Operating and Installation Instructions
herose.com
Page 12
6.5. Product-specific Installation Position and Installation Notes
The HEROSE Combi-Regulator must be installed in the system according to the
flow direction (A
B) with the major axis
– in which the two connections A and B
are located
– in a horizontal installation position without tension. During and after
installation, connection C must point vertically upward.
The set point screw for the working pressure points vertically downwards. (see
Figure 1
) This installation position applies to both the Combi-Regulator 4186-1 and
the Combi-Regulator 4186-3. The illustration is purely schematic.
The Combi-Regulator must be installed in the system so that it is easily
accessible, e.g. for maintenance and changes to the nominal working pressure.
The system planner must design the plant system for at least the working pressure
plus the response pressure of the safety function.
7. Operation and Maintenance
7.1. Commissioning
Prior to commissioning, the details of the material, pressure, temperature and
installation position must be checked against the plan of the piping system.
The BetrSichV [
German Health and Safety Regulations
] and its TRBS
[
Technical Rules for Operating Safety
] must be observed,
Residues in the piping and valve (dirt, welding beads, etc.) will inevitably
result in leaks.
The following must be ensured before each commissioning of a new system or the
recommissioning of a system after repairs or conversion work:
Correct completion of all installation and assembly work,
Commissioning must only be carried out be "Qualified personnel" (see
Section 3.4)
The correct functional position of the valve must be ensured and
Existing guards must be installed or repaired.
7.2. Adjusting the Nominal Working Pressure
On delivery, the Combi-Regulator is set to a pre-defined working pressure.
Depending on the delivered working pressure range, the Combi-Regulator is set
accordingly. At the request of the customer, the Combi-Regulator can be pre-set to
a specific working pressure.
Working pressure range
Combi-Regulator
4186-1
Combi-Regulator
4186-3
1-12bar
6-24bar
16-38bar 2-10bar
8-22bar
20-38bar
Pre-set nominal working
pressure
8bar
12bar
20bar
8bar
12bar
20bar
Nominal working
pressure change per
rotation
1.3bar
2bar
3bar
0.8bar
1.7bar
2.7bar
Table 1: Nominal working pressure
