JETStream 3000 series - Component Identification; UNx Pump; Manifold; Manifold Drain Valve

Bareshaft Pump
5
COMPONENT IDENTIFICATION
Before operating the unit it is necessary to fully understand each component and how it functions. Following is a
brief description of the unit’s main components.
UNx Pump
The UNx pump uses the power from the engine
to pressurize the source water into high pressure
output. The pump is separated into two sections, the
power end and the uid end.
The power end contains the components that drive
the pump. It is also referred to as the “crank end”
because it contains a crankshaft.
The uid end contains the components that determine
the output pressure of the pump. The operator may
change the output pressure and ow of the pump
by changing the components in the uid end. The
uid end is also referred to as the “wet” end as this is
where the water travels in and out of the pump.
Refer to the pressure specic catalogs (15K, 20K
and 40K) for detailed exploded views and compo-
nent part numbers for the uid and power ends. The
catalogs are available at the following website:
http://www.waterblast.com/Service_and_Support/Resourc-
es/Download_Literature.aspx
Manifold
The manifold houses many of the components that
make up the uid end of the pump including the
uni-valves. The three uni-valves each consist of
a suction and discharge valve combined into one
assembly. The valves convert low pressure water to
high pressure water.
Manifold Drain Valve
The manifold drain valve allows the manifold to be
ushed of contaminants prior to pump usage. It is
also used to purge air during operation start up.
Water Lubrication System
The water lubrication system provides water to the
packing in the pump. The water lubricates and cools
for optimum operation of the pump. The system
includes a manifold and three water lines. Needle
valves are present on manifolds that are pressure
fed (all 40K units). The needle valves control the
amount of ow to each stufng box and must be
properly adjusted during operation. Manifolds that
are not pressure fed have a xed ow.
Pressure Gauge
The liquid lled pressure gauge allows the operator
controlling the pump to monitor the pressure of the
system.
Figure 1: Bareshaft Pump.