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Watermaid WM40 Owner's Handbook Manual

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For technical service or advice, contact:
AUSTRALIA
Watermaid Pty Ltd
24 Tepko Rd Terrey Hills NSW 2084
Ph: +61 2 9450 0244
Watermaid Pool Chlorinators
91 Carlisle St Ethelton SA 5015
Ph: +61 8 8242 4880
CANADA (Ontario)
Watermaid of Canada Inc.
Ph: +1 877 987 6243
SOUTH AFRICA (Johannesburg)
Ph: +27 11 794 1770
USA
Palm Coast, Florida Ph:1 800 876 2027
Kailua, Hawaii Ph:+1 808 262 7258
N14470
3075239
3075239
Copyright © Watermaid Pty Ltd
IMPORTANT
PLEASE READ
INSTRUCTIONS
BEFORE USE
AUSTRIA
Ph: +43 7229 831 740
CANARY ISLANDS
Ph: +34 922 491252
ITALY
Ph: +39 333 406 3815
MARTINIQUE
Ph: +596 612 072
SPAIN
Ph: +34 636 698501
SWITZERLAND
Ph: +417 1290 0888
THAILAND
Ph: +662 938 5408
MODEL WM40A
for use on swimming pools & spas
Australian Approval SGSEA/100121
Registration No. 28114
Pest Control Products Act (PCPA)
Conforms to: AS3136, UL STD 1081
Certified to: CAN/CSA STD C22.2
NUMBER 218.1 Class 3 Enclosure
®
PROVEN PERFORMANCE
POOL CHLORINATION WITH SALT
Owner's Handbook
®
SINCE 1971
WM40

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Summary of Contents for Watermaid WM40

  • Page 1 & spas Australian Approval SGSEA/100121 Registration No. 28114 Pest Control Products Act (PCPA) N14470 Conforms to: AS3136, UL STD 1081 Certified to: CAN/CSA STD C22.2 NUMBER 218.1 Class 3 Enclosure 3075239 3075239 Copyright © Watermaid Pty Ltd WM40 ®...
  • Page 2 WATERMAID® owner that the time clock rights referred to in clause 1, WATERMAID PTY The WM40 Power Supply can be coupled to any one of the Cells below: component contained in the WATERMAID® LTD reserves the right to charge for any...

  • Page 3: Table Of Contents

    The unit MUST be installed AT LEAST 10 feet (3m) from the inside wall of the pool. Zero Chlorine..............j) Turn OFF the switch on the underside of the WATERMAID® Power Supply when there is no movement of water through the WATERMAID Cell (e.g. filter backwashing, closed valves and 10.

  • Page 4: Essentials For A Healthy Pool

    Therefore, the use of a chlorine stabiliser is strongly recommended If the WATERMAID® chlorinator is capable of registering 75 - 100%, but the pool water is cloudy, there as it lengthens the half-life of chlorine to about 140 minutes and helps maintain a chlorine residual in the pool on hot sunny days.

  • Page 5: C) Ph

    A solution with pH of 7 is neutral. A solution with pH below 7 is acidic and a solution with pH above 7 is alkaline. By electrolysis, the WATERMAID® Cell produces sodium hypochlorite (NaOCl), which in water LIGHTS DISPLAYED ) and hypochlorite (OCl - ) ions.

  • Page 6: Installation

    1000 SALT REQUIRED (Kg) = POOL VOLUME (L) x 0.006 or For example, to run a WATERMAID® WM40 chlorinator for 10 hours per day during off peak hours, SALT REQUIRED (lb) = POOL VOLUME (gal) x 0.006 x 8.3453 where the off peak rate of electricity is 8.8 cents/kWh, the electricity cost will be: = 300 (Watts) ÷...
  • Page 7 2. For a time clock Power Supply, insert the WATERMAID® plug into the electrical power outlet. 3. For a non time clock Power Supply, insert the WATERMAID® plug into an external time clock and plug 1. Lower pH below 7, generally by the addition of up to 2 litres (4 pt) of pool acid, as this is an the time clock into the electrical power outlet.
  • Page 8 Factor Alkalinity Factor (°C) (°F) (TF) as CaCO (HF) as CO (AF) ³ ³ 32.0 37.4 46.4 53.6 59.0 66.2 SENSING TANG 75.2 84.2 CELL 93.2 104.0 127.4 1000 1000 Copyright © Watermaid Pty Ltd Copyright © Watermaid Pty Ltd...
  • Page 9 (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).
  • Page 10 (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.

  • Page 11: The Watermaid® Power Supply

    QT and XT series Cells can either be submersed in the solution or the solution can be poured into the Cell after one end of the Cell is blocked. One end may be blocked by using a WATERMAID® cleaning cap and barrel nut.

  • Page 12: Auto Cell Cleaning

    Cell by unscrewing the T-Piece Barrel Nut (refer to Parts View, page 8). Do NOT attempt to The expected life of a WATERMAID® Cell is 5-8 years. As the Cell wears out, less and less chlorine will clean the mesh electrode by abrasion. Proceed to step 3.

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