7
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Service and maintenance
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ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
7
Service and maintenance
7.1
General overview of service and maintenance
Regular inspection and maintenance of the ROTEX HeatPumpSolarUnitand its components reduces energy consumption and
ensures a long life and smooth operation.
Legal requirements
According to the F-gases directive (EC) No. 842/2006 item 3, operators (or owners) must regularly service their stationary cooling
systems on a regular basis, check for leaks and remedy any leaks found as quickly as possible.
All maintenance and repair work in the cooling circuit must be documented in the Installation and maintenance instructions. This
obligation results from the directive published on June 14
th
2006 in the EU official gazette concerning greenhouse gases.
Operators of ROTEX heat pump systems are subject to the following obligations:
•
With a total
filling quantity
of the system with refrigerant of
3 kg – 30 kg
or from
6 kg
upwards in hermetic systems:
Checks
by certified personnel at intervals no longer than
12 months
.
•
With a
total filling quantity
of the system with refrigerant of
30 kg – 300 kg:
Checks
by certified personnel at intervals no longer than
6 months
(with an existing leakage recognition system at
intervals no longer than
12 months
).
•
With a
total filling quantity
of the system with refrigerant of
> 300 kg:
Checks
by certified personnel at intervals no longer than
6 months
. A leakage recognition system is obligatory with
this filling quantity.
•
An obligation to document (maintenance and leakage testing) in Installation and maintenance instructions stating type and
quantity of refrigerant used or recovered as well as the test method used (according to EC No. 1516/2007). This documen-
tation must be retained by the operator for at least 5 years after compilation and submitted to the responsible authorities
on demand.
•
Responsibility of the operator of systems for recovering F-gases by certified personnel.
Tests carried out during the annual service:
– General condition of the ROTEX HeatPumpSolarUnit and its components, visual inspection of connections and pipes.
– Visual inspection of mechanical, hydraulic and electrical components for wear and for loose parts.
– Visual inspection of covers, cladding and fastening elements for wear and for loose parts.
– Functional testing of all contactors.
– Leakage checks on lines and components of the refrigerant system.
– Check on the system water pressure on the Indoor Module (RKHB).
– Check on the water pressure of the cold water supply to the hot water storage tank.
– Condensation water drain on the Outdoor Module and on the hot water storage tank.
– Drainage hose for the safety pressure relief valve in the Indoor Module (RKHB).
– Functional testing of the ROTEX HeatPumpSolarUnit and its components.
– Stipulated tests on optional components as specified by the relevant installation and operating instructions.
Have the inspection and maintenance carried out by authorised and trained HVAC engineers once a year, ideally
before the heating period
. This will avoid malfunctions during the heating period.
ROTEX recommends a service and maintenance contract to ensure regular service and maintenance.
If the total filling quantity of the system with refrigerant is less than 3 kg, there is no European legal requirement
for testing intervals. However, ROTEX recommends concluding a servicing agreement and keeping the
documentation of work carried out in the Installation and maintenance instructions to maintain claims under
guarantee.
Certified people are those who have proof of expertise for the European Community for work on stationary refrig-
eration systems (heat pumps) and air conditioning systems, according to the F-Gases Directive (EC) No.
842/2006.
– Up to 3 kg total quantity of refrigerant: Stationary equipment qualification Category 2
– from 3 kg total quantity of refrigerant upwards: Stationary equipment qualification Category 1
