NLB 1312D User manual

Revision 12
1312D, 1012D, 812D, 612D,
512D, 412D, 3.512D, 312D,
1060D, 860D, & 760D
Diesel Engine Driven,
High Pressure Water Jetting Units
OPERATION,
MAINTENANCE &
PARTS MANUAL
NLB Cor .
29830 BECK ROAD
WIXOM, Ml 48393-2824
[phone]
FAX [phone]
PARTS
1-800-227-7652
© Copyright October, 2005 NLB Corporation

Revision o
GENERAL INFORMATION
Every effort has been made to include the most up-to-date information at the time of
publication of this manual. However, the possibility exists that subsequent product changes
made by NLB Corporation may cause the information in this manual to be rendered
inaccurate. In the event that an information conflict is found to exist between this manual,
other publications or the condition and function of your equipment, NLB must be contacted
for clarification prior to operating or servicing the equipment.
Caution:
The information contained in this manual may be rendered inaccurate if the
equipment described herein is modified in any way, without the authorization
of NLB, or that said equipment is not maintained or operated in a proper
manner as instructed in this manual. NLB assumes no responsibility or
liability for equipment that has been modified, for equipment that
incorporates any non-NLB manufactured parts as components or for
equipment that has not been maintained or used in the manner set forth in
this manual. In that event, all NLB warranties, either express or implied, are
void.
WARNING:
THE EQUIPMENTDESCRIBED IN THIS MANUAL AND THE INFORMATION
CONTAINED IN THIS MANUAL SHOULD ONLY BE USED BY PERSONS WHO
ARE KNOWLEDGEABLE AND HAVEBEEN TRAINED IN THE OPERATION
AND/OR MAINTENANCE OF EQUIPMENT OF THE TYPE DESCRIBED HEREIN.
THE EQUIPMENT OWNER AND/OR USER SHOULD INSPECT THE EQUIPMENT
PRIOR TO ITS USE OR SERVICE IN ORDER TO MAKE CERTAIN THAT IT IS IN
GOOD WORKING ORDER AND FREE FROM DEFECT. ALL APPLICABLE
OPERATION, USE
AND SERVICEMANUALS DESCRIBING THE FORESEEABLE
USES OF THE EQUIPMENTMUST BE READ AND UNDERSTOOD. THE
EQUIPMENTMUSTONLY BE USED IN THE MANNER SETFORTH IN THIS
MANUAL, AS SUPPLEMENTED BY ALL APPLICABLEFEDERAL, STATE AND
LOCAL LAWS, ORDERS AND REGULATIONS THATPERTAIN TO THE
OPERATION AND USE OF THE EQUIPMENT. IF THIS EQUIPMENT JS
OPERATED BEYOND ITS INTENDED CAPACITYOR FORESEEABLE USE, IS
MISUSED, MODIFIED OR ABUSED IN ANY WAY WHATSOEVER, OR IF IT IS
NOTMAINTAINED IN ACCORDANCE WITH THE INSTRUCTIONS CONTAINED
IN THIS MANUAL, WITH NLB APPROVED PARTS; DEATH, SEVERE PERSONAL
INJURYOR EQUIPMENT DAMAGE MAYRESULT.
NLB WARRANTY WILL BE VOIDED IF NON-NLB MANUFACTURED
REPLACEMENTPARTS ARE USED. NLB'S WARRANTYIS VOID AS TO ANY
DAMAGES CAUSED TO THE EQUIPMENT OR BY THE EQUIPMENTAND TO
EXCLUDE ANY LIABILITY AS A RESULT OF INJURY, IF SUCH DAMAGEOR
INJURYCAN BE LINKED TO THE SUBSTANDARD REPLACEMENT PART.
© Copyright September, 1999 NLB Corporation 0-1

Revision 11
MASTER TABLE OF CONTENTS
1312D, 1012D, 812D, 612D, 512D, 412D, 3.512D, 312D, 1060D, 8600,
& 760D
Diesel Engine Driven,
High Pressure
Water Jetting Units
DESCRIPTION PAGE NUMBER
Section 1 - INTRODUCTION
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
I. Purpose & Objectives of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
II. Manual Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Section 2 - SAFETY
Table of Contents 2-1
I. Safety Precautions That Must Be Observed By User .................... 2-2
II. Safety Aspects of High Pressure Water Cleaning Systems ............... 2-8
III. Recommended Practices For The Use of Manually Operated High Pressure
Water Jetting Equipment .......................................... 2-12
Section 3 - PRODUCT OVERVIEW
I.
II.
Table of Contents ............................................... 3-1
General Description
............................................. 3-2
Water Condition ....................................... '. ........ 3-2
III. Specifications .................................................. 3-3
IV.
Bill of Materials & Assembly Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Section 4 - OPERATION CONTROL
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
I. Machine Control ................................................ 4-2
II. Pre-Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
III. Operating Procedures
............................................ 4-14
Section 5 - PREVENTIVE MAINTENANCE
Table
of Contents ............................................... 5-1
I. Preventive Maintenance Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
II. Preventive Maintenance Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
III. Suggested Component Cleaning Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
IV. Lubrication Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
V. Winterizing Procedure ........................................... 5-20
VI. Sample "Maintenance Record" ..................................... 5-23
© Copyright June, 2005 NLB Corporation
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Revision 11
MASTER TABLE OF CONTENTS (Cont.)
Section 6 - TROUBLE-SHOOTING
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
I. Trouble-Shooting Guidelines ...................................... 6-2
II. Trouble-Shooting Procedures ...................................... 6-3
III. Trouble-Shooting Guide .......................................... 6-5
Section 7 - SPECIAL TOOLS
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
I. Special Tool Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 -2
Section 8 - REPAIR
Table of Contents ............................................... 8-1
I. Repair Overview ................................................ 8-2
II. High Pressure Water Jetting Unit Repairs ............................ 8- 7
III. Electrical System ............................................... 8-80
Section 9 - PARTS
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
I. Model & Serial Numbers ......................................... 9-2
II. Assembly Drawings & Parts Lists .................................. 9-3
Section 10 -CUSTOMER SUPPORT
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
I. NLB Corp. Customer Service Department ............................ 10-2
II. Ordering Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
HJ Warranty Policy . . . .. . . . . . . . . . . . . . . . . . 10--4.
IV. Parts Return Authorization (RA) Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5
V. How To Package Parts To Be Returned .............................. 10-10
VI. Return Authorization Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11
MANUFACTURERS' LITERATURE
Diesel Engine
CUMMINS
JOHN DEERE
Electronic Engine Controller (JOHN DEERE Diesel Engine)
CONTROLS INCORPORATED
Power Take-Off
TWIN DISC
© Copyright June, 2005 NLB Corporation 0-3

Revision 11
MASTER TABLE OF CONTENTS (Cont.)
MANUFACTURERS' LITERATURE (Cont.)
Water Inlet Bag Filter Assembly (Optional) -FSP85
FSI
© Copyright June, 2005 NLB Corporation
0-4

Revision 11
NLB Cor
Manufacturer of the National Liquid Blaster
CALIFORNIA
Proposition 65 Warning
29830 BECK ROAD
WIXOM,
Ml 48393-2824
[phone]
FAX[phone]
Diesel engine exhaust and some of its constituents are known
to the State of California to cause cancer, birth defects and
other reproductive harm.
© Copyright June, 2005 NLB Corporation
0-5

Revision O
TABLE OF CONTENTS
SECTION 1
INTRODUCTION
DESCRIPTION PAGE NUMBER
I. Purpose & Objectives of Manual. ................................... 1-2
II. Manual Organization ............................................ 1-3
A. Terminology ................................................ 1-3
B. Illustrations & Photographs .................................... 1-4
C. Revisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
© Copyright September, 1999 NLB Corporation 1 -1

Revision O
I. Purposes & Objectives of Manual
This manual is mandatory reading for all personnel who will be operating or performing
maintenance and/or repairs on the NLB high pressure water jetting equipment. The manual
must also be distributed to maintenance supervisors responsible for work planning,
scheduling, training, performance evaluating, and reporting. While some sections will be of
more interest to equipment operators, others are for the use of the maintenance personnel. It
is specifically developed to assist operating and maintenance personnel and is not intended as
a replacement or substitution for customer developed maintenance criteria. The manual
describes safety features, start-up procedures, recommended preventive maintenance
agendas, troubleshooting activities, special tool descriptions, and repair procedures. As
further assistance to maintenance personnel, there are recommended spare parts lists,
photographically reproduced drawings, bills
of materials, and assembly drawings which may
list other drawings that can be consulted as reference. The information contained in this
manual supplements instructions preferred by the customer.
There is also a section on safety, located in this binder, intended to point out certain safety
precautions and procedures applicable to high pressure water jetting equipment. The safety
section contains NLB's instructions concerning safe operation and service
of the equipment.
Certain governmental regulations and industry practices may also apply to the operation and
service
of the equipment. If an information conflict is found to exist between NLB's
instructions and other regulations or practices, NLB must be contacted for clarification prior
to operation or service
of the equipment.
Insure that all persons involved with the operation and service
of the equipment have
thorough knowledge
of that equipment and are familiar with the location and operation of all
stopping devices. Except
in cases of extreme emergency, permit only authorized personnel
to start or stop any equipment in the system. Confine operation of the equipment to
authorized operators. Leave repair functions
to trained maintenance personnel.
Be alert to hazardous conditions such as sharp edges and protruding objects, and replace any
broken parts causing these conditions
as soon as possible. Maintain good housekeeping
practices. Clean up all spilled lubricants and other material as promptly as possible. Report
all accidents resulting in damage to equipment and any irregularities in equipment operation
to the proper authority.
Reliability
of mechanical equipment depends largely on sound maintenance procedures. All
NLB high pressure water jetting equipment should be thoroughly inspected at regular
intervals and corrective measures must be taken to prevent major breakdowns and a loss
of
valuable operation time.
A well organized program should be part
of any maintenance plans. If a log is maintained
with sufficient information, a multi-purpose will be accomplished: first, a record
of trouble
and responsibility is available; secondly, the log can be reviewed periodically for equipment
© Copyright September, 1999 NLB Corporation "1 -2

Revision O
evaluation; and lastly, as a historical record. From the information collected, frequency of
inspection and performance change methods could be made. This would then, over a period
of time, make the maintenance program more effective. The PREVENTIVE
MAINTENANCE section includes a suggested maintenance record form to accomplish these
tasks.
Factors
of significant importance that must also be considered are adjustment procedures,
lubrication instructions, troubleshooting, and replacement
of parts. These factors are
thoroughly discussed in other sections of this manual.
Note:
Do notattempt to perform maintenance or make adjustments on any equipment
without first consulting this manual.
Note:
Replacementparts mustbe genuine NLB parts. The use of anyotherparts could
create a hazardous situation. Also, the use
of any otherparts will void all warranties
on this equipment.
To order replacement parts call toll-free 1-800-227-7652.
II. Manual Organization
A standard section arrangement has been adopted for the instructional sections of this
manual. Each section has at least one page in each of the following categories:
a, Table of contents
b. Body of the section
A. Terminology
The following describes the usage of Note, Caution and Warning terms in this manual:
Note:
Key Information: "Note" is used to give special emphasis to instructions or additional
information concerning a function, step, or action to be taken.
Caution:
Minor Personal Injury and/or Equipment Damage: "Caution" is used to indicate the
presence
of a hazard which can or will cause minor personal injury or equipment damage if
the caution is ignored.
© Copyright September, 1999 NLB Corporation 1 -3

Revision O
WARNING:
Severe Personal Injury and/or EquipmentDamage: "WARNING" is used to indicate the
presence
of a hazard which can or will cause severe personal injury, death, or substantial
equipment damage ifthe warning
is ignored.
B. Illustrations &Photographs
Use the illustrations and photographs in this manual as a guide to perform the action,
maintenance, or repair described. Many illustrations are generic and will not look exactly
like the high pressure water jetting equipment or the parts used in your unit. In order to
provide clarity to illustrations and photographs, some illustrations and photographs show
parts removed that are not related to the specific parts given in the text.
C. Revisions
This manual is a living document. It is revised whenever there are changes to the high
pressure water jetting equipment embodied in this manual.
In the upper left hand corner
of each page is a revision record, listing the number of revisions
that have occurred to that page or section from the initial establishment of this manual to the
present time. When contacting NLB for clarification of information contained in this
manual, please indicate the revision number of the page in question.
© Copyright September, 1999 NLB Corporation 1-4

Revision 1
TABLE OF CONTENTS
SECTION 2
SAFETY
IMPORTANT:
PLEASE READ THIS SECTION COMPLETELYBEFORE OPERATING ANY OF
THE HIGH PRESSURE WATER JETTING EQUIPMENT.
DESCRIPTION PAGE NUMBER
Table of Contents
I. Safety Precautions That Must
Be Observed By The User ............... .
A. Operator Safety Equipment ................................... .
B. Pre-Service Safety Check List
................................. .
C. Recommended Safety Procedures Decal
......................... .
II. Safety Aspects
of High Pressure Water Cleaning Systems .............. .
A. Equipment
................................................. .
B. Personal Protective Equipment
................................. .
C. Pre-Operational Procedures ................................... .
D. Operational Procedures
....................................... .
E. Training . . . . . . . . . . . . . . . .
................................... .
III. Recommended Practices For The Use
of Manually Operated
High Pressure Water Jetting Equipment
............................. .
A. Introduction
................................................ .
B. Scope
..................................................... .
C. Definition of Terms .......................................... .
D. Equipment Definition and Standards
............................ .
E. Care and Maintenance
of Equipment ............................ .
F. Protective Clothing and Personnel Protection ..................... .
G. Pre-Operating Procedures .................................... .
H. Operational Procedures
....................................... .
I. Use
of Lances and Nozzles .................................... .
J. Operational & Training Requirements ........................... .
K. Permanent Cleaning Areas .................................... .
L. Freeze Precautions .......................................... .
M. Accidents
.................................................. .
N. Responsibility .............................................. .
© Copyright January, 2001 NLB Corporation 2-1
2-1
2-2
2-2
2-4
2-6
2-8
2-8
2-9
2-10
2-11
2-11
2-12
2-12
2-12
2-13
2-14
2-17
2-19
2-20
2-21
2-26
2-27
2-28
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2-29
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Revision 3
WARNING:
NLB WARRANTY WILL BE VOIDED IF NON-NLB MANUFACTURED
REPLACEMENTPARTS ARE USED. NLB'S WARRANTYIS VOID AS TO ANY
DAMAGES CAUSED TO THE EQUIPMENTOR BY THE EQUIPMENT AND TO
EXCLUDE ANY LIABILITY AS A RESULT OF INJURY, IF SUCH DAMAGEOR
INJURYCAN
BE LINKED TO THE SUBSTANDARD REPLACEMENT PART.
I. Safety Precautions That Must Be Observed By User
Refer to the SAFETYsection before operating any high pressure water jetting components.
Do
not operate this or any high pressure water jetting component or system without first
reading and understanding the SAFETYsection.
If the SAFETYsection is missing from this
binder, call NLB at
1-800-226-7652 for a free copy.
Safety Signs:
All NLB high pressure water jetting equipment have safety signs strategically placed on the
equipment.
If any become marred, painted over, or in any manner unreadable, contact NLB
for free replacements. These signs are furnished as an aid to training employees and as a
reminder to operators and their fellow employees. The safety signs are not intended to be
used as a substitute for a specific company training program covering the operation and
safety
of the equipment. It is supervision's responsibility to call these signs to the attention
of all personnel.
A. Operator Safety Equipment
NLB offers complete operator safety suits for high pressure waterblasting operations and
recommends the use of all operator and jobsite safety equipment that is available. NLB also
offers operation, maintenance & parts manuals and jobsite barrier marking tape.
Caution:
The use of hearing protection is advised when operating this equipment.
© Copyright September, 2003 NLB Corporation 2-2

Revision 2
TURTLESKIN1!t
WATERARMORTM
© Copyright April, 2003 NLB Corporation
2-3

Revision 1
B. Pre-Service Safety Check List
The Pre-Service Safety Check List (Figure 2-1) is attached to all NLB high pressure water
jetting units.
If it becomes marred, painted over, or in any manner unreadable, contact NLB
for a free replacement.
Identical printed forms are available from NLB.
In addition to checking off the information
on the unit decal, the job foreman should also fill out and sign one (1) of the printed forms
to
be maintained in the company.
© Copyright January, 2001 NLB Corporation 2-4

Revision 1
PRE-SERVICE SAFETY CHECK LIST -HIGH PRESSURE WATER CLEANING
DATE: LOCATION: _____________________ _
EQUIPMENT BEING SERVICED:
_________________________ _
1 IN
THE AREA, INCLUDING OTHER END OF UNIT BEING SERVICED,
CLEAN, ROPED OFF, AND PROPER SAFETY SIGNS POSTED?
2 HAVE PRECAUTIONS BEEN TAKEN TO PROTECT ELECTRICAL
EQUIPMENT FROM WATER?
3 IS THERE ANY HAZARD TO PERSONNEL FROM POSSIBLE DAMAGE
TO
EQUIPMENT SUCH AS RELEASE OF CORROSIVE CHEMICALS,
FLAMMABLE LIQUIDS OR GASES, ETC.?
4 ARE ALL FITTINGS OF THE CORRECT PRESSURE RATING?
5 ARE ALL HOSES OF THE CORRECT PRESSURE RATING?
6 ARE
ALL HOSES IN GOOD OPERATING CONDITION?
7 ARE ALL FITTINGS IN GOOD OPERATING CONDITION?
8 ARE ALL NOZZLES FREE FROM PLUGGING? AND IN GOOD
OPERATING CONDITION?
9 HAVE PRECAUTIONS BEEN TAKEN TO PREVENTLINEMOLE
REVERSAL?
10 IS THE FILTER ON THE PUMP SUCTION CLEAN AND IN GOOD
OPERATING CONDITION?
11 IS THERE A MINIMUM 20 PSIG FRESH CLEAN WATER SUPPLY AT
PUMP SUCTION?
12 HAVE PRECAUTIONS BEEN TAKEN AGAINST FREEZING?
13 DO ALL PERSONNEL HAVE THE PROPER SAFETY EQUIPMENT FOR
THIS JOB?
14 DO ALL PERSONNEL HAVE THE PROPER SAFETY TRAINING FOR THIS
JOB?
15 ARE ALL MEN QUALIFIED TO PERFORM THIS WORK?
16 ARE EXPLOSIVE OR FLAMMABLE VAPORS POSSIBLE AND ARE
MONITORING PROVISIONS ESTABLISHED?
17 IF ANSWER TO 16 IS "YES", DO NOT USE DEMINERALIZED WATER OR
CONDESATE AND GROUND LANCE EQUIPMENT BEING CLEANED.
·18 IS THERE ANY DANGER FROM THE WASTE WATER OR FROM THE
REACTION OF THE SCALE AND WATER?
19 IF ANSWER
TO 18 "YES", HAS PROPER PERSONAL PROTECTIVE
EQUIPMENT BEEN SUPPLIED
TO PREVENT INJURY, AND HAS
PERSONNEL BEEN INFORMED
OF THIS ADDITIONAL HAZARD?
20 HAS COMPLETE HOOK-UP BEEN FINISHED PRIOR TO INSTALLING
NOZZLES?
21 HAS HOOK-UP, INCLUDING PIPES, HOSES AND CONNECTIONS, BEEN
PRESSURE TESTED WITH WATER AT MAXIMUM OPERATING
PRESSURE?
22 IS DUMP SYSTEM OPERATING PROPERLY? (WILL IT DUMP WHEN
RELEASED)?
23 ARE SAFETY SYSTEMS OPERATIONAL?
Figure 2-1. Pre-Service Safety Check List.
© Copyright January, 2001 NLB Corporation
2-5
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Revision 1
C. Recommended Safety Procedures Decal
The recommended Safety Procedures Decal (Figure 2-2) is attached to all NLB high
pressure water jetting units.
If it becomes marred, painted over or in any manner unreadable,
contact NLB for a free replacement.
© Copyright January, 2001 NLB Corporation 2-6

Revision 1
IMPORTANT RECOMMENDED SAFETY PROCEDURES
AS WITH ALL POWER TOOLS, THE NATIONAL LIQUID BLASTER MUST BE USED IN
ACCORDANCE WITH SPECIFIED SAFETY PROCEDURES AND COMMON SAFETY SENSE. TO
AID IN INSURING
THAT THIS EQUIPMENT IS OPERATED WITH A MAXIMUM AMOUNT OF
SAFETY.
WE HAVE PREPARED THE FOLLOWING LIST OF RECOMMENDATIONS. THIS LIST IS
NOT INTENDED TO BE ALL INCLUSIVE AND ADDITIONAL SAFETY PRECAUTIONS SHOULD BE
FOLLOWED. AS THEY ARE DICTATED BY THE APPLICATION. PLANT SAFETY PROCEDURES
AND PARTICULAR WORKING CONDITIONS.
1. SAFETY EQUIPMENT
TO BE WORN BY OPERATORS.
A. GOGGLES
B. HARD HELMET WITH EAR PROTECTION
C. STEEL TOED SHOES
D. HEAVY-DUTY RUBBER UNIFORMS AND GLOVES
2. THE LANCE MUST ALWAYS BE DIRECTLY POINTED AT THE WORK AREA.
3. THE OPERATOR MUST MAINTAIN GOOD FOOTING.
4. NON OPERATORS MUST REMAIN A SAFE DISTANCE FROM THE OPERATOR. THE
DISTANCE SHOULD BE A MINIMUM OF 25 FEET.
5. NON OPERATORS SHOULD NEVER APPROACH THE OPERATOR WITHOUT FIRST
TURNING THE SAFETY ELECTRICAL SWITCH OFF
AT THE UNIT.
6. THE OPERATING PRESSURE SHOULD NEVER EXCEED THAT WHICH IS NECESSARY TO
ACCOMPl.,ISH THE JOB.
7. NO UNAUTHORIZED ATTACHMENTS OR MODIFICATIONS SHOULD BE MADE TO THE UNIT.
THE CLEANING GUN, OR THE ACCESSORIES.
8. OPERATORS SHOULD BE CHANGED ON FREQUENT INTERVALS TO AVOID FATIGUE.
9. OPERATORS AND ALL PERSONS WITHIN THE OPERATING AREA SHOULD NOT ENGAGE IN
"GOOFINGOFF" PRACTICES.
10. EQUIPMENT SHOULD BE PROPERLY MAINTAINED AS OUTLINED IN THE MAINTENANCE
MANUAL.
11. ALL OPERATORS SHOULD BE PROPERLY TRAINED AS OUTLINED IN THE MAINTENANCE
MANUAL.
12. EQUIPMENT SHOULD BE CLEANED OFTEN TO PREVENT DIRT AND OTHER BUILD-UPS.
Figure 2-2. Recommended Safety Procedures Decal.
© Copyright January, 2001 NLB Corporation 2-7

Revision 1
II. Safety Aspects of High Pressure Water Cleaning Systems
For maximum operational safety, the following equipment and manual procedures must be
used where applicable:
A. Equipment
High Pressure Pump
The principal component of the high pressure water jetting cleaning system is usually a
positive displacement high pressure pump which discharges water into a common manifold
to which flexible hoses or lances with nozzles or other cleaningor cutting accessories are
attached. The pumps are appropriately powered and can be either mobile or permanently
mounted. They shall never be operated above NLB's recommended operating pressure.
ReliefSystem
The system shall be equipped with an automatic relief device on the discharge side of the
pump, adjusted so that the maximum allowable working pressure of the system is not
exceeded by more than 3%.
Pressure Gauge
The system shall be equipped with a gauge to indicate the pressure being developed.
Filter or Strainer
The water system shall be equipped with a filter or strainer to prevent particles from entering
the high pressure pump and damaging the plungers.
Dump System
The system shall be equipped with a device which will by-pass the flow or dump the
discharge pressure
to a safe level immediately when actuated. An operator shall control this
dump system.
Hose Assembly
Hose assemblies used on the discharge side of the pump shall have a safety factor of 3.0
based on the manufacturer's rated minimum burst pressure.
Fittings/Valves
All fittings and valves used in the discharge side of the pump shall have a safety factor of 3.0
based on the tensile strength of the materials.
Electrical Controls
All electrical controls handled by personnel shall be either fail safe, low voltage or protected
with an approved ground fault circuit interrupter.
© Copyright January, 2001 NLB Corporation 2-8

Revision 1
B. Personal Protective Equipment
It is essential that each operator wear the appropriate protective equipment to accomplish the
job safely. The following is a list of NLB recommended safety equipment:
Body Protection
Liquid resistant suits
Head Protection
Head protection equipment -hard hats
Eye and Face Protection
Protective eye and face equipment -face shields
Foot Protection
Steel-toed boots
Hand Protection
NLB safety gloves
Ear Protection
Ear plugs or other suitable protection shall be worn when noise level exceeds OSHA
recommended levels.
Recommendation
The safety engineer or someone thoroughly familiar with the potential hazards to be found at
the location where the work is being performed should be consulted prior to starting work to
determine potential environmental and/or personal problems peculiar
to that specific task. If
any are determined to exist, appropriate action must be taken prior to starting the job.
© Copyright January, 2001 NLB Corporation 2-9

Revision 1
C. Pre-Operational Procedures
Planning
Pre-job planning shall take place prior to start of any job. Personnel familiar with the
equipment to be cleaned and the environment of the work area shall meet with the personnel
who will be doing the cleaning or cutting and outline the potential hazards of the work area,
environmental problems and safety standards.
Check List
A safety and equipment check list shall be used.
Barricades
Barricades shall be erected to enclose hazardous areas. Barricades may be rope, safety tapes,
barrels, etc.,
as long as an effective visible barrier is provided.
Hook-Up
Inspect all hoses and fittings for evidence of excessive wear and damage prior to installing.
Hoses should be laid out in a safe and orderly manner.
Hoses, pipes and fittings shall be supported
to prevent excessive sway, vibration or stress on
end connections. Hoses should be protected
to prevent kinking or excessive wear.
Nozzles
Before installing the nozzle, the system shall be completely flushed with sufficient water
to
remove air and foreign particles.
Inspect all nozzles for damage and/or plugged orifices before installing. The high pressure
water jetting unit should be shut off and disconnected before installing nozzles.
© Copyright January, 2001 NLB Corporation 2-10