Cengar JSZ User manual

AIR SAWS FOR THE PROFESSIONAL
JSZ
operating instructions

CENGAR AIR SAW MODEL JSZ
2 3
EU DECLARATION OF CONFORMITY
We recommend normal safe working practices should be followed as
per the Health and Safety at Work Act, or the appropriate National
and State Laws. We recommend that eye and ear protection be
worn when using Cengar Saws.
SPECIFICATIONS
Speed 400/600 strokes per minute
Stroke 57mm
Air Compsumption 0.168m3/minute
Air Pressure 5-6 Bar
Weight 5.5Kgs
Length 448mm
Height 141mm
Width 54mm
Vibration Level Averaged 1.38m/s2
Sound Pressure Level 80.5db
Sound Power Level 89.9db
Atex Certification II 2G Ex h IIC T3 Gb
Each machine is marked with a serial number, which contains the
year and month of construction, along with an identifier number.
Serial number example:
10 20 15
Identier number
Year of constructionMonth of construction
We the undersigned, declare under our sole responsibility that the following apparatus:
Machine Description Cengar Air Saw
Machine Type JSZ
Is in conformity with the following relevant EC legislation:
Machinery Directive 2006/42/EC
Atex Directive 2014/34/EU
Based on the following Harmonised Standards:
EN ISO 4414:2010 EN ISO 80079-36:2016
EN ISO 80079-37:2016 EN 60079-0:2018
ADDITIONAL INFORMATION
ATEX Coding II 2G Ex h IIC T3 Gb
Notified Body
(Atex holding technical file)
Element Materials Technology Rotterdam B.V.
Voorerf 18, 4824 GN Breda, Netherlands
Identification Number 2812
Certificate No. EMT18ATEX 0032X
Authorised Signature
Date 06/02/2020
Title of Signatory Technical Manager - Cengar Ltd.
Springfield Works, Saddleworth Road, Greetland, Halifax HX4 8LZ
Special Conditions
of Safe Use
(on the certificate)
1. Suitably approved static dissipating or conductive air hose only to be attached to the
equipment and terminated to the air supply.
2. Operator to ensure that there is less than 1 Ohm resistance between the
ground at the air source and any metallic object to be cut with the equipment.
3. The equipment shall be supplied from a clean air source in an area known to not contain a
potentially explosive atmosphere.
4. A lter must be tted to the supply compressor inlet to prevent dust airow
within the equipment.
5. To comply with ATEX certication regulations it is necessary to use Cengar
branded Blades with Cengar Saws.
1. Under normal working conditions can be used in a Zone 1 environment.
2. Classification based on tests cutting a selection of steels & composite materials (MB, MC, Yellow, JSZ ) Blades
And therefore complies with the essential requirements of those directives.
The following ignition hazards have been identified when the equipment is in use, hot surfaces, mechanical sparks,
electrostatic charging. These are mitigated as the equipment was designed to meet the requirements of protection
concept constructional safety “c”.

5
1. Always read the instructions.
2. Always wear safety glasses.
3. Fit the spigot (CP1/3) into the appropriate
side of the clamp in the front of the two
holes in the clamp body and tighten
securing nut.
4. Position the clamp on the pipe with the
chain around the pipe and tighten using
the tommy bar (end of CP1/6). Ensure the
clamp is perpendicular to the pipe for an
accurate cut.
5. Invert machine and remove oil plug
(8316). Fill the cavity with Cengar Green
Oil and replace plug.
6. Without connecting the air supply, t the
appropriate blade with the teeth upper
most. Ensure BOTH screws are fully
tightened using supplied T key.
7. Mount the machine onto the spigot whilst
pulling back clamp securing pin (8315).
Slide the machine into the groove in the
spigot. Ensure it is correctly located.
8. When mounted correctly the blade should
be under the pipe so that the weight of
the machine applies the cutting force to
the blade.
9. If using a long blade (MJ450) for larger
diameter pipes attach the supplied bow
guide using the xings provided to ensure
a straight cut is achieved.
10. Attach air supply (5-6 bar).
11. Press the trigger to start the machine and
lock trigger in place with the catch. Gently
bring the blade into contact with the
work gradually release the weight of the
machine to allow the cut to take place
without extra force.
12. When the cut is complete release the
catch to stop the machine. Remove air
supply before attempting to remove
machine from spigot (reverse of 5 above).
DO’S & DON’TS
1. ALWAYS use Cengar green oil for best results. Keeping
the saw clean and well oiled will give excellent reliability,
and a long life.
2. ALWAYS use Cengar Bi-Metal Shatterproof blades,
for safety, and best cuttng performance.
3. ALWAYS isolate the air supply when changing blades.
4. ALWAYS wear eye protection when using sawing machines.
5. ALWAYS isolate the machine when not in use.
6. ALWAYS keep others away from the saw blade
to prevent injury or trapping.
7. ALWAYS have machines vibration tested annually to
ensure exposure is kept to the minimum.
1. NEVER t breakable “All-Hard” blades in Cengar saws,
these can shatter causing injury to yourself and others.
2. NEVER operate saw without wearing safety glasses.
3. NEVER operate saw whilst you, or others are near the
saw blade, which can cause serious injury or trapping.
4. NEVER use excessive force, this may increase vibration
above safe levels.
5. NEVER hold the Cengar saw in a vice by the body, this
will distort the bores, rendering the tool inoperative.
6. NEVER screw nameplates to the body, as the screws
may penetrate an airway or bore.
7. NEVER operate the Cengar saw without lubrication.
8. NEVER be tempted to clean internal parts with anything
other than a clean lint free cloth, and M.S. Cleaner, or
Cengar Green oil.
9. NEVER modify Cengar saws or use non Cengar parts,
this will invalidate ATEX approval, and warranty.
AVAILABLE BLADE PITCHES
Thickness
(mm) 14 TPI 10-14 TPI Varipitch 10 TPI 8 TPI 6 TPI
10 6 5 4 3 2
15 8 7 6 5 4
20 11 9 8 6 5
25 14 12 10 8 6
30 17 14 12 9 7
35 19 17 14 11 8
40 22 19 16 13 9
45 25 21 18 14 11
50 28 24 20 16 12
55 30 26 22 17 13
60 33 28 24 19 14
65 36 31 26 20 15
70 39 33 28 22 17
75 41 35 30 24 18
80 44 38 31 25 19
85 47 40 33 27 20
90 50 43 35 28 21
95 52 45 37 30 22
100 55 47 39 31 24
CENGAR BLADE SELECTION FOR
CUTTING SOLID MATERIAL
INSTRUCTIONS
4
AIR SAWS FOR THE PROFESSIONAL
JSZ
operating instructions
availablein other languages on-line
The numbers in the coloured boxes indicates the actual number of teeth which will be in contact with the work
GENERAL RULE:
No less that 3 teeth in contact
Ideally between 6 and 12 teeth
in contact
No more than 24 teeth in contact
Visit our website www.cengar.com to view our range of blades, clamps and accessories.
8
7
10
12
11a 11b
BLADE SELECTION
Pipe Diameter (mm) JSZ/JSM
150 300mm blade
300 450mm blade

JSZ EXPLODED VIEW
6 7
ITEM PART NO. DESCRIPTION NUMBER
PER TOOL ITEM PART
NO. DESCRIPTION NUMBER
PER TOOL
18301 Handle 120 8319 Conn. Rod Guide 1
250034 Valve in Handle 121 8320 Silencer Guard 1
3&4 8303 Trigger & Catch 122 8324 Nosepiece 1
59334A Spring 123 54160 Screws – Nosepiece 2
651834 Pins for Trigger 324 53034M Screws 2
78306 Oil Plug & Seal 125 53034M Screws 4
88307F Filter 126 8310 Piston 2
98308 Valve Unit Complete 127 8310LS Piston Seal 2
10 8307 Gasket 228 8312 Link to Pistons 1
11 8309Z Body 129 8318 Connecting Rod 1
12 8314 Speed Regulator 130 55516 Blade Grip Screws 2
13 5012 ‘O’ Ring 231 51114 Pins to Piston 2
14 5006 ‘O’ Ring 132 51114 Pin to Conn Rod 1
15 8315A Spring 133 0291 ‘O’ Ring 1
16 8315 Clamp Securing Pin 134 54134M Screws – Handle 6
17 8314C Regulator Retainer 135 8316 Front End Bracket 1
18 55161 Centre Shaft 136 9332C Détente Ball 1
19 8313M Screw for above 137 - Serial Number -
ADDITIONAL CENGAR SAWS AVAILABLE
PL905 CL75
CS75 JP901
Steel Sections Bolts, Gratings etc. up
to 6mm thick and 25mm Composites.
Steel Pipe up to 150mm dia
and similar size sections.
High Quality Steel Pipe up to 150mm
dia and similar size sections.
Sheet Materials up to 3mm thick
and 6mm Composites.

SERVICE
We offer a full factory repair
and refurbishment service for
Cengar Saws, normally within
5 working days. Quotations at
no charge can be given before
work is carried out.
DISTRIBUTOR
ADDRESS
Cengar Ltd.
Springfield Works,
Saddleworth Road,
Greetland, Halifax,
England HX4 8LZ
Tel: [phone]
Fax: [phone]
[e-mail]
www.cengar.com
Original Instructions Document No. MANJSZENG/01 Issue 12 (Feb ‘20)