22
Aermec cod. INRLLSIY 13_01. 4086991_00
NRL 800 - 1800
GB
10. HYDRAULIC CIRCUIT
10.1.
INTERNAL AND EXTERNAL HYDRAULIC CIRCUIT "00" (STANDARD)
ATTENTION
The choice and the installation
of components external to
the NRL up to the installer,
who must operate according
to the rules of good technical
design and in compliance with
the regulations in force in the
country of destination.
ATTENTION
The hydraulic pipes connecting
to the machine must be pro-
perly sized to the actual flow of
water required by the system
in operation. The water flow to
the exchanger must always be
constant.
ATTENTION
Carefully wash the plant, be-
fore connecting the unit. This
allows cleaning to remove any
residue such as weld spatter,
slag, rust or other impurities
from the pipes. These substan-
ces may otherwise accumulate
in and cause a machine mal-
function. The connecting pipes
should be supported so as not
to weigh, with their weight on
the unit.
THE DRAWINGS ARE ONLY
EXAMPLES OF THE HYDRAULIC
CIRCUIT.
STANDARD COMPONENT
1
Exchanger plate (SYSTEM SIDE)
2
Water filter (supplied)
3
Flow switch (supplied)
4
Water temperature probes (IN/OUT)
RECOMMENDED COMPONENTS NOT SUPPLIED
(CHARGED TO THE INSTALLER)
6
Air Vent
7
Anti-vibration couplings
8
Pump
9
Storage tank
10
Expansion tank
11
Safety valve
12
Ball stop Tank
13
Charging unit
14
Ball Stop
15
Manometer
1
2
3
4
4
6
7
8
14
14
7
6
15
9
10
13
12
11
VERSIONE “00”
FORNITO DI SERIE:
1. scambiatore
2. filtro acqua
3. flussostato
4. sonde temperatura acqua (IN-OUT)
5. rubinetto di scarico
6. valvola di sfiato
NON FORNITO / CONSIGLIATO:
6. valvola di sfiato
7. giunti antivibranti
8. pompa
9. accumulo
10. vaso d’espansione
11. valvola di sicurezza (bar..?)
12. scarico accumulo
13. gruppo di caricamento
14. valvola d’intercettazione
15. manometro
HYDRAULIC COMPONENTS
NRL
EXTERNAL UNIT HYDRAULIC
RECOMMENDED COMPONENT
PH
6-8
Electric
conductivity
less than 200 mV/cm
(77°F / 25°C)
Chloride ions
less than 50 ppm
Sulphuric acid ions
less than 50 ppm
Total iron
less than 0.3 ppm
Alkalinity M
less than 50 ppm
Total hardness
less than 50 ppm
Sulphur ions
none
ammonia ions
none
Silicone ions
less than 30 ppm
