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Hayward EZ-Chem Manual

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USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Page 7 of 13 EZ-CHEM Rev. B
WARNING – Chemicals can cause internal and external burns. To avoid death, serious injury and/or damage to
equipment: Wear personal protective equipment (gloves, goggles, mask, etc.) when servicing or maintaining this device. It
must be installed in an adequately ventilated room.
Mount the box (or both boxes if the ORP option is chosen) on the wall using the mounting kit supplied. The box must be
installed in the equipment room (dry, temperate, ventilated). Caution, acid vapours and/or chlorine can cause irreversible
damage to your device. Position the treatment product tanks accordingly.
The flow switch must be installed on the return pipe directly in line with and upstream of the treatment product injection
point. Allow a 25 cm straight section before the flow switch. A hole should previously have been drilled in the pipe to allow
the flow switch to pass through. Screw the flow switch (M) into the saddle clamp (H) taking care to seal with Teflon. Then
install the clamp on the pipe. The flow switch must be installed in the direction of operation to ensure that it is tripped by
the flow from the filter pump.
The probes must be installed on the filter outlet pipe to protect them from debris. A hole should previously have been drilled
in the pipe to allow the probe to pass through. Fix the saddle clamp and install the probes in the clamp (H) with the probe (G)
provided for this purpose. For the probes to operate, they must be vertical, with the cable upward. The probes must always
remain wet. If the probes are allowed to dry, they will be permanently unusable (not covered by the warranty).
The treatment products must be injected last over the water return line, after any equipment (heater, etc.). A hole should
previously have been drilled in the pipe to allow the treatment product to pass through. Install the saddle clamp (H) and
screw the injection valve (E) into the saddle clamp using the adapter (L) provided. Seal with Teflon.
Connect the pH probe to the corresponding BNC connector.
Connect the ORP/RedoX probe to the corresponding BNC connector (if the ORP option is chosen).
Technical specications
Supply voltage 230 V 50 Hz
EZ-Chem power 12 W
EZ-Chem power + ORP kit 18 W
Safety rating IP65
Pump delivery rate 1.5 l/h
Maximum pressure 1.5 bar
Max pool volume 90 m3
pH measuring ranges 6.0 to 9.0 pH
ORP measuring ranges 0 to +1000 mV
Measuring accuracy 0.1 pH; 10 mV
… 21 …


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