Vetus HT1012 Instructions D'installation page 7

1 Introduction
The hydraulic tank is the central part of any hydraulic system.
The valves required for driving hydraulic motors (for example
a hydraulic bow thruster motor or a hydraulic anchor windlass
motor) are fitted on the hydraulic tank.
The hydraulic tank is supplied as standard with all necessary
valves pre-mounted.
2 Description and working
The hydraulic tank consists of the following components:
1 Tank: This serves both for the storage and the cooling of
the hydraulic oil in the system.
2 Base plate: The necessary valves are mounted on this.
3 Valves: Necessary for driving the hydraulic motors.
4 Filler cap/ return filter/ air vent*: In order to fill the tank
with hydraulic oil/ for filtering the oil which flows back into
the tank.
5 Combined thermometer/ depth gauge: To check the tem-
perature and the quantity of oil.
6 drain connections: to connect the various drain pipes.
7 Suction connection to the hydraulic pump
8 Pressure connection from the (2nd) hydraulic pump
9 Suction connection to the 2nd hydraulic pump (option-
al)
10 Connection for manometer
'Power Hydraulics', Hydraulic installation
3 Installation
3.1 General pointers
- Always work with clean tools and in clean surroundings. Dirt
and moisture are the biggest enemies of hydraulic systems.
- There are 2 sorts of connections within hydraulic systems:
a) thread connection with O-ring
Never use a locking or sealing agent!
b) thread connection without O-ring (for example BSP and
NPT thread)
Always use a locking or sealing agent; this is ideally suited
for hydraulic connections! Always clean the connections
thoroughly making sure they are grease free.
- Check that all connections are tight after installation.
3.2 Positioning the hydraulic tank
Always fit the hydraulic tank horizontally.
4 rubber vibration dampers can be delivered as extras
(HT3010). It is recommended that the tank be placed on
these dampers.
There needs to be about 15 cm free room on all sides of the
tank in order to allow the valves to be fitted.
3.3 Valves
3.3.1 General
Two or more valves have
been fitted, depending
on the configuration:
1 valve for bow thruster
2 valve for stern thruster
3 valve for anchor wind-
lass
4 valve for installation
for lowering the mast
5 '1-step load-sensing'
valve or' 2-step load-
sensing' valve
See pages 34 - 37 for diagrams of the hydraulic system.
Because of the pattern of the holes the valves can only be fitted
in one way.
Use the vetus® logo on the valve which is already fitted to see
how the other valves should be fitted.
If the bolts cannot be fitted easily then the valve is not posi-
tioned correctly.
Before fitting always check that the 4 O-rings in the valve are
positioned correctly in the O-ring chambers. If necessary use
acid-free Vaseline to hold the O-rings in their correct places.
ENGLISH
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