19
Hot tub care
Chlorine shock – in case of extreme pollution, it is necessary to treat the water with
a dose of fast dissolving chlorine and thus perform a chlorine shock. The pH level of
the hot tub water has to be adjusted to 7.0 –7.6 first and the chlorine level has to be
checked. Once a week or after adding a large amount of fresh water to the hot tub,
add a shock dose of chlorine 10 –20 g/m
3
(2 table spoons) into the water. Add the
chlorine only when there are no people in the hot tub. After you add the chlorine,
turn on the circulation pumps so that the chemicals mix well with the water. If you are
using a granulated form of the chemical, dissolve it in a small amount of water first.
Let the chlorine level drop to 3 mg/l before you start using the hot tub.
Oxygen shock – in case of extreme pollution, it is necessary to treat the water with a
large dose of fast dissolving oxygen and thus perform an oxygen shock. The pH level
of the hot tub water has to be adjusted to 7.0–7.6 first and the oxygen concentration
in the water has to be checked. Once a week or after adding a large amount of fresh
water to the hot tub, add a shock dose of oxygen (2 tablets) into the water. Add the
oxygen only when there are no people in the hot tub. After you add the oxygen,
turn on the circulation pumps so that the chemicals mix well with the water. Let the
oxygen level drop to 15 mg/l before you start using the hot tub.
Store the chemicals according to the instructions on the label.
Ideal chemical levels
Free chlorine concentration
(active oxygen concentration)
0.7–1.0 mg/l
(10–15 mg/l)
pH level
7.0–7.6
Calcium
100–180 mg/l
Overall alkalinity
80–120 mg/l
7.4
Replacing the water
It is important to keep the hot tub water fresh and clean. We recommend you to
replace the water at least every 3 months unless the water quality drops sooner. The
hot tub water can be used for watering the garden for example, given that it has not
been chemically treated at least one week prior.
a) Disconnect the hot tub from the power supply (turn off the residual current device).
b) Check the power supply cable and make sure it is not wet.
Summary of Contents for TP 500
Page 1: ...USER MANUAL TP 500 ...
Page 23: ...23 11 Notes Notes ...
