Westinghouse PT50350 User manual

INSTRUCTION MANUAL
PT50350
4 ½" ANGLE GRINDER
NOTE: Before operating this tool, read this manual
and follow all safety rules and operating instructions.
5A
600W
rpm
12,000
120V
60Hz
4½
INCHES CUS

THE LABEL ON YOUR TOOL MARK FOLLOWING SYMBOLS:
WARNING SYMBOLS
TECHNICAL DATA
2
WARNING!
When using electric tools, basic safety precautions, including the following, should
always be followed to reduce the risk of fire, electric shock and personal injury. Read all
these instructions before operating this product and save these instructions.
1. Wear eye protection!
2. Wear ear protection!
3. Warning!
4. Before use read Instruction handbook!
V ---- Volts
A ---- Amperes
Hz -- Hertz
n ---- RPM no load speed
1 2 3 4
TYPES PT50350
Grinding disc (outside diameter x
inside diameter x thickness): 4 ½” x 1/8” y 4 ½” X ¼”
Rated voltage: 120v
Frecuency: 60Hz
Power input: 600W
No load RPM: 12,000/min
Spindle: 5/8-11
Thermal class of engine: 130
Sound pressure level (according to
EN 60745) 91.5dB+3 (A)
Sound power level (according to
EN 60745): 102.5+3 dB (A)
Vibration level (according to EN
60745):
Surface grinding:10.5+1.5
m/s
2，
Disc sanding:6.4+1.5
Weight: 1.9 kg
External dimensions (in mm): 310x128x106
---- Alternating current
---- Double insulation
Class II

SAFETY INSTRUCTIONS
3
a) This power tool is intended to function as a grinder, sander, wire brush, polisher or
cut-off tool. Read all safety warnings, instructions, illustrations and specifications
provided with this power tool. Failure to follow all instructions listed below may result in
electric shock, fire and/or serious injury.
b) Operations such as grinding, sanding, wire brushing, polishing or cutting-off are not
recommended to be performed with this power tool. Operations for which the power tool
was not designed may create a hazard and cause personal injury.
c) Do not use accessories which are not specifically designed and recommended by the
tool manufacturer. Just because the accessory can be attached to your power tool, it
does not assure safe operation.
d) The rated speed of the accessory must be at least equal to the maximum speed
marked on the power tool. Accessories running faster than their rated speed can break
and fly apart.
e) The outside diameter and the thickness of your accessory must be within the capacity
rating of your power tool. Incorrectly sized accessories cannot be adequately guarded or
controlled.
f) The arbour size of wheels, flanges, backing pads or any other accessory must
properly fit the spindle of the power tool. Accessories with arbour holes that do not
match the mounting hardware of the power tool will run out of balance, vibrate excessi-
vely and may cause loss of control.
g) Do not use a damaged accessory. Before each use inspect the accessory such as
abrasive wheels for chips and cracks, backing pad for cracks, tear or excess wear, wire
brush for loose or cracked wire. If power tool or accessory is dropped, inspect for
damage or install an undamaged accessory. After inspecting and installing an acces-
sory, position yourself and bystanders away from the plane of the rotating accessory
and run the power tool at maximum no-load speed for one minute. Damaged acces-
sories will normally break apart during this test time.
h) Wear personal protective equipment. Depending on application, use face shield,
safety goggles or safety glasses. As appropriate, wear dust mask, hearing protectors,
gloves and workshop apron capable of stopping small abrasive or workpiece fragments.
The eye protection must be capable of stopping flying debris generated by various
operations. The dust mask or respirator must be capable of filtrating particles generated
by your operation. Prolonged exposure to high intensity noise may cause hearing loss.

4
SAFETY INSTRUCTIONS
i) Keep bystanders a safe distance away from work area. Anyone entering the work
area must wear personal protective equipment. Fragments of workpiece or of a broken
accessory may fly away and cause injury beyond immediate area of operation.
j) Hold power tool by insulated gripping surfaces only, when performing an operation
where the cutting accessory may contact hidden wiring or its own cord. Cutting acces-
sory contacting a “live” wire may make exposed metal parts of the power tool “live” and
shock the operator.
k) Position the cord clear of the spinning accessory. If you lose control, the cord may be
cut or snagged and your hand or arm may be pulled into the spinning accessory.
l) Never lay the power tool down until the accessory has come to a complete stop. The
spinning accessory may grab the surface and pull the power tool out of your control.
m) Do not run the power tool while carrying it at your side. Accidental contact with the
spinning accessory could snag your clothing, pulling the accessory into your body.
n) Regularly clean the power tool’s air vents. The motor’s fan will draw the dust inside
the housing and excessive accumulation of powdered metal may cause electrical
hazards.
o) Do not operate the power tool near flammable materials. Sparks could ignite these
materials.
p) Do not use accessories that require liquid coolants. Using water or other liquid
coolants may result in electrocution or shock.

SAFETY INSTRUCTIONS
5
KICKBACK AND RELATED WARNINGS
Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad,
brush or any other accessory. Pinching or snagging causes rapid stalling of the rotating
accessory which in turn causes the uncontrolled power tool to be forced in the direction
opposite of the accessory’s rotation at the point of the binding.
For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of
the wheel that is entering into the pinch point can dig into the surface of the material
causing the wheel to climb out or kick out. The wheel may either jump toward or away
from the operator, depending on direction of the wheel’s movement at the point of
pinching. Abrasive wheels may also break under these conditions.
Kickback is the result of power tool misuse and/or incorrect operating procedures or
conditions and can be avoided by taking proper precautions as given below.
a) Maintain a firm grip on the power tool and position your body and arm to allow
you to resist kickback forces. Always use auxiliary handle, if provided, for maximum
control over kickback or torque reaction during start-up. The operator can control torque
reactions or kickback forces, if proper precautions are taken.
b) Never place your hand near the rotating accessory. Accessory may kickback
over your hand.
c) Do not position your body in the area where power tool will move if kickback
occurs.
Kickback will propel the tool in direction opposite to the wheel’s movement at the point
of snagging.
d) Use special care when working corners, sharp edges etc. Avoid bouncing and
snagging the accessory. Corners, sharp edges or bouncing have a tendency to snag
the rotating accessory and cause loss of control or kickback.
e) Do not attach a saw chain woodcarving blade or toothed saw blade. Such
blades create frequent kickback and loss of control.

SAFETY INSTRUCTIONS
6
ADDITIONAL SAFETY INSTRUCTIONS FOR GRINDING
a) Use only wheel types that are recommended for your power tool and the specific
guard designed for the selected wheel. Wheels for which the power tool was not
designed cannot be adequately guarded and are unsafe.
b) The guard must be securely attached to the power tool and positioned for maximum
safety, so the least amount of wheel is exposed towards the operator. The guard helps
to protect operator from broken wheel fragments and accidental contact with wheel.
c) Wheels must be used only for recommended applications.
d) Always use undamaged wheel flanges that are of correct size and shape for your
selected wheel. Proper wheel flanges support the wheel thus reducing the possibility of
wheel breakage.
e) Do not use worn down wheels from larger power tools. Wheel intended for larger
power tool is not suitable for the higher speed of a smaller tool and may burst.

7
OPERATION
Installing the side handle
The side handle should always be used during operation. Screw the handle into the top,
left or right of the grinder housing .Its determined by your need.
• Adjusting the wheel guard
It’s offered to protect your hands to contact wheel.
Before adjusting, power supply shall be disconnected from tool!
• ON-OFF Switch To start:
1. To turn your angle grinder”ON”, push the on-off switch forward.
2. To turn the tool”OFF”,release the on-off switch,which is spring-loaded,and it will
return to the “0” position automatically.
For continuous operation:
3. Push the on-off switch forward to the ON position and press the front of the button
down until the switch clicks into position.
4. To unlock the switch and turn the tool OFF, press the rear of the button.
• Installing and removing the grinding wheel disc To remove:
1 Press the spindle lock button.
2 Loosen the spindle lock nut by turning the nut counterclockwise with the wrench.
3 Remove the threaded outer flange.
4 Remove the grinding wheel from the spindle.
1. ON-OFF switch
2. Lock button
3. Side handle
4. Operating handle
5. Gear housing
6. Wheel guard

DISC ASSEMBLY
8
1 Make sure the guard is securely in place.
2 Place the inner flange on the spindle.Ensure it is aligned on the two flats.
3 Check the rated speed on the grinding wheel. Do not use a wheel with a rated speed
lower than the speed shown on the tool nameplate.
4 Fit the wheel onto the spindle over the inner flange.
5 Press the spindle lock button to prevent movement of the spindle.
6 Keep the lock button pressed in, tighten the threaded outer flange by turning
clockwise with the lock nut wrench.
GRINDING OPERATION
1. Grip the grinder securely with two hands so you have full control at all times. The
starting torque creates a sudden jerk.
2. After starting the tool, apply the grinding wheel to the workpiece.
Note: Do not turn the switch ON or OFF while the grinder is in contact with the workpie-
ce. It will decrease switch life and could cause damage to the workpiece.
3. Tilt the grinder at a 15° to 30° angle for easy handing and faster grinding.
4. Apply the grinding wheel to the work surface with a light, steady pressure for maxi-
mum grinding efficiency. It should never be necessary to force the tool. The weight of
the tool applies adequate pressure.
5. The grinding wheels are for moderate metal removal on flat or contoured surface. Do
not put excessive pressure on the grinding wheel. Excessive or sudden pressure will
overload the motor, slow the grinding action, put dangerous stress on the wheel and
cause breakage.
6. When using a new grinding wheel, do not move the wheel in a forward direction (A)
on the workpiece. This will cause the edge of the wheel to cut into the work surface.
Move the grinder toward you (B) while grinding. After the grinding wheel edge has been
rounded by use, the grinder can be used in both directions.
NOTE: The continued use of a worn-out wheel may result in wheel explosion and
serious injury.
Disc assembly showing flange requirementns
Depressed disc ( thicker than 4mm )
Raised inner
part facing the
disc
Raised inner
part away from
the disc
Depressed disc (4mm or less in thickness )

MAINTENANCE
9
WARNING!
Before cleaning or performing any maintenance, power supply shall be discon-
nected from tool.
If the supply cord is damaged, it must be replaced by a specially prepared cord
available through the service organization.
Carbon brushes
The brush and commutator of the tool shall be examined for several months. Their good
contact makes the tool energetically. When the spark around the commutator become
greater the carbon brushes should be changed.
Cleaning
Before cleaning or performing any maintenance, power supply shall be discon-
nected from tool. Compressed dry air blow may be the most effective cleaning method.
Always wear safety goggles when cleaning tools with compressed air.
Ventilation openings and switch levers must be kept clean. Do not attempt to clean by
inserting pointed objects through openings.
No chemical agent is allowed to be used in cleaning the power tool.
Protecting the environment
Meaning of crossed –out wheeled dustbin: Do not dispose of electrical appliances as
unsorted municipal waste, use separate collection facilities. Contact you local govern-
ment for information regarding the collection systems available. If electrical appliances
are disposed of in landfills or dumps, hazardous substances can leak into the
groundwater and get into the food chain, damaging your health and well-being. When
replacing old appliances with new ones, the retailer is legally obligated to take back your
old appliance for disposals at least free of charge.
ACCESSORIES
• Flange 1+1 pc
• Flange wrench 1pc
• Side handle 1pc
*Depressed disc 6mm - 1/4”
*Cutting disc 3mm - 1/8”

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PARTS LIST
N°
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
N°
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
Wood ruff-key
Rubber bearing shoe
Pinio gear
Fan gaide
Bearing
Handle (F)
Armature
Check ring Nut
Stator
Washer
spring washer
Spring washer
Shield cover
Switch cover
Brush holder
Back cap
Cord clamp
Housing
Roller
Spring washer
Gearwheel
Bearing
Bearing
Bearing
Stop pin
Spring
Gear box
Screw
Screw
Screw
Screw
Switch
Switch draw-bar
Switch buton
Label
Condenser
Brush
Spring
Spring
Spindle
Flange
Cord plug
Cord jacket
Grind wheel
Flange nut
Screw
Screw
Shield
Screw
Screw
Screw
Bearing cap
Front cap
Check ring
Parte Parte

EXPLODED VIEW
SAVE THESE INSTRUCTIONS FOR REFERENCE
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