Technical Specifications - Vetus EHPA12R2 Instructions D'installation

Hydraulic steering system, cylinder with (a) steering
pump(s) and EHP
Fill the system via the filling connection in the steering pump;
the EHP tank will have to be filled with oil via the compensating
line.
A steering gear with two steering pumps should be filled up at
the uppermost steering pump.
In the next step, fill and bleed the EHP and the cylinder as
described above.
Then fill and bleed the steering pumps according to the manu-
facturer's instructions.
General
Make sure to repeatedly check the oil level for the first few days
after filling; if necessary, refill the oil.
The oil level may initially decrease since finely distributed air
escapes from the oil.
Technical specifications
EHP type :
Electromotor
Type :
Voltage :
Current at no load :
Current at max. :
Hydraulic pump
Type :
Capacity :
Relief valve
Setting :
Buffer tank
Capacity :
Connections
Pump :
Buffer tank :
Fuse
In the primary circuit :
Weight
Excluding the oil :
Hydraulic medium
Hydraulic oil : in accordance with ISO VG 15
Viscosity : 22 cSt at 40˚C
Viscosity index : above 100
Solidification point : lower than -30˚C
The following hydraulic oils match the listed specifications:
Vetus : Hydraulic oil OSI VG 15
Shell : Tellus 22
Esso : Nuto H22
Texaco : Rando oil HD22
BP : HLP22
Double check valve
Type of check valve
Relation piston-check-valve
Connections
Weight, excluding the connections
12
020203.06
EHPA R2
Reversible, permanent magnet, DC motor
12 V 24 V
6,5 A 4,0 A
9,5 A 6,0 A
3
350 cm /min (21.3 cu.inch/min) 700 cm
couplings for tubing 8 mm O.D./ 10 mm O.D. are separately available
1)
20 A 15 A
: G 1/4
: Double-controlled check valves
: 4 : 1
: G 1/4 female thread
: 2,2 kg (5 lbs)
Maintenance
- The oil level should be checked regularly.
If the installation consists only of an EHP and a cylinder, the
oil level in the EHP tank must be checked.
If the installation also includes one or more steering pumps,
the oil level in the (upper) steering pump must be checked.
- Change the hydraulic oil once every two years or every 200
operating hours.
EHPB R2
12 V 24 V
7,5 A 4,8 A
12,5 A 6,9 A
Plunger pump
3
/min (42.7 cu.inch/min) 950 cm
2
50 bar (50 kgf/cm , 4905 kPa) (711 psi)
0.16 liters (0.035 Imp. gallon)
7/16 - 20 UNF female
1) 1)
25 A 15 A
2.3 kg (5 lbs)
1)
with the SAE J 1284 norm
EHPC R2
12 V
9,0 A 6,0 A
15 A 8,9 A
3
/min (57.9 cu.inch/min)
1) 1)
30 A 20 A
Based on 'Fast Acting (F)' fuse in accordance
vetus® Electro-Hydraulic Pumps
24 V
1)