IMER COMBI 250 V Guide

OPERATING, MAINTENANCE, SPARE PARTS
MANUAL
SAWING MACHINE
6/2002-R1
- Cod. 3210213 -
IMER U.S.A. Inc.
207, Lawrence Avenue
South San Francisco, California 94080
[phone] IMER EAST
221 Westhampton Place
Capitol Heights, MD 20743
Tel 301 - 336 - 3700
Fax 301 - 336 - 6681
IMER WEST
207 Lawrence Avenue
So. San Francisco, CA 94080
Tel 650 - 872 - 2200
Fax 650 - 873 - 6482

COMBI 250 V
2
IMER U.S.A. Inc.
Dear Customer,
Congratulations on your choice of purchase: IMER saws are
the result of years of experience and are equipped with all the
latest technical innovations.
- WORKING IN SAFETY.
To work in complete safety, read the following instructions
carefully before using the machine.
To work in complete safety, read the following instructions
carefully before using the machine.
This OPERATIONAND MAINTENANCE manual must be kept on
site by the person in charge, e.g. the SITE FOREMAN, and
must always be available for consultation.
The manual is to be considered integral part of the machine
and must be kept for future reference until the machine is
disposed of. If the manual is damaged or lost, a replacement
may be requested from the manufacturer.
The manual contains important information regarding site
preparation, machine use, maintenance procedures, and
requests for spare parts.
Nevertheless, the installer and the operator must both have
adequate experience and knowledge of the machine prior to
use.
To guarantee complete safety of the operator, safe operation
and long life of equipment, follow the instructions in this
manual carefully, and observe all safety standards currently in
force for the prevention of accidents at work (use of safety
footwear and suitable clothing, helmets, gloves, goggles etc.).
- Make sure that all signs are legible.
- It is strictly forbidden to carry out any form of
modification to the steel structure or working parts of
the machine.
IMER INTERNATIONAL declines all responsibility for failure to
comply with laws and standards governing the use of this
equipment, in particular; improper use, defective power
supply, lack of maintenance, unauthorised modifications, and
partial or total failure to observe the instructions contained in
this manual.
IMER INTERNATIONAL reserves the right to modify features of
the saw and contents of this manual, without the obligation to
update previous machines and/or manuals.
1. TECHNICAL DATA
Technical data are stated in table 1 and electrical
specifications in table 2.
F e a tu r e 11 5 /6 0 H z
P o w e r (k W ) 1 .1
R a te d vo lta g e (V ) 11 5
F re q u e nc y (H z) 6 0
A b s o rb e d c urre nt 1 4 .4
N um b e r o f p o le s 2
rp m 3 4 0 0
S e rvic e typ e S 6 4 0 %
Ins ula tio n c a te g o ry F
P ro te c ti o n c a te g o ry IP 5 5
C a p a c ito r (µ F ) 11 0 (Ø 5 0 x1 2 0 )
2. DESIGN STANDARDS
The saws have been designed and manufactured according
to the following european standards: EN 292-1-2; EN 60204-
1;EN 12418.
3. NOISE EMISSION LEVEL
Table 3 specifies the sound emission levels measured on the
saw (Lwa) in accordance with EN ISO 3744 and the sound
pressure level measured at the ear of the operator under no
lload conditions (LPA) .
TABLE 3
SAWING MACHINE TYPE OF MOTOR LPALWA
CM250 V ELETRIC 70 85
4. GENERAL SAW DESCRIPTION
4.1 General description:
The Combi 250 V is a saw comprising the following main sub-
groups :
- cutting head (ref. A fig.1).
- sliding guide (ref. B fig.1).
- water collection tank (ref. C fig.1).
- frame (ref. D fig.2).
- cutting surface (ref. F fig.2).
- stand (ref. G fig.5).
The cutting head is mounted on a reinforced aluminium profile
and is equipped with horizontal and vertical movement
facilities.The aluminium profile is hinged onto sheet steel arms
(ref.H fig. 5) and the entire unit can rotate through 45° ( fig. 6)
by means of the relative handwheels (ref.L fig. 7).
The cutting surfaces are positioned on the tubular frame of the
saw which is placed on the tank constructed in impact-
resistant plastic.
The water immersion pump is mounted below the cutting
surfaces on a special bracket and supplies a water distributor
inside the blade guard for cooling the cutting blade during
operation.
The high resistance plastic handle (ref.M fig. 6), is equipped
with the main ON-OFF switch on the operator side to facilitate
saw activation and shutdown.The raised position of the red
OFF button on the handle is designed to facilitate shutdown of
the machine in the event of an emergency. The motor
capacitor is located in a protected position inside the handle.
The saw is fitted with a guard to guarantee optimal safety
during operation and to protect the user during cutting cycles.
A valve is mounted above the blade guard to adjust the flow
rate of water delivered to the cutting blade.
4.2 Processable materials:
This saw has been designed for cutting the following
materials: ceramic tiles, masonry and stone in general with
TEC HN ICAL DATA - Table 1
Model COMBI 250 V
Max. diamond blade diameter 10 inches
Diamond blade hole diameter 1 inches
Single phase motor (115V 60Hz )
output 1.1 Kw
Max. blade rotation speed (115V
60Hz) 3.400 rpm
Worktop dimensions 500x840 mm
90° cut length (th=16mm) 660mm
Length of cuts from above 785mm
Maximum cut depth w ith single
stroke 66 mm
Maximum cut depth w ith two strokes 95 mm
Water pump flow rate 10 L/min
Water tank capacity 42 L
Machine dimensions 1040x560x640mm
Packed machine dimensions 1050x570x660mm
Weight w ith packaging 41 Kg

COMBI 250 V
3
IMER U.S.A. Inc.
maximum dimensions compatible with the length, cutting depth
and dimensions of the surfaces specified in Table 1.
Maximum weight of processable materials: 25 kg.
4.3 Unsuitable material :
Materials unsuitable for this machine are all those not specified
in paragraph 4.2.
In any event, before using the saw with materials other than
as specified by the manufacturer for this saw model, contact
IMER INTERNATIONAL S.p.A.
- Use of this machine with workpieces outside the
specified dimensions is strictly prohibited and constitutes
a hazard for the operator.
5. OPERATION SAFETY
- Before using the saw, ensure that all protection
devices are fitted.
- Never use the saw in environments subject to the
risk of explosions, fire or underground.
The saw is not fitted with specific lighting and therefore the
workplace must be sufficiently lit for this purpose.
The power lines must be laid to prevent any possible damage.
Never stand the saw on the power supply cable.
Ensure that the electrical connection is protected against the
risk of water penetration in connectors. Use exclusively
connectors and couplings equipped with water spray
protection.
- Never use inadequate or makeshift electrical lines or cables
without earthing; if in doubt consult a specialised technician.
- Repairs to the electrical circuit must be performed
exclusively by specialised personnel. Disconnect the machine
from the power supply before performing maintenance or
repairs.
6. GENERAL SAFETY WARNINGS
Note that this machine has been designed to ensure optimal
performance and maximum safety: however the operator must
also guarantee this level of safety by paying special attention
to the machine throughout all work phases.
1. Ensure that an efficient earthing system is
installed.
2. Work only with all protection devices fitted
correctly and in efficient working order.
3. Keep the machine clean: general cleaning
(and the work surfaces in particular) represents an
important safety factor.
4. Always stop the machine and disconnect from
the power supply before cleaning or removing any
protection device (for maintenance or disassembly
purposes).
If water jets are used for cleaning, never point jets
directly at the power supply unit or electric motor.
5. Remove rings, watches, bracelets or ties before
using the machine; these elements constitute a serious
hazard to the operator.
Also ensure that sleeves are tight around the wrists,
hair is tied back and robust footwear is used.
6. Never cut workpieces that have dimensions or
weight that are not suited to machine i capacity as
specified by the manufacturer (see point 4.2)
7. Always use personal protection devices such
as safety goggles, suitably sized gloves, ear muffs or
plugs and hair caps when necessary.
8. Use original diamond blades as recommended
by the manufacturer to ensure optimal performance of
the machine.
9. Always keep hands well away from the working
zone while the machine is running; before removing
workpieces from the blade area, always press the stop
pushbutton to shut down rotation.
10. The instructions in this manual are aimed at
machine users (operators, maintenance engineers).
11. Never use diamond blades that are chipped or
deformed.
12. Never use blades over the rotation speed
specified by the manufacturer.
13. Use exclusively water-cooled continuous rim
blades suited to the material to be cut.
14. Never dry cut material or cut when cooling
water levels are low.
15. Ensure that the machine, with or without stand,
is placed on a stable surface with a maximum
inclination of 5°.
7. SAFETY DEVICES
The COMBI 250 V has been constructed taking into account
current harmonised European safety standards.
According to machine directive 98/37/EEC all safety devices
have been installed with the aim of safeguarding the operator.
7.1 Guards and safety devices
The machine is equipped with fixed guards, secured by
means of screws and protections that prevent access to
moving or dangerous parts.
All fixed guards, covers, shields fixed by means of screws
have been envisaged to protect the operator (maintenance
engineers, technicians and others) from possible accidents
cause by electrical discharge or moving mechanical parts.
Therefore use of the machine with guards removed or
modified in any way is strictly prohibited.
Before performing maintenance or repairs to the
machine, turn it off via the main switch and disconnect
from the power supply to prevent inadvertent start-up
and isolate all machine electrical circuits.
8. MACHINE INSTALLATION
8.1 Lifting and handling
The Combi 250 V saw weights 39 Kg and can be moved by
means of the side handles on the tank (ref.N fig.5).
Always empty the tank before moving the machine.
8.2 POSITIONING.
The machine must be placed on a smooth surface that is at
least as large as the tank, with the saw on the relative stand.
-Ensure that the stand is positioned on the relative
inserts on the tank base and thus secured.
The correct side for the operator is as shown in Fig.3 position
X.
In the event of moving the saw, take care to secure the head
by means of the fixing knobs (ref.O, L fig.7) and carry the
machine by means of the handles on the tank (ref.N fig.5)
after disconnecting the power supply.
Always remove the plug from the mains power before
moving the machine.
8.3 STAND ASSEMBLY
The stand is supplied pre-assembled. Before use complete
assembly by inserting the foot (ref.T fig.5) in the stand frame
and tightening the screw and nut (ref.U fig.5).

COMBI 250 V
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IMER U.S.A. Inc.
9. ELECTRICAL CONNECTION
- Ensure that voltage corresponds to machine
dataplate specifications
.
Connect the machine to an efficient earthing system.
The size of the power cable wires must be based on
operating current and length of the power line to prevent
excessive voltage drops (ref.Table 4).
C om bi250 V - Ta b. 4
C ab le len gth (m ) V115
I= 14.4 A 0 ÷ 12 13 ÷ 20 21 ÷ 32
C ab le (m m ²) 1 .5 2.5 4
-Ensure that the electric line has a suitable
differential overload switch(RCD)(GFCI-USA).
Connect the saw plug to the mains .
- The saw is now ready for operation.
11. SAW START-UP
Connect the mains power cable to the plug on the electrical
panel.
Then start the saw by means of the switch on the handle
(ref.
P fig.6) , comprising two buttons: green for start, red for
stop.
The switch is fitted with low voltage protection; in the event
of accidental power failure, press the green button again to
resume operation.
In the event of an emergency, press the red pushbutton to
shut down the machine and disconnect the plug from the
power mains.
THERMAL CUTOUT PROTECTION:
- The electric motor is protected against overload
by a thermal cutout; in the event of overheating this
device shuts down the motor.
Cool the motor and restart by means the main switch
on the handle (ref.P fig. 6).
12 . MACHINE USE
Operation
The correct side for the operator is shown in fig. 3 ref X.
Fill the water tank to the maximum level (approx. 42 litres).
Connect the machine to the power mains and start as
described in paragraph 11.
Open the valve (ref.V fig.7) and ensure sufficient flow of
cooling water to the diamond blade.
Cutting
Place the material to be cut on the cutting surface against the
fence at the required angle using a protractor.
Adjust the height of the cutting head by means of the
handwheel (ref. R fig. 6).
Ensure that the handwheels for angled cuts (ref. L fig. 7)
and tightened fully down.
Start the saw as described in paragraph 11.
Proceed with cutting moving the saw head by means of the
handle.
In the event of blade rotation shutdown due to excessive
force, free the disk by moving it forwards and wait for the
saw to reach normal operating speed before resuming
operation.
Angled cuts
Loosen the handwheels (ref.L fig. 7), set the cutting head at
the required angle, retighten the handwheels, and proceed
as described in the point above.
Ensure that the tank is kept full during all work phases and in
the event of prolonged work intervals replace water
regularly and remove all processing residue.
Press the workpiece by hand onto the cutting surface.
Apply sufficient pressure on the handle to move the cutting
head without blocking the blade.
13 . Maintenance
13.1 Premise
Routine maintenance operations can also be performed by
non-specialised personnel provided that all safety standards
specified in the relative sections of this manual are observed
at all times.
13.2 Machine cleaning
The machine should be cleaned exclusively when it is
stationary.
- All power switches must be set to “0” and plugs
must be disconnected from the mains.
♦ Never use compressed air; this could cause infiltration of
dust or residue in enclosed parts
.
♦
Ensure that the cooling water nozzles are not obstructed .
♦
Above all the cooling water in the tank must be changed
every day
.
♦
Recommended product for cleaning and lubricating the
mechanical parts of the saw: WD40
13.3 Waste disposal
As regards disposal of processing waste observe all current
legislation in the country of use.
13.4 Repairs
Repairs to the electrical installation must be performed
exclusively by specialised personnel. Use exclusively
original IMER spare parts; modifications to parts are strictly
prohibited. The special design of the COMBI 250 V ensures
that no other maintenance other than as specified above is
required.
Ensure that the contacts of the power plug and plug-switch
assembly are efficient. If oxidation is detected, clean
immediately
13.5 Cleaning the tank
Clean the tank in the event of build-up of sediment on the
base, or at least once a day. Failure to clean the tank could
impair operation of the immersion pump used for circulation
of the diamond blade cooling water.
13.6 Blade replacement
The diamond blade is made of material that may be damaged
when subject to high temperatures, and therefore must be
cooled during the work phases.
To replace the blade, proceed as follows:
1.Block axial movement of the cutting head by means of the
handwheels (ref. O fig. 7).
2. Disassemble the front guard (ref.D fig.4).
3. Loosen the locknut by rotating clockwise (left thread),
using a 19 mm wrench.
4. Move the cutting head forward slightly and incline to
remove the blade from its seat.
5 . Ensure that there are no foreign objects between the
fixing flange and diamond blade. During disassembly, avoid
use of tools that could dent or deform the flange.
6 . Insert the new blade proceeding in reverse order of the
operation described at point 4. Take special care to ensure
correct direction of rotation of the diamond blade.
7. Tighten the blade locknut fully down by rotating
anticlockwise (left thread), to a torque of 40 Nm.
13.7 Cleaning the cooling water supply circuit
At regular intervals (or when the flow rate of the blade
cooling water is reduced) clean the cooling water supply
circuit. To do this, disassemble the delivery nozzle (ref. S fig.
4) located inside the blade guard and clean in water.
Periodically clean the cooling water delivery line between the
pump and valve, (ref.V fig. 7) and blade guard using water.