Iberspa 41993E Manual De Instrucciones página 27

Make a by-pass in the filtering return circuit to the drain, to enable you to empty this circuit in
the event of a breakdown of the heater. It will also be used to empty the spa.
Assemble the pressure gauge. It is not necessary to use teflon tape, as a joint seals this point.
Do not use a tool to tighten the T-part of the pressure gauge, simply tighten it with your hands.
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