6.3 Leak test
CAUTION: The control device must not be
included in a strength test (design review) of the
entire installation.
•
Close all shut-off valves of the connected devices.
•
apply test pressure according to TRF 2012
•
wait for temperature adjustment
•
test duration 10 minutes (the pressure must not
drop)
•
spray all connections with foaming agents (e.g. leak
detection spray) and check for leaks.
NOTE!
We recommend the leak test with our testing device
(Art. No.: 1 00 098 14 018 2).
DANGER!
•
Before each commissioning of a new installation or
recommissioning of an installation after repairs or
modifications, the following must be ensured:
•
proper completion of all installation/assembly work!
•
commissioning only by "Qualified personnel "(see
point 2.3).
•
passed leak test
7. Operation
7.1 Initial commissioning
After completion of the leak test the pressure regulator is
ready for operation.
7.2 Decommissioning
If the supply and consumption system is to be taken out of
operation, all shut-off valves must be closed and the pipe
system drained. All open connections must be secured with a
suitable seal.
7.3 Recommissioning
When recommissioning the regulator, make sure that all the
relevant steps are repeated as described in section 6.1 to
section 6.3.
If recommissioning is not possible, the manufacturer must be
informed.
7.4 Maintenance
If the points in section 6 are observed, the pressure regulator
is maintenance free.
8. Cause and remedy of operating faults
8.1 Fault detection
DANGER!
When troubleshooting, the hazard warnings
under 2 must be observed.
•
If the faults cannot be rectified using the following
table "Troubleshooting (8.2)", the manufacturer must
be consulted.
•
In case of malfunctions of the function or the
performance, it must be checked whether the
installation work has been carried out and completed
according to these operating instructions.
•
The information on pressure, temperature, and
direction of flow as well as the operating conditions
must correspond to the data sheet or the technical
data on the type plate.
8.2 Troubleshooting
Fault
Measures
Gas smell
Caution: Fire and
explosion hazard!
Keep calm, close the gas supply, open
windows and doors, do not operate
any electrical switches, contact a
specialist.
No gas flow
Open shut-off valves, check level
indicator if necessary,
OPSO is closed (see
Recommissioning OPSO), check the
filter in the inlet connection as well
as the vent openings and clean if
necessary or contact the
manufacturer.
Consumption
appliance on fault
After depressurising the system,
connect the "Müller test unit" to the
appropriate test connections on the
regulator and take measurements:
•
inlet pressure (upstream
pressure before the
controller stage)
•
outlet pressure (idle
pressure, consuming device
not in operation
•
outlet pressure (flow
pressure, consumer unit in
operation)
•
connection pressure at the
consumer unit
Then compare the values with the
technical data of the regulator and
the consumer unit.
NOTE!
Before carrying out assembly and repair work,
please observe Section 10
9. Repairs
In order to ensure the proper functioning of the installation
under normal operating conditions, it is recommended to
replace the device before 10 years have elapsed since the
date of manufacture.
The 10 years is a recommendation that can be replaced by
national laws or technical regulators, taking into account the
operating conditions of integrated safety devices and
maintenance schedules.
According to DGUV 79:
The Contractor must ensure that parts of consumable
equipment that are subject to wear and aging are replaced
after a maximum of 8 years. This does not apply if the proper
condition has been confirmed by an expert.
10. Warranty
The scope and period of warranty is defined in the version of
the "General Terms and Conditions" of Müller Gastechnik
GmbH valid at the time of delivery.
All information and notes in this manual have been compiled
taking into account the applicable standards and regulations,
the state of the art and our many years of expertise and
experience. The manufacturer accepts no liability for
damages due to:
•
Non-compliance with the instructions
•
Unintended use
•
Use of untrained personnel
•
Unauthorised conversion
•
Technical changes
•
Use of non-approved spare parts. The actual scope
of delivery may differ from the explanations and
illustrations described here in the case of special
versions, the use of additional ordering options or
due to the latest technical changes.
