris will indicate that unfiltered water is getting back into the pool. If the filter is not
functioning properly, there will not be enough chlorine in the water to cope with the debris.
It is important to note that the sand in a sand filter should be changed roughly every 5 years as the
edges become rounded over time due to the constant abrasion during filtering and will not work as
effectively.
(c) The bather load. With sufficient running times, the WATERMAID® chlorinator should be able to
maintain a clean clear pool for about a
20 bather/hour ratio
(e.g. 4 people/5 hrs, 10 people/2 hours
etc). It is important to note that contamination from sunscreen, urine and pets will dramatically destroy
the chlorine.
(d) Incorrect pH. Chlorine is not as effective outside the correct pH range. Refer to chart, section 1(c).
14
12
10
8
6
4
2
Winter Spring Summer Autumn
Ho
urs
SUGGESTED RUNNING TIMES
(average-sized domestic pool)
PLEASE NOTE:
If a
solar heater
is installed and
running
times
are
set
for
chlorination and filtration in the
daytime, then extra chlorination in
non-sunlight
hours
may
be
required.
On a monthly basis in summer the
WATERMAID® chlorinator, filter
and pump should be run non-stop
for at least 24 hours to
super
chlorinate
and maintain a high
polish in the pool.
Copyright © Watermaid Pty Ltd
7
Copyright © Watermaid Pty Ltd
WATERMAID® QT & XT SERIES CELLS - HORIZONTAL INSTALLATION DIAGRAM
IMPORTANT:
* F
or QT and XT Cells, a GA
S TRAP must be installed to prev
ent the accumulation of h
ydrogen gas
in the filter if the pump ev
er fails.
*
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.
* Use TYPE P PRESSURE SOLVENT CEMENT (glue).
* Ensure SENSING GANG is positioned at the HIGHEST POINT.
*
WARNING:
Improper
installation
or
operating
the
WATERMAID®
electrolytic
chlorinator
model
WM40
without
water
flow
through
the
Cell
can
cause
a
build
up
of
flammable
gases,
which
can
result
in
FIRE
of
EXPLOSION.
FILTER
HEATER
PUMP
TO POOL
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
GAS TRAP
CELL
SENSING TANG
