Water Quality / Rinsing Intervals; 4�6 Water Connection - Power Steamer 2 - Renfert POWER steamer 1 Original Bedienungsanleitung

4.5

Water quality / rinsing intervals

The unit is only suitable for operation with drinking water. Water that does not comply with drink-
ing water regulations is not permitted as it may contain substances that damage the unit.
The chlorine concentration must not exceed 4 mg/l.
Before startup, determine the water hardness and calculate the resulting rinsing intervals. Test
strips for determining water hardness are part of the scope of delivery.
Weekly rinsing is mandatory if a salt-based softening system is used, regardless of the water
hardness measured.
Water from a softening system results in water with a high pH value in the tank. This can corrode
the tank and may result in total failure of the unit.
When using a softening system, ensure that no regeneration water with a high concentration of
salt/brine or acid enters the unit.
The following rinsing intervals must be observed depending on the hardness of the water:
Test strips
German degrees (°dH) /
degree of General Hard-
ness (dGH)
English degrees
(Clark degrees) (°e)
French degrees
(°fH)
Parts per million
(ppm CaCO
Rinsing interval
In the case of continuous operation with drinking water, dirt collects in the pressure tank as well as cal-
cium deposits as a result of the hardness of the water� These either form as a crust on the walls of the
pressure tank or pieces of crust break off and settle at the bottom of the tank.
When a (salt-based) softening system is used, exchanging calcium and magnesium for sodium also
forms a sort of sludge in the water in combination with other suspended solids that can contaminate the
pressure tank�
Both reduce the effectiveness of the heating and are detected by a calcification indicator.
Sludge and calcium deposits that have broken off must be removed by rinsing regularly. This can prevent
or at least delay the formation of a hard calcium crust that can only be removed using chemical descaling�
With the POWER steamer 2, Renfert recommends using the POWER steamer water softener (see
accessories) to reduce water hardness.
4.6 Water connection - POWER steamer 2
Risk of brackish water flowing back into the water supply! To
protect drinking water against non-drinking water, a system
separator must be installed between the building water con-
nection and the steam cleaning unit. The operator is respon-
sible for implementing these measures.
Observe the minimum and maximum connection pressure
(see Chap. 8. Technical data).
Risk of water damage due to possible loosening of the water
hose!
After operation, or when the unit is unattended, turn off the
water supply at the water shut-off valve.
⇒ Check that the connections are fitted with gaskets.
⇒ Connect the angled connection of the water hose (18) to the water connection (16)�
⇒ Connect the straight connection of the water hose to the water supply with the water shut-off valve.
⇒ Carefully open the water shut-off valve and check the leak-tightness of the connections.
So that fill level measurement operates correctly, the water must support conductivity. This is generally
the case with tap water and drinking water�
< 3
< 3.75
< 5.4
< 53.4
)
3
8 weeks
> 4 > 7
> 5 > 8.75
> 7.2 > 126
> 71.2 > 125
6 weeks 4 weeks
16
- 9 -
> 14 > 21
> 17.5 > 26.25
> 25.2 > 37.8
> 249 > 374
2 weeks Weekly
18
Fig.
8
en