Datacolor Conditioner Operation Manual / DCCOPMN_RP1 / Rev 3.0 / 7th August 07
page 20 of 51
4.2
Hose burst protection device with reflux protection device (option)
For protection of the drinking water system, acc. to DIN 1988 part 4, and against flooding caused by burst
water hoses, a safety kit with reflux protection device is available.
4.2.1 Protection
principles
Whenever a strong water flow of about 18 l/min. occurs, e.g. caused by a burst water hose, a valve
automatically cuts off the water supply, what can be heard as a clicking noise. The water supply now
remains interrupted until its manual release.
An eventual endangering of the drinking water system depends on the risk potential of the charging
material. Under unfavourable conditions (e.g. decreasing pressure inside the tap water system), drained
off charging material could be sucked out of the chamber via the steam generator into the tap water
system and therefore contaminate the drinking water. According to standard DIN 1988, part 4, the safety
kit with reflux protection device provides protection in case of short-term utilization of substances with low
risk potential. When using substances bearing a higher risk potential, install a one-way valve in order to
guarantee absolute protection. It is the user’s responsibility to prevent, according to national standards,
any reflux of contaminated water into the drinking water system.
4.2.2 Assembly
The regularly delivered original parts – hose burst protection device,
hose nozzle with screwing – are not needed. Screw the pre-mounted
assembly of hose burst protection device and reflux protection device
onto a water tap with a G¾ inch right turning thread connection. The
connection is self-sealing. Establish the connection between the safety
kit and the chamber with a part of the supplied hose. Protect both ends
of the hose by the supplied hose clamps.
We recommend connecting the hose as the last step in order to avoid
twisting it while screwing on the safety kit.
Open the water tap slowly in order to avoid actuating the hose burst
protection device.
4.2.3
Release of the reflux protection device
In case the burst protection device interrupted the water supply, find
first the reason and remove it as far as necessary. Close the water tap.
Release the valve by a half left-turn of the upper knurled part. You can
hear the release of the valve as a clicking noise. Tighten the burst
protection device against the water tap by a right turn. Open the water
tap slowly afterwards.
4.2.4
Maintenance of the assembly of hose burst protection device with reflux protection device
Calcification can impair the function of both valves. We recommend an annual inspection by a skilled
plumper. The plumper should demount the safety kit with reflux protection device to check the two valves
by hand for function and calcification or blockage.
CAUTION
Danger of calcification.
Impairment of valve function.
¾
Have a plumber inspect the two valves annually.
¾
Remove calcifications by citric acid or acetic acid solutions.
¾
Afterwards test the function and the tightness of the mounted unit.
Check: Quickly open the water tap while there is no chamber connected – the valve has to cut off the
water flux without any delay.
