Wren RC-150 User manual

MODEL
RC-150
RC-350
RC-450
INSTRUCTION MANUAL

IMPORTANT RECEIVING INSTRUCTIONS:
Visually inspect all components for shipping damage. If any shipping
damage is found, notify carrier at once. Shipping damage is NOT covered
by warranty.The carrier is responsiblefor all repair or replacement cost re
sulting from damage in shipment.
IMPORTANT SAFETY INSTRUCTIONS:
WARNING: Your WREN Rebar Cutter is a power tool.To prevent injury to
operator or any bystanders from flying steel fragments,strictly observe the
following:
1. Read ALL instructions.
2. Keep work area clean and well lit.
3. Always wear safety goggle sand full face shield when cuting.
4. Consider the safety of others when cutting.
5. Use extreme caution
- When cutting pieces under 20cm in length,
- Watch for possible flying fragments.
6. Before cutting,steel bar must rest fully within cutter blades.
7. Always adjust spacing bolt and tighten before cutting.
8. Keep fingers away from cutting edges during operation.
9. Avoid damaging hydraulic hose
- Avoid sharp bends and kinks when routing hydraulic hoses. Using a
bent or kinked hose will cause severe back-pressure. Also, sharp bends
and kinks will internally damage the hose leading to premature failure.
- Do not drop heavy objects on hose. A sharp impact may cause internal
damage to hose wire strands. Applying pressure to a damage the hose
may cause it to rupture.
- Do not use the hydraulic hose to carry a hydraulic component (i.e.
pumps, valves, cutter head)
10. Keep hydraulic equipment away from flames and heat.
-Excessive heat will soften seals, resulting in fluid leaks. Heat also
weakens hose materials and packings. For optimum performance DO
O
NOT expose equipment to temperatures of 70 C or higher.
11. To prevent electrical shock,do not use cutter in a damp are
a or where it may become wet.
SAFETY FIR T !S
1

SPECIFICATIONS:
MODEL
CUTTING CAPACITY
CYLINDER CAPACITY
WEIGHT
CUTTING PRESSURE
DIMENSIONS
: RC150
: MAX.D15mm
: 20 TONS
: 14Kg
: MAX.70MPa
: 420mm(L)×105mm(W)×200mm(H)
MODEL
CUTTING CAPACITY
CYLINDER CAPACITY
WEIGHT
CUTTING PRESSURE
DIMENSIONS
: RC350
: MAX.D25mm
: 35 TONS
: 31Kg
: MAX.70MPa
: 580mm(L)×128mm(W)×240(H)
MODEL
CUTTING CAPACITY
CYLINDER CAPACITY
WEIGHT
CUTTING PRESSURE
DIMENSIONS
: RC450
: MAX.D35mm
: 45 TONS
: 49Kg
: MAX.70MPa
: 580mm(L)×167mm(W)×246mm(H)
2

CAUTIONS BEFORE USE:
- Make sure that the power supply is appropriate for the cutter.As mentioned
previously, the cutter requires a three phase 380V,50/60Hz..
- Be sure not to cut material with diameter or hardness that exceeds the
machine's capacity. Otherwise,not only the blades could be damaged but
also it could result in troubles with interior parts of the machine.
- Don't use the machine in a rainy or damp area,or where it may become wet.
- If the blades is damaged,cracked or distorted, replace it with a new one of
WREN genuine blades immediately.Using of damaged blades could cause
trouble with the cutter.
- Before delivery,hydraulic oil is filled completely.
- Before inspecting, disassembling or replacing parts of the cutter, be sure
to disconnect the power cord from the outlet.
DOUBLE INSULATION:
The double insulation is such that two different insulating materials are
used between alive portion, such as a conductor through which a current
flowes and an outer frame accessible by the human body. A motor-driven
tool haveing such a double insulation is called "double-insulated" and
identified with a special marking.
In case of a double-insulated motor, for example,even if one of the two
insulation is broken down, the other insulation still provides a protection
against an electrical shock,thus ensuring the high safety of the operator.
For maintaining the effect of this double-insulation and ensuring the safe
use of cutter for along term, the with other than specified ones or to
incorrectly reassemble the electrical system of the cutter. Replacement
with other than specified parts or incorrect disassembling/reassembling
of the electrical system will cause the double insulation to be broken down,
possibly leading to unsafe operation of the cutter.
To avoid the above,only specialized persons have to disassemble or
reassemble the electrical system or replace the parts of the system.
CONNECTING THE SYSTEM:
The cutter head and power pack are connected by a 70Mpa operating
hose. End of hose will have one male and one female connector.
Connect the hose to cutter head and pump.
3

OPERATING PROCEDURE:
1. Make sure that switch trigger works normally by pulling and releasing,
before starting to cut.
2. Set the steel bar on the bar holder between the blades. Make certain the
bar is resting fully within the blades. Don't attempt to partially cut through
the diameter of the bar. This will cause damage to the blades and cause
the steel bar to fly out.
3. By pulling switch,the cutter rod with blade moves toward the bar and cut
the bar. Keep the switch pulled until the cutter rod stops at the end of its
stocke and cuts the bar completely.
4. Cutter rod is returning automatically when the switch is released after the
rod makes full cutting stroke. Hold switch long enough to complete the
cutting stroke,then release.
NOTE: The cutter rod will not his home position automatically unless the
switch is released on the way, because hydraulic control valve
will not to be opened on the way of the full stroke. Even if the
power switch is turned on before the cutter rod has fully returned
to the initial position, the cutter rod will not move forward.
5. Use of warn or chipped blades will damage the machine. Replace with
new blades before using again.
6. The machine will only operate properly if the hydraulic oil is at its proper
level. Check oil level periodically.
7. The cutting capacity of the machine is falling as its temperature is rising.
If the machine temperature reaches 70 C or higher, cutting operation
should be stoped to allow the machine to cool.
INSURE THE CONNECTORS ARE FULLY ENGAGED AND SCREWED
SNUGLY AND COMPLETELY TOGETHER.
4

MAINTENANCE:
1. KEEP THE MACHINE CLEAN. It is especially important to keep the
sliding portion of cutter rod free from metal chips, scale, dirt or other
debris. To clean the cutter rod, turn on the power switch to move the
move the cutter rod several times and wipe any debris from the exposed
part of the cutter rod.
2. Ragulary tighten all fasteners and replace any worm components.
3. Check oil level periodicity.
PREVENTIVE MAINTENANCE -Hydraulic Power Packs:
WREN's Hydraulic Power Packs are precision-built hydraulic unit and, as
such, do require a certain amount of care and maintenance.
1. Hydraulic Oil: Oil should be completely changed after every 40 hours
of operation, or at least twice a year. Always make sure the reservoir is
filled with fluid. If additional oil is required, use only high-grade hydraulic
oil, such as Shell " Tellus oil"#46, Exxon " Teresstic"#46, Aral " Vitam DE"
#46 oder vergleichbares.
2. Quick-Disconnects: Fittings should be checked periodically for leaks.
Dirt and foreign materials should be kept away from fittings. Clean before
use.
3. Hydraulic Gauge: Gauges are liquid filled. Should this liquid level drop,
it indicates external leakage, and replacement it necessary. Should the
Gauge fill with hydraulic oil, it indicates internal failure and should be
discarded.
4. Filter on Pump: The filter should be replaced twice a year for normal
use, and more often if pump is in daily use.
5. Directional Control Valve: Should malfunctioning occur, disassemble,
inspect, and clean.
6. Motor: The motor shaft and bearings should be flushed and lubricated
once year.
7. Pumping Unit: The Pumping Unit should be overhauled every 2 years.
This can be done by WREN or by a qualified hydraulic service center.
5

TROUBLE SHOOTING:
Problem Cause Solution
1. Cutter rod does
not move forward
Oil shortage or no oil. Make up oil
Cutter rod has not returned
completely due to reinforcement
steel chips,iron power and dirt
present in the sliding portion of
cutter rod and bar holder.
Push back cutter rod.
Clean cutter rod
Cutter rod has not returned
completely due to the distortion
or swelling of cutter rod blade.
Tighten blade bolts.
Replace cutter rod blades
Cutter rod has not returned
completely due to weak cutter
rod return spring.
Replace
2. Although cutter rod
comes out cutting
power is toweak to cut
steel bar
Oil is insufficient
Make up oil
Contact between cylinder and
release valve is improper
(Tip surface of projection in
cylinder)
There are scratches at tip
surface of cylinder or iron power
or dirt are sticking there.
Clean or replace cylinder
Breakage of release valve
Replace
Improper clearence between
cylinder and piston
Replace
Replace
Replace
Replace
Replace
Replace
Improper contact between
cylinder and valve
Replace
Breakage of rubber packing
of cylinder
Replace
3. Oil leaks Scratches on or breakage of oil
leveler sack
Scratches at silding portion of bar
holder and cutter and at rod seal
packing
Breakage of liner at joint of bar
holder and cylinder
Breakage of liner at joint of
cylinder and pump case
Insufficient tightening of bolts at
respective parts
Tighten bolts
6

1 2 3 5 6 7 8 9 4 24 13 17 15 10
16
12
11
20
232221
1918
13
A B
C D
E
F
A
45678
1234
CAD - Zeichnung ! Nur DV - gest\U+0081tzt \U+201Endern !
Datum: Bearbeiter:
Ma á stab
1:1 Ruppert
16.02.98
MS 3500
WR E N M ac h i ne r y C o . ; Lt d .
Rebar Cutter Rc150/350
B
C D
E
F
5678
7

1 2
3
4
5678
9 10
1211 13
14 15
18 19
20
16 17
21 22 23
24 25
26
27
28
29
13
A B
C D
E
F
A
45678
1234
CAD - Zeichnung ! Nur DV - gest\U+0081tzt \U+201Endern !
Datum: Bearbeiter:
Ma á stab
1:1 Ruppert
16.02.98
MS 4500
WR E N M ac h i ne r y C o . ; Lt d .
Rebar Cutter Rc-450
B
C D
E
F
5678
8

Parts-List for Model RC150:
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Part name / Description
Bar holder
Blade
Wider
Cutter rod
Copper bushing
Cutter rod key
Cylinder
Stopper ring
Cutter rod return spring
Half coupler
Switch bracket
Switch
U-ring
O-ring
Bolt
Back-up ring
Cylinder cap
Spring pin
Spring pin
Set screw
Handing ring
Screw
Back-up ring
Wear ring
Q'ty
Unit
1
2
1
1
1
1
1
1
1
1
1
1
1
1
8
1
1
1
1
4
1
9
2
1
Code-No.
18031510
18031590
97015010
18031521
18031512
18031523
18031532
18031534
18031536
58400308
18031550
18031551
91015010
93015010
70851025
95015010
18031538
79860845
79860850
77850820
18031570
77850610
97015010
99015010
Part
Code
M6×10
M×10 25
M8 20×
φ5×45
φ5×35
CA-902
Remarks
Strength Class
12.9
Strength Class
8.8
Strength Class
8.8
9

Parts-List for Model RC350:
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Part name / Description
Bar holder
Blade
Wider
Cutter rod
Copper bushing
Cutter rod key
Cylinder
Stopper ring
Cutter rod return spring
Half coupler
Switch bracket
Switch
U-ring
O-ring
Bolt
Back-up ring
Cylinder cap
Spring pin
Spring pin
Set screw
Handing ring
Screw
Back-up ring
Wear ring
Q'ty
Unit
1
2
1
1
1
1
1
1
1
1
1
1
1
1
12
1
1
1
1
4
1
9
2
1
Code-No.
18033510
18033590
97035010
18033521
18033512
18033523
18033532
18033534
18033536
58400308
18033550
18033551
91035010
93035010
70851230
95035010
18033538
79860845
79860850
77850620
18033570
77850812
97035010
99035010
Part
Code
M8×12
M×12 30
M6 20×
φ8×50
φ8×45
CA-902
Remarks
Strength Class
12.9
Strength Class
8.8
Strength Class
8.8
10

Parts-List for Model RC450:
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Part name / Description
Bar holder
Blade
Screw
Screw
Stopper block
Screw
Bolt
Nut
Set screw
Handing ring group
Wider
Copper bushing
Stopper ring
Cutter rod return spring
Spring seat
Cutter rod key
Cutter rod
Wear ring
U-ring
Cylinder
O-ring
Back-up ring
Screw
Set screw
Half coupler
Cylinder cap
Switch
Switch bracket
Screw
Q'ty
Unit
1
2
2
2
1
3
1
1
6
1
1
1
1
10
1
1
1
1
1
1
1
1
14
2
1
1
1
1
2
Code-No.
18034510
18034590
70850830
70850825
18034511
70851640
57832090
61758620
77850812
18034570
97045010
18034512
18034534
18034537
18034538
18034523
18034521
99045010
91045010
18034532
93045010
95045010
71991230
77850520
54400104
18034538
18034551
18034550
71990612
Part
Code
M6×12
M×12 30
M×16 40
M8×30
M8×25
M8×12
M×20 90
M20
M5 20×
M12 30×
CA-901
Remarks
Strength Class
12.9
Strength Class
12.9
Strength Class
12.9
Strength Class
12.9
Strength Class
12.9
Strength Class
12.9
Strength Class
8.8
Strength Class
8.8
Strength Class
4.8
11