Ele GSP210 User manual

GSP210/250 Core Trimmer/Cut-Off Machine
70-0250
1 9901X0101 Issue 3
OPERATING INSTRUCTIONS
GSP210/250 Core Trimmer/Cut-Off Machine
70-0250
ELE International
Chartmoor Road, Chartwell Business Park
Leighton Buzzard, Bedfordshire, LU7 4WG
England
phone: [phone]
fax: [phone]
email: [e-mail]
http://www.ele.com
ELE International, a division of Hach Lange Ltd.
Distributor:
ELE International
Soiltest Product Division
PO Box 389, Loveland, CO 80539
USA
phone: [phone]
fax: [phone]
email: [e-mail]
http://www.eleusa.com
In the interests of improving and updating its equipment, ELE reserves the right to alter specifications to equipment at any time
ELE International 2006 

GSP210/250 Core Trimmer/Cut-Off Machine
70-0250
2 9901X0101 Issue 3
Contents
Section Page
1 Introduction 3
2 Safety Notes 3
3 Installation 3
4 Electrical Supply 3
5 Coolant 3
6 Cutting 3
7 Cutting Cores for Compression Test 5
8 Cutting Cubes 5
9 Maintenance 5
10 Lubrication –Spindle 5

GSP210/250 Core Trimmer/Cut-Off Machine
70-0250
3 9901X0101 Issue 3
1 Introduction
1.1 This unit, which is designed primarily for use in rock mechanics, can also be used in
mineralogy, ceramics and refractory sample preparation. Two vices are supplied, one
for securing regular and irregular samples up to 70 x 125 mm, and the other a V-vice to
enable the opposite ends of cores up to 57 mm diameter x 140 mm long to be cut
parallel and square to the longitudinal axis. Cores longer than 140 mm can be
prepared by reversing the specimen in the vice. The unit can also be used to prepare
small cubes. Coolant is supplied to the cutting disc by means of mains water or by the
Pump Unit 70-0310 series.
Approximate dimensions 406 x 915 x 760 mm. Rated power 750 W.
2 Safety Notes
Important: always use ear protectors and goggles when using the machine. Avoid
loose clothing. Take extreme care when cutting. Ensure the vice is fully tightened. Do
not put hands inside the machine whilst cutter is revolving.
3 Installation
3.1 This machine should be installed on a flat surface.
3.2 To fit diamond wheel or abrasive wheel, remove end cover of wheel guard, nut and
outer wheel flange. Swing water pipes forward clear of wheel by releasing pipe nut
inside wheel guard. Clean faces of wheel flanges, mount wheel on spindle, replace
outer wheel flange and nut. To tighten nut insert tommy bar through collar of wheel
guard into spindle to prevent spindle turning while tightening nut. Replace cover of
wheel guard. Reset water pipes either side of wheel and tighten pipe nut.
4 Electrical Supply
Electrical safety
Warning: Before removing any covers or performing maintenance repair and service,
isolate from electrical supply by removing mains plug. Where mains supply is required
during these activities, only competent persons should perform the work.
4.1 Check that the power supply is compatible with the requirements stated on the label
and connect in accordance with IEE regulations or to local requirements.
4.2 It is advised that this machine be connected via a residual current device (not
supplied), and it should operate if earth leakage current exceeds 0.03 amps.
4.3 The power cable is coded as follows:
Brown wire L Live or Power
Blue wire N Neutral
Green/Yellow wire E Earth or Ground
Exercise extreme caution when using the machine with wet hands. Dry hands before
operating machine.
5 Coolant
5.1 Connect hose to hose nipple on water pipes and connect other end to coolant pump
hose nipple on coolant tank or to main water if no coolant tank is in use. Connect hose
to drain nipple on machine tray and insert other end through hole in coolant tank lid or,
if main water is being used, away to waste.
6 Cutting
6.1 Three types of vice are supplied:-

GSP210/250 Core Trimmer/Cut-Off Machine
70-0250
4 9901X0101 Issue 3
(a) Vice is used for irregular shaped samples of various sizes (Picture 1).
(b) Vice is used for cutting or trimming small cores using a cutting wheel and then
the double faced cupped wheel for parallel and flat testing faces (Picture 2).
(c) Vice is used for cutting rectangular or square shaped specimens (Picture 3).
(d) Water spray is used in conjunction with the double-faced cupped wheel EL70-
0920 (Picture 4).
(e) Water spray is used in conjunction with the cutting disc EL70-0270 (Picture 5).
(f) Shows the use of the spanner with the tommy bar placed through the hole in
the main shaft (Picture 6).
Picture 1 Picture 2
Picture 3 Picture 4
Picture 5 Picture 6
6.2 Firmly grip specimen to be cut in vice in position with cutting wheel and in line with
plane of desired cut.
6.3 Switch on coolant and set to steady flow with control tap on coolant pipe switch on
cutting disc.

GSP210/250 Core Trimmer/Cut-Off Machine
70-0250
5 9901X0101 Issue 3
6.4 Feed specimen into cutting wheel by operating handle at front of machine. When
cutting on angled or irregular surfaces feed very slowly until cutting wheel is fully
entered into specimen. Fast feeding at the start of cut causes the cutting wheel to
deflect from a true cutting path and thus produces a cut face which is not flat.
6.5 To produce further cuts, move specimen forward in the vice the desired amount and
repeat cut.
6.6 Diamond wheels must not be used without coolant. Abrasive wheels can be used dry
but this usually results in heavy wear.
7 Cutting Cores for Compression Test
7.1 Clamp the core in the vee blocks, first setting the centre block at suitable spacing to
support the core inside the desired cut length. The left hand vee should not be moved.
The right hand vee block is to support the cut off piece of core in cases where the core
is much longer than the desired cut length.
7.2 Set the slide at the zero line which is 1.5 mm (1/16 inch) to the left of the rule zero. This
allows for wheel thickness. Lock slide with lock screw on front of slide.
7.3 After making sure the core is firmly clamped, cut through at the zero reading, return
slide to position where the cutting disc is clear of the vee blocks and clamps. Move
slide to the left until you read off the length on the rule and repeat cut.
7.4 The start of all cuts should be done carefully to avoid wheel deflection, which can
produce a cut out of square.
8 Cutting Cubes
8.1 These can be produced from 25 mm (1 inch) to 50 mm (2 inches) dimension. First cut
a slice from the core to desired dimension as cutting instruction on previous page, thus
producing two parallel faces. Lay the slice in the left hand vee block with one parallel
face on the rear vee face clamp and cut two more faces on the same readings as first
two cuts, producing a square prism with radius end faces. Lay the prism in the vee
block with radius ends protruding either side and repeat cuts to produce cube.
9 Maintenance
9.1 Coolant tank and pipes should be cleaned out and disinfected regularly, excessive
sludge accumulation can result in water pipes becoming clogged and water supply
failing during cutting. This may result in diamond wheel damage. To clear water pipes
first clean machine, tray and tank and fill with fresh coolant. Next remove screws which
seal the ends of the water pipes and flush through. If the small jet holes in water pipes
are clogged, clear with small piece of wire. Replace screws and check all jets are
working.
10 Lubrication –Spindle
10.1 The spindle is grease lubricated and should be greased once a month. Be careful to
replace grease nipple caps to prevent abrasive dust entering bearings. Recommended
Grease –Total Multis EP2 or similar.

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