Table of Contents
Advertisement
HD 9000 E USA
B. Design and function
5.961-163 A 2006087 (09/03)
Operating instructions
5. Functional description
Water inlet
(see Figure B.3)
The storage tank (7) is filled with water via the „water
inlet" float valve (6) (provided on site).
The water level is kept constant via this „water inlet" float
valve (6). A float switch sends a signal to the pump
controls if there is a water supply shortage in the storage
tank (7).
The high-pressure pumps (16, 17) are then switched off,
in order to protect them against running dry.
In case of faults, which cause the storage tank (7) to
overflow, the water can flow away via the overflow (5).
The storage tank (7), including the equipment, is not
included in the standard extent of supply.
High-pressure pumps
(see Figure B.3)
Each high-pressure pump (16, 17) is driven by an electric
motor. The pumps pump the water to the pressure side
under high-pressure. When the motors are started up the
bypass valve (9) is open. This connects the pressure and
suction sides of the pumps and prevents the pressure
from falling. The motors can start up gently without load.
High-pressure side
(see Figure B.3 and B.4)
The high-pressure water is passed via non-return valves
(10, Figure B.3) to a high-pressure collector. The gantry
(2, Figure B.4) or underbody wash (1, Figure B.4) are
then supplied.
The vibration dampers (14, Figure B.3) smooth the
pulsating water pressure due to the piston strokes.
The pressure can be read off at the manometer (11,
Figure B.3). If the pressure exceeds the maximum opera-
ting pressure, the pressure switch (12, Figure B.3) swit-
ches off. The safety valves (15, Figure B.3) provide
additional safety.
English
B6
Advertisement
Table of Contents
