16
HIU2-IM-DE-W-DE-08-2018-Rev1_DE-enUS | Art. No. 10078860
EN
ENGLISH
7 Maintenance
Electricity!
Only perform maintenance work on the
HIU 2 if the voltage supply has been
disconnected.
Hot water!
Severe scalding possible.
Do not reach into the hot water when
emptying the HIU 2.
Ensure that the HIU 2 has cooled down
before carrying out maintenance, clean-
ing and repair work.
Hot surfaces!
Serious burns possible.
Do not touch the tubings/pipings or com-
ponents during operation.
Ensure that the HIU 2 has cooled down
before carrying out maintenance, clean-
ing and repair work.
Wear heat-resistant safety gloves if it
is necessary to carry out work on hot
components.
The maintenance of the HIU 2 must only be
carried out by trained personnel who have
been authorized by the manufacturer.
7.1 Annual maintenance intervals
1. General visual inspection
• Check the station for leaks, annual maintenance intervals,
if necessary
1. General visual inspections
• Check the station for leaks and retighten sealing connec-
tions or replace seals, as required.
2. Functional checks
• Check that settings and operating and performance
parameters are set correctly.
• Check flow noise during operation.
• Ask users if there are any noticeable problems.
3. Ball valves
• Check that stop valves and ball valves can move freely.
4. Dirt trap
• Check and clean the dirt trap.
5. Plate heat exchanger
• Check the plate heat exchanger for limescale deposits and
clean if necessary.
6. Actions following maintenance work
• Check that all screw fittings that were unscrewed have
been retightened and retighten if necessary.
• Remove all tools, materials and other equipment used from
the working area.
• Restore the power supply.
• Slowly pressurize the HIU 2 and vent it.
• Readjust the system settings if required.
7.2 Replacement of wear parts
Please note that the HIU 2 contains parts that, for technical
reasons, are subject to wear depending on the intensity of
use, even if the specified care and maintenance have been
observed.
This especially applies to mechanical parts and parts that
come into contact with water and steam, such as hoses,
seals, valves, etc.
By their nature, defects caused by wear do not constitute a
fault and are therefore not covered by the warranty or any
guarantee. Nevertheless, these defects and malfunctions
must be remedied only by trained specialist personnel.
Contact your specialist dealer for this.
