JETStream 3000 series, Operation Manual, Page: 10 / 84

Operation Manual
2
General Safety Precautions
Read Instructions
Read and follow all the manufacturer’s instructions prior
to using any waterblast product. Contact the manu-
facturer if unsure of any details.
Further instructions for safe operation are located
in the Jetstream Safety Manual. Read this manual
before operating the equipment.
Inspect Equipment
Inspect the condition of all components prior to use.
Do not use any item that is in suspect condition. If
unsure about the condition of a component, ask a
supervisor or maintenance personnel for instruc-
tions. Use only components that are marked with a
recommended operating pressure. Never exceed the
operating pressure of the weakest component in the
system.
Check Pressure Ratings
All components in the
system must be properly
rated for the intended
operating pressure. Refer to
the Safety Manual for more
information on pressure
ratings.
Rupture Discs
Installation of two rupture discs is necessary to pro-
tect the pump and operators.
• Rupture disc ratings: one at 120% of operating
pressure, one at 140% of operating pressure
Check Connections
Check the condition of the connection threads prior
to making any high pressure connection. For 15,000
psi (1000 bar) and lower pressures use at least four
wraps of Teflon tape on male pipe (NPT) threads for
sealing purposes. Do not allow any tape to overlap
the end of the fitting. Tape fragments may enter the
system’s water stream and clog the nozzle’s orifices.
Apply a coat of anti-seize compound over the Teflon
sealant to prevent “galling” or seizing of threads.
For “Jetstream
®
20K”; “type M”; “MP (20K)” and “HP
(40K)” connections use anti-seize compound on the
threads and the male cone.
Tighten Connections
Properly tighten all high pressure connections.
Hand-tighten pipe (NPT) fittings and then tighten
with a wrench another 1-1/2 to 2 full revolutions. Do
not exceed two revolutions on NPT threaded con -
nections. \
Use caution when using a pipe wrench. Pipe
wrenches can cause deep scoring leading to weak-
ened components.
Refer to the Technical sections in the 15K, 20K and
40K catalogs or at the following web page for more
information and torque specifications for the various
fittings used on these units.
http://www.waterblast.com/Service_and_Support/
Resources/Download_Literature.aspx
Use Two Operators
Use at least two operators when waterblasting. The
primary operator handling the cleaning device must
maintain control of the water discharge at all times.
The secondary operator controlling the waterblast
unit must be positioned a safe distance of at least 12
ft. (3.7 m) from the blast operation.