Maintenance; Technical Specifications - Vetus EHPA12R2 Manual De Instalación

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 manufactu-
rer'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.
7

Technical specifications

Type EHP
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
1)
Based on 'Fast Acting (F) fuse in accordance with the SAE J 1284 norm
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 ISO VG 15
Shell : Tellus 22
Esso : Nuto H22
Texaco : Rando oil HD22
BP : HLP22
14
020203.06
: EHPA R2
:
: 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)
:
:
: couplings for tubing 8 mm O.D./ 10 mm O.D. are separately available
:
1)
: 20 A 15 A
:
6

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 oper-
ating hours.
EHPB R2
Reversible, permanent magnet, DC motor
12 V
7.5 A
12.5 A
Plunger pump
3
700 cm /min (42.7 cu.inch/min)
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
2.3 kg (5 lbs)
Double check valve
Type of check valve
Relation piston-check-valve
Connections
Weight, excluding the connections : 2.2 kg (5 lbs)
EHPC R2
24 V 12 V
4.8 A 9.0 A
6.9 A 15 A
3
950 cm /min (57.9 cu.inch/min)
1) 1)
15 A 30 A
G 1/4
:
: Double-controlled check valves
: 4 : 1
: G 1/4 female thread
Electro-Hydraulic Pumps
24 V
6.0 A
8.9 A
1)
20 A