AGP HS225 User manual

Original instructions
For your personal safety, READ and UNDERSTAND before using.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.
Version:20121118

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Bayonet Adaptor End
Sanding plate &
Sponge pad
Dust collection hose
Spindle lock
Sanding plate cover
Trigger Switch
Bail handle
Switch lock
Speed wheel
Vacuum Swivel Mount
(Vacuum cleaner
hose not included)
Half-moon door
Voltage See machine nameplate
Power input 1200W
No load min-1 650 ~ 1300
Sanding disc diameter 225mm
Net weight 3.0Kg

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GENERAL SAFETY INSTRUCTIONS
WARNING! Read all safety warnings and all instructions. Failure to follow the warnings
and instructions may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference. The term “power tool” in the warnings
refers to your mainsoperated (corded) power tool or battery-operated (cordless) power tool.
1) WORK AREA SAFETY
a) Keep work area clean and well lit. Cluttered or dark areas invite accidents.
b) Do not operate power tools in explosive atmospheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
c) Keep children and bystanders away while operating a power tool. Distractions can cause
you to lose control.
2) ELECTRICAL SAFETY
a) Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any
adapter plugs with earthed (grounded) power tools.
Unmodified plugs and matching outlets will reduce risk of electric shock.
b) Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
c) Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of electric shock.
d) Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power
tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled
cords increase the risk of electric shock.
e) When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use
of a cord suitable for outdoor use reduces the risk of electric shock.
f) If operating a power tool in a damp location is unavoidable, use an earth leakage circuit
breaker. Use of an earth leakage circuit breaker reduces the risk of electric shock.
3) PERSONAL SAFETY
a) Stay alert, watch what you are doing and use common sense when operating a power tool.
Do not use a power tool while you are tired or under the influence of drugs, alcohol or
medication. A moment of inattention while operating power tools may result in serious personal
injury.
b) Use personal protective equipment. Always wear eye protection. Protective equipment such
as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate

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conditions will reduce personal injuries.
c) Prevent unintentional starting. Ensure the switch is in the off-position before connecting to
power source and/or battery pack, picking up or carrying the tool. Carrying power tools with
your finger on the switch or energising power tools that have the switch on invites accidents.
d) Remove any adjusting key or wrench before turning the power tool on. A wrench or a key
left attached to a rotating part of the power tool may result in personal injury.
e) Do not overreach. Keep proper footing and balance at all times. This enables better control
of the power tool in unexpected situations.
f) Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and gloves
away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.
g) If devices are provided for the connection of dust extraction and collection facilities, ensure
these are connected and properly used. Use of dust collection can reduce dust-related
hazards.
4) POWER TOOL USE AND CARE
a) Do not force the power tool. Use the correct power tool for your application. The correct
power tool will do the job better and safer at the rate for which it was designed.
b) Do not use the power tool if the switch does not turn it on and off. Any power tool that
cannot be controlled with the switch is dangerous and must be repaired.
c) Disconnect the plug from the power source and/or the battery pack from the power tool
before making any adjustments, changing accessories, or storing power tools. Such preventive
safety measures reduce the risk of starting the power tool accidentally.
d) Store idle power tools out of the reach of children and do not allow persons unfamiliar with
the power tool or these instructions to operate the power tool. Power tools are dangerous in the
hands of untrained users.
e) Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts
and any other condition that may affect the power tool’s operation. If damaged, have the
power tool repaired before use. Many accidents are caused by poorly maintained power
tools.
f) Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting
edges are less likely to bind and are easier to control.
g) Use the power tool, accessories and tool bits etc., in accordance with these instructions,
taking into account the working conditions and the work to be performed. Use of the power
tool for operations different from those intended could result in a hazardous situation.
5) SERVICE
a) Have your power tool serviced by a qualified repair person using only identical replacement
parts. This will ensure that the safety of the power tool is maintained.

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Symbols used in this manual
V……..volts
A……..amperes
Hz……hertz
W……..watt
~………alternating current
n0………no load speed
min-1……..revolutions or reciprocation per minute
………….class II tool
SPECIFIC SAFETY RULES
1. Keep hands away from rotating sanding head area at all times!
2. Prolonged breathing of airborne dust from drywall sanding may effect
respiratory function:
Always use a vacuum cleaner with a bag approved for drywall dust installed.
Always wear a respirator approved for dust and mist.
3. Sanding LEAD-BASED paint is extremely toxic and should not be attempted.
Only allow professionals with special training and equipment perform this task.
4. Maintain proper footing and balance at all times. Do not overreach. Use proper
scaffolding
5. Always wear appropriate safety equipment when operating.
6. Important: After completing sanding, switch off the switch and wait for the
coasting sanding head to stop completely before putting the tool down.
7. Never operate the tool in an area with flammable solids, liquids, or gases. Sparks
from the commutator/carbon brushes could cause a fire or explosion.
8. There are certain applications for which this tool was designed. The
manufacturer strongly recommends that this tool NOT be modified and/or used
for any application other than for which it was designed. If you have any
questions relative to its application DO NOT use the tool until you have written
the manufacturer and have been advised.
9. Use the machine with both hands at all times. Loss of control can cause
personal injury.
10. Keep power supply cord clear from the working range of the machine. Always
lead the cable away behind you.
11. Immediately switch off the machine if unusual vibrations or if other malfunctions
occur. Check the machine in order to find out the cause.
12. The dust that arises when working with this tool can be harmful to health. Use a
dust absorption system and wear a suitable dust protection mask and remove
deposited dust with a vacuum cleaner.

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Safety Warnings for Sanding Operations:
1. This power tool is intended to function as a sander. Read all safety warnings, instructions,
illustrations and specications provided with this power tool. Failure to follow all instructions
listed below may result in electric shock, re and/or serious injury.
2. Operations such as grinding, 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.
3. Do not use accessories which are not specically designed and recommended by the tool
manufacturer. Just because the accessory can be attached to your power tool, it does
not assure safe operation.
4. The rated speed of the accessory must be at least equal to the maximum speed
5. marked on the power tool. Accessories running faster than their rated speed can break
and y apart.
6. The outside diameter and the thickness of your accessory must be within the
7. capacity rating of your power tool. Incorrectly sized accessories cannot be adequately
guarded or controlled.
8. The arbor 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 excessively and may
cause loss of control.
9. Do not use a damaged accessory. Before each use inspect the accessory such as
backing pad for cracks, tears or excess wear, If power tool or accessory is dropped,
inspect for damage or install an undamaged accessory. After inspecting and installing an
accessory, 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 accessories
will normally break apart during this test time.
10. 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 ying debris generated by various operations. The
dust mask or respirator must be capable of ltrating particles generated by your operation.
Prolonged exposure to high intensity noise may cause hearing loss.
11. 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 y away and cause injury beyond immediate area of operation.
12. 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.
13. 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.
14. 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.
15. 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.

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16. Do not operate the power tool near flammable materials. Sparks could ignite these
materials.
17. Do not use accessories that require liquid coolants. Using water or other liquid coolants
may result in electrocution or shock.
Further safety instructions for all operations
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.
1. Maintain a rm 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.
2. Never place your hand near the rotating accessory. Accessory may kickback over your
hand.
3. 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.
4. 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.
5. Do not attach a saw chain woodcarving blade or toothed saw blade. Such blades create
frequent kickback and loss of control.
Safety Warnings Specic for Sanding Operations
Do not use excessively oversized sanding disc paper. Follow manufacturers recommendations,
when selecting sanding paper. Larger sanding paper extending beyond the sanding pad
presents a laceration hazard and may cause snagging, tearing of the disc or kickback.

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FUNCTIONAL DESCRIPTION
This Electric Drywall Sander is specially designed for the most efficient sanding of
drywall or plaster walls and ceilings for both new construction and renovation work.
It is designed to work in conjunction with a vacuum cleaner for minimum dust and
best sanding results.
Electrical connection
The network voltage must conform to the voltage indicated on the tool name
plate. Under no circumstances should the tool be used when the power supply
cable is damaged. A damaged cable must be replaced immediately by an
authorized Customer Service Center. Do not try to repair the damaged cable
yourself. The use of damaged power cables can lead to an electric shock.
Extension cable
If an extension cable is required, it must have a sufficient cross-section so as to
prevent an excessive drop in voltage or overheating. An excessive drop in voltage
reduces the output and can lead to failure of the motor. The following table shows
you the correct cable diameter as a function of the cable length for this machine.
Use only U.L. and CSA listed extension cables. Never use two extension cables
together. Instead, use one long one.
Total Extension Cord Length (feet) Cord Size (AWG)
25 16
50 12
100 10
150 8
200 6

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UNPACKING
Carefully remove the tool and all loose items from the shipping container.
Retain all packing materials until after you have inspected and satisfactorily
operated the machine.
CARTON CONTENTS
1. Drywall Sanding Machine
2. Bayonet Adaptor End (for vacuum cleaner hose)
3. Instruction manual
DO NOT OPERATE THIS TOOL UNTIL YOU READ AND UNDERSTAND THE ENTIRE
INSTRUCTION MANUAL
To install a sandpaper disc:
1. Unplug the machine.
2. Peel away the worn out sandpaper disc, leaving the sponge backing pad in
place.
3. Carefully center the new sandpaper disc and press into place. It will be held
securely by the hook and loop backing.
● To replace the Hook and Loop Sponge Pad:
The sponge pad must be perfectly flat to get good sanding results. If it is deformed
or damaged it will cause very uneven sanding. Always replace it when damaged.
It is hook and loop on both sides, so to Replace it, peel it away from the hook and
loop on the Sanding Plate Base and, taking great care to keep it perfectly
centered, affix a new one

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The Brush Bristles on the edge of the Sanding Plate Cover:
The brush bristles on the edge of the Sanding Plate Cover help the efficiency of the
dust collection by the vacuum cleaner. These brush bristles will wear with continued
use.
The Sanding Plate Cover should be replaced when the bristles are too worn to
ensure effective dust collection and stabilization of the sanding head.
To replace the cover, follow these steps:
Ensure that the machine is unplugged. Press the spindle lock
and rotate the sanding plate until the lock engages. Then
Rotate the sanding plate counterclockwise to remove.
Then, press the cover down against the spring and, using
snap-ring pliers, remove the circlip which holds the sanding
plate cover to the gearbox.
Finally, carefully work the vacuum hose free then lift sanding
plate cover away.
Replacement is the opposite of removal. Don’t forget the
spring. Entrust all repairs to an authorized service center.
Spindle lock

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To install the vacuum cleaner hose:
1. First remove the standard end from your vacuum
cleaner hose (not included) then thread on the
Bayonet Adaptor End (provided) to your existing
vacuum cleaner hose.
2. Plug the Bayonet Adaptor into the swivel mount
in the back of the machine. Once the tangs of
the bayonet mount are fully inserted in the slots,
hold the swivel mount from turning and turn the
hose bayonet mount clockwise to lock.
3. Removal is the opposite of assembly.
The vacuum cleaner:
Ensure that you have a bag installed in your vacuum cleaner which is approved
and rated for drywall dust.
WARNING: Failure to use an approved dust bag in your vacuum will increase the
level of airborne dust in the work area. Prolonged exposure to such dust may cause
respiratory harm.
STARTING AND STOPPING TOOL
Make sure that the power circuit voltage is the same as that shown on the
specification plate of the machine and that switch is “OFF” before connecting the
tool to the power circuit.
Switching the machine on and off
Squeeze the trigger switch to start the tool. Release to stop. If continuous operation
is required, the switch may be locked on. To release the lock, first squeeze the
trigger, then release. After the machine has been switched off, the sanding disc will
still rotate for a time. Take care that parts of your
body do not come into contact with the disc and do
not set the machine down while it is still rotating!
Anticipate and be ready for the start up torque
when the machine first starts.
Trigger Switch
Switch lock

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Adjusting the rotation speed:
The speed of the machine is variable to suit different
tasks. It can be adjusted from 650/min up to 1300/
min by using the thumb wheel. Using the right
thumb, turn to the right to increase the speed and to
the left to decrease the speed.
Generally, you should use the higher speed for fast
stock removal and the lower speed for more precise
control.
HOW TO USE THE TOOL
Effective control of this powerful saw requires two-handed operation for maximum
safety and control.
It is vitally important to keep stable footing at all times, especially when standing on
scaffolding or stilts.
Speed Adjustment
The Half-Moon Door
The sanding plate cover is equipped with a
removable half-moon door. This is to allow the
operator to sand right up to the edge or into a
corner.
Dust collection will not be ideal while the half-moon
door is removed, so the door should only be
removed when necessary and then replaced
immediately.
To remove, first shut down the machine and unplug
the power supply cable.
Then press the 2 tangs which retain the half-moon
door just enough to release it and lift the door
away. Put the door in a safe place where it will not
be lost or damaged when it is time to replace it.
To replace, line up the locating pins in the sanding
plate cover and snap the tangs in place.

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MAINTENANCE
KEEP TOOL CLEAN
Periodically blow out all air passages with dry compressed air. All plastic parts should
be cleaned with a soft damp cloth. NEVER use solvents to clean plastic parts. They
could possibly dissolve or otherwise damage the material.
Wear safety glasses while using compressed air.
Clean the vacuum swivel connector as too much dust will keep it from turning
freely.
THE CARBON BRUSHES
The carbon brushes are a normal wearing part and must be replaced when they
reach their wear limit.
NOTE: Checking and replacing the carbon brushes should be entrusted to a
qualified service center.
SANDING OPERATIONS
Once the machine and vacuum cleaner are set up and all safety measures and
equipment are in place, begin by turning on the vacuum cleaner and then the
machine. (If you are using a vacuum cleaner with integrated switching, then
simply turn the machine on.)
Begin sanding and carefully contact the work surface as lightly as possible-just
enough to keep the sanding head flat against the surface.
The best technique is to use overlapping sweeps and keep the head in constant
motion. Never stop too long in any one place or there will be swirl marks. With
experience it will be very easy to create excellent results.
1
2
3
NOTE: Ensure that the sandpaper you are using is suited to the task. Overly coarse
grit paper may remove material too quickly to control. While overly fine grit paper
may clog too often and not shape down the surface.
CAUTION: Take care to avoid pointed projections and nails, etc. This will wipe out
the sandpaper and probably damage the sponge pad as well.

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Replacing is the reverse of removal. Replace the brushes in the holders then put the
holders in place in the housing and secure the screws. When Replacing the handle
cover halves take great care that all wires are in place and not in a position to be
pinched when it is retightened. It is recommended that, at least once a year, you
take the tool to an Authorized Service Center for a thorough cleaning and
lubrication.
If the replacement of the power supply cord is necessary, this has to be done by
the manufacturer or their agent in order to avoid a safety hazard.
NOTE: To reinstall the same brushes, first make sure the brushes go back in the way
they came out. Otherwise a break-in period will occur that will reduce motor
performance and increase brush wear.
NOTE: When putting the Carbon Brushes back into the Carbon Brush Holders it is
essential that both flanges go back inside the holder.
The carbon brushes furnished will last approximately 50 hours of running time or
10,000 on/off cycles. Replace both carbon brushes when either has less than 1/4"
length of carbon remaining. To inspect or replace brushes, first unplug the machine.
Remove the hose clamp, then the right and left handle halves. Remove the 2
screws to remove the electronics unit and carefully hold it off to the side. Avoid
straining any of the wires. Remove each brush holder screw and brush holder in turn.

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WIRING
MOTOR
CARBON
BRUSH
BLACK
CARBON
BRUSH
BLACK
4
3
2
6
5
1
SWITCH
BLUE
BROWN
ELECTRONICS UNIT
RED
AC

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EXPLODED VIEW
04
03
02
NO.01~69 V1.6
52
53
54
54
55
62
63
59
61
51
07
08
09
07
04
04
06
60
25
24
26
27
28
29
11
10
16 17
19 20
21
22
23
56
58
64
30
32
33
36
34
35
37
31
38
12
05
49
50
65
01
18
45
43
44
41
42
40
39
46
47
48
67
68
57
13
69
15
14
13
69
15
14

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PARTS LIST
NO. Parts Name Q'TY
1 POWER SUPPLY CABLE 1
2 CORD ARMOR 1
3 CABLE CLIP 1
4 SCREW M4 x 14 6
5 WIRE LEAD 20#9L+5 +110 1
6 SWITCH 1
7 SCREW M4 x 25 4
8 RIGHT HANDLE COVER 1
9 LEFT HANDLE COVER 1
10 SCREW M4 x 20 2
11 ELECTRONICS UNIT (110V) 1
11 ELECTRONICS UNIT (220V) 1
12 THUMB WHEEL 1
13 BRUSH SCREW M4 x 10 4
14 CARBON BRUSH 7 x 11 x 17 +33L+FLDNBI-110 2
15 CARBON BRUSH HOLDER 2
16 SCREW M4 x 10 1
17 FLAT WASHER Ø4 x Ø10 x 1 1
18 PLASTIC WASHER Ø4 x Ø11 x 1 1
19 PICKUP MAGNET Ø8 x Ø15 x 5 1
20 SPACER Ø8 x Ø12 x 10.5 1
21 MOTOR HOUSING 1
22 STATOR 1
22 STATOR 1
23 STATOR SCREW M4 x 60 2
24 BALL BEARING 608-2RU 1
25 ARMATURE M1.0 x 6T 1
25 ARMATURE M1.0 x 6T 1
26 BALL BEARING 6000-2RS 1
27 GEAR CASE 1
28 SPINDLE LOCK BUTTON 1
29 SPRING Ø0.9 x Ø10 x Ø11.8 x 13.5L x 4T 1
30 SPINDLE LOCK 1
31 SCREW M4 x 30 4
32 NEEDLE BEARING HK0608 1
33 BEVEL GEAR M1.0 x 46T 1
NO. Parts Name Q'TY
34 PARALLEL KEY 4 x 4 x 8 1
35 INPUT GEAR SHAFT 9T 1
36 BALL BEARING 6001 zz 1
37 GEAR PLATE 1
38 SCREW M4 x 16 4
39 BUSHING Ø8 x Ø12 x 6 1
40 SPINDLE GEAR 22T 1
41 EXTERNAL CIRCLIP S-12 1
42 BALL BEARING 6001-2RSH 1
43 PARALLEL KEY 3 x 3 x 8 1
44 SPINDLE 1
45 GEAR COVER 1
46 SCREW M4 x 25 4
47 INTERNAL CIRCLIP R-28 1
48 SPRING Ø2 x Ø45x Ø49 x 40L x 4T 1
49 SANDING PLATE COVER 1
50 HALF-MOON DOOR 1
51 EXTERNAL CIRCLIP S-40 1
52 SANDING PLATE BASE 1
53 HOOK & LOOP SPONGE PAD 1
54 SOCKET CAP SCREW M8 x 16 2
55 BAIL HANDLE 1
56 PLASTIC HOSE CLIP 1
57 SPRING Ø1 x Ø30 x Ø32 x 403L x 200T 1
58 VACCUM HOSE 1
59 CLAMP PIECE-RIGHT 1
60 CLAMP PIECE-LEFT 1
61 THUMB SCREW M5 x 16 1
62 HOSE BRACKET-LOWER 1
63 HOSE BRACKET-UPPER 1
64 BAYONET SWIVEL CONNECTOR 1
65 VACUUM HOSE SWIVEL CONNECTOR 1
66 N/A -
67 RADIAL SHAFT SEAL Ø17 x Ø28 x 5 1
68 ZIP TIE 2.4 x 80mm 2
69 SPIRAL TORSION SPRING 2



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