Alpha Tool.Com.HK Limited Grinder ECG125 User Manual
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![Page 30
30
FAN BELT REMOVAL AND REPLACEMENT
The Ecogrinder incorporates two drive fan belts (an inner and an outer)\
to power the fan
assembly. If the unit is not removing the dust, you will need to inspect the fa\
n belts, fan
assembly, and dust bag to find the cause of the problem.
NOTE: This Ecogrinder makes use of a flat fan belt and pulley system that is self-centering
due to the barrel shape of the pulleys. If the fan belt is worn or dirty it can rotate\
off
the pulleys, this will be...](http://img.usermanuals.tech/thumb/326/5192/w64_grinder-ecg125-user-manual-1478735221_d-29.png "Page 30
30
FAN BELT REMOVAL AND REPLACEMENT
The Ecogrinder incorporates two drive fan belts (an inner and an outer)\
to power the fan
assembly. If the unit is not removing the dust, you will need to inspect the fa\
n belts, fan
assembly, and dust bag to find the cause of the problem.
NOTE: This Ecogrinder makes use of a flat fan belt and pulley system that is self-centering
due to the barrel shape of the pulleys. If the fan belt is worn or dirty it can rotate\
off
the pulleys, this will be...")
![Page 32
32
INSPECTING AND CLEANING THE FAN BELTS AND PULLEYS
1. With the fan belt removed, you can now check and clean it using a mild de\
tergent.
The fan belt will need to be replaced if it is frayed or showing signs o\
f wear.
2. The pulley should also be cleaned with a mild detergent.
3. Rotate the pulley by hand to check for bearing play and wear.
4. Make sure to fully clean the inside area of the large pulley where the pulley meets the
spindle to prevent slippage.
REINSTALLING THE INNER FAN...](http://img.usermanuals.tech/thumb/326/5192/w64_grinder-ecg125-user-manual-1478735221_d-31.png "Page 32
32
INSPECTING AND CLEANING THE FAN BELTS AND PULLEYS
1. With the fan belt removed, you can now check and clean it using a mild de\
tergent.
The fan belt will need to be replaced if it is frayed or showing signs o\
f wear.
2. The pulley should also be cleaned with a mild detergent.
3. Rotate the pulley by hand to check for bearing play and wear.
4. Make sure to fully clean the inside area of the large pulley where the pulley meets the
spindle to prevent slippage.
REINSTALLING THE INNER FAN...")
![Page 33
33
REMOVAL OF THE OUTER FAN BELT
1. Remove the knob bolt and outer cover to gain access to the fan belt.
2. With the outer cover removed, grab the fan belt with your thumb and index finger and
rotate while pulling upward. It could take two or three turns to remove\
the fan belt.
3. With the fan belt removed you can now check and clean it using a mild det\
ergent. The
fan belt will need to be replaced if it is frayed or showing signs of we\
ar.
4. The pulleys should also be cleaned...](http://img.usermanuals.tech/thumb/326/5192/w64_grinder-ecg125-user-manual-1478735221_d-32.png "Page 33
33
REMOVAL OF THE OUTER FAN BELT
1. Remove the knob bolt and outer cover to gain access to the fan belt.
2. With the outer cover removed, grab the fan belt with your thumb and index finger and
rotate while pulling upward. It could take two or three turns to remove\
the fan belt.
3. With the fan belt removed you can now check and clean it using a mild det\
ergent. The
fan belt will need to be replaced if it is frayed or showing signs of we\
ar.
4. The pulleys should also be cleaned...")
![Page 34
34
REINSTALLING THE OUTER FAN BELT
1. To reinstall the outer fan belt you need to put the belt onto one pulley \
and guide it over
the other pulley with your finger while turning the fan belt.
2. Once the fan belt is on both pulleys, keep turning and the belt should c\
enter itself.
3. Reinstall the outer cover and tighten the knob screw.
4. With both fan belts installed and the covers in place, the unit can be ch\
ecked.
5. With the spindle facing the workbench, start the motor and check the...](http://img.usermanuals.tech/thumb/326/5192/w64_grinder-ecg125-user-manual-1478735221_d-33.png "Page 34
34
REINSTALLING THE OUTER FAN BELT
1. To reinstall the outer fan belt you need to put the belt onto one pulley \
and guide it over
the other pulley with your finger while turning the fan belt.
2. Once the fan belt is on both pulleys, keep turning and the belt should c\
enter itself.
3. Reinstall the outer cover and tighten the knob screw.
4. With both fan belts installed and the covers in place, the unit can be ch\
ecked.
5. With the spindle facing the workbench, start the motor and check the...")
31 INNER FAN BELT REMOVAL DANGER! Be sure to unplug the power cord from the outlet before assembling or disassembling the tool. Accidental starting of the motor may cause bodily injury. 1. Remove the grinding wheel and flange assembly (See section for grinding wheel and flange installation and removal) 2. Remove the Phillips screw used to secure the inner fan belt cover. Remove the inner fan belt cover to expose the inner fan belts and pulleys. 3. Remove the inner fan belt by grabbing it with your thumb and index finger and pulling it up while rotating. It could take two or three turns to remove the fa\ n belt. Figure-35 Figure-36 Inner Belt Cover Phillips Screw Inner Fan Belt Cover Fan Belt Removal
32 INSPECTING AND CLEANING THE FAN BELTS AND PULLEYS 1. With the fan belt removed, you can now check and clean it using a mild de\ tergent. The fan belt will need to be replaced if it is frayed or showing signs o\ f wear. 2. The pulley should also be cleaned with a mild detergent. 3. Rotate the pulley by hand to check for bearing play and wear. 4. Make sure to fully clean the inside area of the large pulley where the pulley meets the spindle to prevent slippage. REINSTALLING THE INNER FAN BELT 1. Reinstall the bottom pulley with the recess facing the spindle and housing (see figure 38). Press the spindle lock button (see figure 25) while installing the flange nut and lock in place. 2. Place the fan belt around the top of the large pulley, guide the other side of the belt against the small pulley with your index finger while turning the flange nut. After two or three turns the fan belt should center itself. 3. Reinstall the inner fan belt cover and flat head screw. Figure-37 Figure-38 Cleaning fan belt and pulleys Clean the dust and buildup in this recessed area before reinstalling. Inner fan belt Installation
33 REMOVAL OF THE OUTER FAN BELT 1. Remove the knob bolt and outer cover to gain access to the fan belt. 2. With the outer cover removed, grab the fan belt with your thumb and index finger and rotate while pulling upward. It could take two or three turns to remove\ the fan belt. 3. With the fan belt removed you can now check and clean it using a mild det\ ergent. The fan belt will need to be replaced if it is frayed or showing signs of we\ ar. 4. The pulleys should also be cleaned with a mild detergent. 5. Rotate the pulley by hand to check for bearing play and wear. Figure-39 Knob Bolt Outer Fan Belt Cover Outer Fan Belt Cover Figure-40 Outer Fan Belt Removal
34 REINSTALLING THE OUTER FAN BELT 1. To reinstall the outer fan belt you need to put the belt onto one pulley \ and guide it over the other pulley with your finger while turning the fan belt. 2. Once the fan belt is on both pulleys, keep turning and the belt should c\ enter itself. 3. Reinstall the outer cover and tighten the knob screw. 4. With both fan belts installed and the covers in place, the unit can be ch\ ecked. 5. With the spindle facing the workbench, start the motor and check the fan \ output bag as it should fully inflate in a few seconds. 6. After testing, be sure to unplug the power cord, before reinstalling the\ grinding wheel. Figure-41 Outer Fan Belt Installation
35 ALPHA® ECOGRINDER MOTOR SCHEMATIC (ECG-125) 19 116 10/18/2010
36 ALPHA® ECOGRINDER ATTACHMENT SCHEMATIC 105 10/18/2010
37 ALPHA® ECOGRINDER PARTS LIST (ECG-125) DRAWING NO. PART NO.DESCRIPTIONQUANTITY 1801373/801374Breaker Assembly (w/case) 110V/220V1 2801324/801350Power Cord 110V/220V1 3801359Screw M8 x 154 4801360Lock Washer M84 5801355Handle Bracket -Left1 6801358Handle Cover1 8801356Handle Bracket -Right1 9801357Handle Tube1 10133028Bearing Sleeve1 11133025Bearing 608-2RZ1 12133024Insulation Disc1 13801321/801014Armature Assembly 110V/220V1 15133050Woodruff Key1 16801022Armature Retainer Plate1 17133053Bearing 6201-2RS2 18801064Gear (small)1 19801384/801635Soft Starter Assembly 110V/220V1 20133047Cable Sleeve1 21130031Self-Tapping Screw 3.9 x 196 22133086Cable Clamp1 23801116Handle-Right1 24801038Switch w/ screws1 25801003Motor Housing1 26801030Carbon Brush Spring2 28801594Carbon Brush (2 pc set)2 29801318/801004Field Coil 110V/220V1 30801029Carbon Brush Holder2 31801080Self-Tapping Screw 1.9 x 52 32801117Handle-Left1 33801033Wire (Coil to CB holder)2 34801362Alpha® Name Plate2 35801361Builders Plate 110V1 36801032Wire (Coil to Switch)1 02/05/2013
38 DRAWING NO. PART NO.DESCRIPTIONQUANTITY 37801034Insulation Pipe 4mm x 55mm (white)1 38801311Insulation Pipe 5mm x 55mm (white)1 39801026Self-Tapping Screw 4.8 x 632 40801024Air Bridge1 41133530Anti-Back-Flow Flap1 42133531Dust Gate1 43133533Dust Hose1 44133532Dust Bag Holder1 45133544Dust Bag w/strap 17”x13-1/2”x12”1 46130391O-Ring 16 x 21 47801076Locking Pin1 48130389Spring1 49130395Bushing1 50801071Gear Housing1 52130096Bearing HK 08101 53801079Self-Tapping Screw 4.8 x 224 54801058Gear (Big)1 55801061Washer1 56801067Snap Ring1 57801063Bearing Cover2 58801056Felt Ring 20 x 27 x 1.51 59801074Gasket1 61801054Bearing Housing1 62801326Spindle1 63801330Spacer Sleeves4 64801342Knob Nut1 65801328Main Casing1 66801344Main Casing (w/ brush)1 67801343Brush Ring-Long (press fit installed by service center ) 1 68801322Screw M4 x 324 69130798Retainer Ring-E1 70801352Slide Cover1 ALPHA® ECOGRINDER PARTS LIST (ECG-125) 02/05/2013
39 DRAWING NO. PART NO.DESCRIPTIONQUANTITY 72801365Brush Ring–Short (press fit installed by service center)1 71801345Slide Cover (w/ brush)1 73801341Screw M5 x 351 74801340Retainer Clip1 75135251Screw M4 x 61 76801337Bottom Pulley1 77801602Fan Belt Set (2 pc set)2 78801351Inner Cover1 79133515Screw M5 x 30 ( Use Part # 133513)1 80801347Adjust Nut1 81801348Lock Nut1 82801346Adjust Screw1 83801349Flange Nut1 84801336Pulley (Outside Small)1 85133502Felt Rings D19xD12xT23 86133492Bearing 698 2-RS4 87133500Bearing Housing1 88133498Spacer D12xD8.5x4T1 89133505Cap Screw M5 x 106 90133497Fan Case -Right1 91133067O-Ring 25.5 x 22 92133460Self-Tapping Screw 3.9 x 166 93133493Fan Case -Left1 94801334Fan1 95801335Fan Shaft1 96133511Knob Bolt1 97133510Outer Cover1 98801332Pulley (Outside Large)1 99801331Pulley Shaft1 100133512Screw M5 x 153 102133486Housing Adapter1 103801333Pulley (Inside Small)1 ALPHA® ECOGRINDER PARTS LIST (ECG-125) 02/05/2013
40 DRAWING NO.PART NO.DESCRIPTIONQUANTITY DRAWING NO. PART NO.DESCRIPTIONQUANTITY 104130434Pin Spanner Wrench 34 mm1 105801380Wrench 24mm1 108801375Spring Retainer -Top1 109801376Flange Nut1 110801377Spring1 111801378Spring Retainer -Bottom1 112801381Drive Plate Adapter1 113801379Flange Bolt1 114801382Flat Head Screw M4x63 115801385Wire (Field Coil to Block Terminal)1 116130618Block Terminal1 117DSQ0500Segmented Grinding Cup Wheel w/ 26mm Arbor1 118DEC005*Segmented Grinding Cup Wheel w/ 7/8”Arbor1 119890001*Manual Height Adjustment Flange Assembly (80-83)1 120133615Felt Rings D26.6xD12.5xT21 Not Shown801392Dust Bag for Carriage 16x13-1/2x81 121801629Inner Cover Gasket1 122801630Dust Shield D60xD42xT0.351 ALPHA® ECOGRINDER PARTS LIST (ECG-125) *Part # DEC005 is not included, sold separately.*Part # 890001 is not included, sold separately. 02/05/2013