Auto Cell Cleaning; The Timeclock; Warranty - Watermaid WM10LED Owner's Handbook Manual

5. AUTO CELL CLEANING

Unique Auto Cell Cleaning circuitry is contained within the WATERMAID Power Supply (patent
pending) and is programmed to:
1. Start producing chlorine for about 5 minutes once water is flowing through the Cell.
2. Begin its Auto Cell Clean phase for approximately 10 minutes, indicated by a blue light.
3. Revert back to chlorine production mode. The red light may light up for a few seconds while
the unit checks the water flow and Cell connection.
4. Resume normal chlorine production until it cycles to Auto Cell Clean again.
As each pool and spa environment is different, the amount of build-up that is generated will differ
from one environment to another. For example, pools or spas using sea water will experience
higher levels of calcium in the water and so more build-up.
For best results, it is recommended that the WATERMAID chlorinator be used in
conjunction with a 1HP (or greater) pump AND the addition of up to 25Kg/Year of
Magnesium [Magnesium Sulphate ("Epsom Salts") or Magnesium Chloride] to the
water.
It is important for the pool or spa owner to maintain water balance (refer to section 11).
If there is an excessive amount of calcium (i.e. levels above 200 ppm), it may be necessary to
clean the Cell manually [refer to section 7(iii)].
The use of chemicals containing calcium are NOT recommended for use with
WATERMAID WM10 units. These include:
X Calcium chloride or "calcium hardness"
X Calcium hypochlorite or "powdered chlorine"

6. THE TIMECLOCK

It is recommended that a timeclock be used to
control the pump, filter and WATERMAID
chlorinator, and this may be internal or external
to the WATERMAID. Internal timeclocks may
vary depending on availability.
HOW TO SET THE ANALOGUE TIMECLOCK
ON THE WATERMAID
The first step is to turn OFF the power to both
the WATERMAID Power Supply and pump. This
is so both devices do not start and stop
erratically whilst the timeclock is
adjusted.
THE 3 SETTINGS ON THE SWITCH:
"I" setting - chlorinator will be
permanently.
"clock" setting (in the middle) - the chlorinator will operate according to the timeclock's
programmed settings.
"O" setting - the timeclock is on standby.
1) The current time can be set by turning the clock face so that the arrowhead is aligned with the
time on the clockface.
2) The times for the chlorinator and pump to switch on and off (refer to section 9 "Running
Times") can be set by aligning the pins as follows:
being
*One revolution equals a 24-hour cycle.
*The time is in 24 hour time (e.g. 18=6pm).
ON
*Each pin equates to a 15 minute interval.
10
For On settings, slide the pins away from the centre of the timeclock.
For Off settings, slide the pins towards the centre of the timeclock.
3) Position the small white switch to the clock setting.
N.B. If the timeclock on the WATERMAID is different to the one pictured and has just
two settings, only the "I" and "clock" settings will be applicable.
When replacing the Cell, only use replacement Cells which have a label that clearly states that it
is a replacement Cell for the chlorine generating device WATERMAID electrolytic chlorinator
model WM10LED, Registration 28114, Pest Control Products Act.
(i) CHLORINE PRODUCTION
The WATERMAID QT300 and EZ300 Cells are capable of chlorinating pools up to 150,000 litres
(approx. 40,000 gal). The WATERMAID chlorinator should produce a chlorine level in a pool
between 1 and 3 ppm, and in a spa between 3 and 5 ppm. Chlorine production can be tested
by taking a sample of water directly from the outlet flow. This reading should be greater than
elsewhere in the pool by approximately 0.5 ppm.
If the WATERMAID shows no green lights, then one or more of the following may be the cause:
* the calcium level may be excessive (i.e. above 200ppm) in which case the Cell will need to be
cleaned manually [refer to section 7(iii)] and the calcium level remedied.
* the Cell may need replacing.
(ii) SCALE FORMATION
If the pool or spa surface is fibreglass, fibreglassed concrete, painted concrete, vinyl-lined, epoxy
coated or some similar inert surface, then scale can originate only from the water supply or
chemicals which have been added to the water and is therefore usually insignificant. If the pool
or spa surface is marblesheen, pebbled, quartzon or tiled, then scale can originate from
either the pool/spa water, chemicals added to the water or minerals that leach out of
the walls.
Scale is usually calcium carbonate, but can also include traces of silicon, magnesium, copper,
Arrowhead
iron, fats, oils and lotions. As a guide, the calcium level of sea water is about 1700 ppm, some
bore waters 400 ppm and city water supplies can range from 60 ppm to 200 ppm. It is best to
keep the calcium level in the water not more than 120 ppm. A calcium level above 200
"I" Setting
ppm is considered excessive.
The addition of chemicals containing calcium is not recommended with WATERMAID WM10
"Clock"
chlorinators. Please note: Powdered chlorine contains approximately 40% calcium. Adding pool
Setting
acid to a marblesheen, pebbled, quartzon or tiled pool will cause calcium salts to be released
from the pool or spa surface.
"O" Setting
Watermaid recommends the addition of up to 25Kg per year of Magnesium (Chloride or
Sulphate) to the water.
If scale is allowed to engulf the centre cathode and outer mesh electrode, any or all of
the following may result:
* Restricted water flow
* Interference to the electrical current
* Nil chlorine production
* Cell damage which may be beyond repair, voiding warranty.
(iii) MANUALLY CLEANING THE CELL
1. Turn OFF the power to the chlorinator and pump. There is no need to disconnect the Cell from
the Power Supply when cleaning.
2a) For QT SERIES Cells, unscrew the white barrel union at the top anticlockwise and the
7. THE CELL
11