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Operation
ToughTek
Continuous Mixers
Electric continuous mixer for water-based cementitous materials. For professional use only.
Not approved for use in explosive atmospheres or hazardous locations.
100 psi (0.69 MPa, 6.9 bar) Maximum Water Inlet Pressure
See page 2 for model information and approvals.
Important Safety Instructions
Read all warnings and instructions in this
manual. Save these instructions.
®
CM20
3A5202F
EN
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Summary of Contents for Graco ToughTek CM20
- Page 1 Operation ® ToughTek CM20 3A5202F Continuous Mixers Electric continuous mixer for water-based cementitous materials. For professional use only. Not approved for use in explosive atmospheres or hazardous locations. 100 psi (0.69 MPa, 6.9 bar) Maximum Water Inlet Pressure See page 2 for model information and approvals. Important Safety Instructions Read all warnings and instructions in this manual.
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Page 2: Table Of Contents
Changing Material and Storing Equipment ..14 Graco Standard Warranty ....32 Remove Mixer from Cart Stand ... . 15 Maintenance . -
Page 3: Warnings
Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable. - Page 4 Warnings WARNING EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury. • Do not operate the unit when fatigued or under the influence of drugs or alcohol. • Do not exceed the maximum working pressure or temperature rating of the lowest rated system com- ponent.
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Page 5: Component Identification
Component Identification Component Identification CM20 25M563 (230V) Ref. Description Ref. Description Water control assembly Hopper (see detail view for components) Cart stand Electrical Box 2 Frame safety pins On/Off switch Rear toggle latch Circuit breaker reset BBA Rear toggle latch clip Mix-head assembly (see detail view for com- Motor assembly ponents) -
Page 6: Mix-Head Assembly
Component Identification Mix-head Assembly Ref. Description Mixing tube Mixing tube toggle latches Mixing shaft Mixing shaft pins Throat insert FCC Water dosing port Material dosing auger shaft Water Control Assembly ti31358a 230V Ref. Description Water accessory fitting Water accessory shut-off ball valve Water supply inlet DCC Inlet screen Water pressure regulator... -
Page 7: Setup
Setup Setup Assemble Unit 6. Lift the motor assembly (C) so that it connects to the material dosing auger shaft (FD). Immediately secure the motor to the hopper with the motor alignment pin (CA). Ensure the pin has slid completely into place. Slide motor alignment pin washer (CAB) over the end of the alignment pin During assembly, the cart could collapse and crush (CA). -
Page 8: Prepare Unit For Operation
Setup Prepare Unit for Operation 3. Verify that the motor (C) is securely mounted. The motor alignment pin (CA) must be installed and secured with a motor alignment pin washer (CAB) and motor alignment pin clip (CAA). During setup, the cart could collapse and crush fin- gers and other body parts. -
Page 9: Water Connections
Setup 6. Verify that the hopper grate (H) is installed with the Water Connections bag breaker pointing up. Ensure the hopper grate is secured with the grate retaining screw (HH). 1. Close the water accessory shut-off ball valve (DB). To help prevent injury from moving parts, do not operate with the grate (H) or mixing tube (FA) removed. -
Page 10: Electrical Components
Setup Electrical Components Grounding NOTE: Certain 120 V GFCI outlets have been known to trip while using this product. GFCI outlets have a range of sensitivities. Motor controllers can cause false trips of GFCI outlets. If you experience issues while using this The equipment must be grounded to reduce the risk product, switch to a different GFCI model. -
Page 11: Operation
Operation Operation 4. Adjust the water metering valve (DF) until the material is the correct consistency. To help prevent injury from moving parts, do not operate with the grate (H) or mixing tube (FA) removed. 1. Complete Setup, page 7. 2. -
Page 12: Shutdown
Operation Shutdown 6. Disconnect water supply. 7. Disconnect the motor power cable (CB). NOTICE Avoid contact with the discharge nozzle (FF), mix shaft To prevent damage to mix-head assembly, do not (FB), and material dosing auger shaft (FD) during shut allow material to cure in mix-head assembly. - Page 13 Operation 12. Reinstall the mixing tube assembly onto the throat NOTE: Hopper lid accessory (17T019) can be used to insert. Ensure the pins (FBB) on the mixing shaft keep excess material in hopper dry. (FB) line up with the slots in the material dosing shaft (FD).
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Page 14: Changing Material And Storing Equipment
Operation Changing Material and Storing 3. For storage and use in freezing temperatures: Drain the water. Remove twist-claw irrigation fitting Equipment (DG) and open water accessory ball-valve (DB). Carefully tilt the unit to allow water to drain from both ends of the water control assembly (D), which is separated by the closed water control solenoid (DE). -
Page 15: Remove Mixer From Cart Stand
Operation Remove Mixer from Cart Stand 7. If desired, fold the cart stand for storage convenience. 1. Follow the Shutdown procedure on page 12, then a. Remove frame pins (BA). perform the Changing Material and Storing Equipment procedure on page 14. b. -
Page 16: Maintenance
Maintenance Maintenance Preventive Maintenance Schedule Routine Inspection Frequency Ensure all protective clips, ring pins, latches, grating, fasteners, housings, and Before every use enclosures are installed and in good working order, functioning properly, and free of excessive wear, cracks, or corrosion. Ensure all electrical components, cabling, and motor are properly assembled so that they are sealed from water ingress, free of debris, and in good working order. -
Page 17: Troubleshooting
Troubleshooting Troubleshooting 1. Follow Shutdown, page 12, before checking or repairing mixer. Problem Cause Solution Poor mix quality Mixing shaft configuration can Reconfigure mixing shaft. Refer to Mixing significantly affect mix quality. Shaft Factory Configuration, page 21, for recommended configuration. Buildup of cured material. - Page 18 Incorrect solenoid installed. The solenoid must be “normally closed” type. Use only genuine Graco replacement parts. There is debris in the water control Verify the water inlet screen (DCC) is in assembly (D).
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Page 19: Schematics
Schematics Schematics 25M530 (120 Volt) Series B 25M530 (120 Volt) Series A 3A5202F... -
Page 20: 25M563 (230 Volt)
Schematics 25M563 (230 Volt) 3A5202F... -
Page 21: Mixing Shaft Factory Configuration
Schematics Mixing Shaft Factory Configuration The factory configuration of the mix shaft assembly works well for most common, pump-grade stucco materials. The configuration of the shaft can be changed if an alternate configuration is desired. For most materials, it is recommended to reduce starting torque by positioning the pointed ends of the mixing elements so that they are on the leading edge. -
Page 22: Parts
Parts Parts Mixer Assembly 25M530 25M530 Series B and 25M563 25M563 25M530 Series A 3A5202F... - Page 23 Parts 120V 230V 25M530 25M563 Ref. Part Description Qty. Series A Current Current 17T341 KIT, cart, foldable, mixer 17T331 KIT, clip, hitch 17T440 KIT, pin, ring 17T444 KIT, wheel, pneumatic 17T467 KIT, tube, inner 17T334 KIT, clip, hitch, low profile 17T513 FITTING, grease, m8x1 15G958 CORD SET, adaptor, Europe, 1.5 mm 17T442 KIT, gasket, hopper, motor...
- Page 24 Parts 120V 230V 25M530 25M563 Ref. Part Description Qty. Series A Current Current 17T333 KIT, pin, motor, alignment 33▲ 17M606 LABEL, warning, entanglement 17T332 KIT, bracket, motor mount 17T445 KIT, seal, motor coupler 17T600 KIT, flange, ring, adaptor 17T515 KIT, coupler, motor vfd 17T516 KIT, motor, gear, vfd, mounted ----- KIT, set, screw, m8 x 1.25 x 10 mm...
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Page 25: Mixing Shaft Assembly (17T457)
Parts Mixing Shaft Assembly (17T457) 120V 230V 25M530 25M563 Ref. Part Description Qty. Series A Current Current 17T460 KIT, shaft, mix, bare 201a 17T464 KIT, pin, roll, 10 mm x 45 mm long 201b 17T465 KIT, pin, roll, 6 mm x 45 mm long 17T461 KIT, element, mix wing, inlet 17T466 KIT, element, mixing wing 17T463 KIT, element, mix wing, outlet... -
Page 26: Water Control Assembly
Parts Water Control Assembly 17T350 (120 V), 17T506 (230 V) 25M563 25M563 120V 230V 25M530 25M563 Ref. Part Description Qty. Series A Current Current 17T355 KIT, fitting, gh, male 17T451 KIT, valve, ball 125408 FITTING, nipple 101846 FITTING, tee, 1/2 pipe 17T354 KIT, fitting, gh, female, swivel 17T426 KIT, screen, filter, gh 17T337 KIT, bracket, wc assembly, right... - Page 27 Parts 120V 230V 25M530 25M563 Ref. Part Description Qty. Series A Current Current 320b 17T438 KIT, gasket, Geka 320c 17T329 KIT, fitting, barb, male 320d 17T328 KIT, fitting, barb, female 17T356 KIT, screen, filter, Geka 17T336 KIT, bracket, wc assembly, left 3A5202F...
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Page 28: 120 V Control Box Assembly (17T351)
Parts 120 V Control Box Assembly (17T351) 120V 230V 25M530 25M563 Ref. Part Description Qty. Series A Current Current 17T364 KIT, guard, toggle switch ----- 17T362 KIT, boot, toggle switch ----- 17T425 KIT, switch, toggle ----- 405▲ 16T764 LABEL, warning, shock ----- 17T365 KIT, label, on-off -----... -
Page 29: Dimensions
Dimensions Dimensions CM20 Dimensions U.S. Metric 67.0 in. 170 cm 26.5 in. 67 cm 42.5 in. 108 cm 22.75 in. 58 cm 27.50 in. 70 cm 3A5202F... - Page 30 Dimensions 3A5202F...
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Page 31: Technical Specifications
Technical Specifications Technical Specifications ToughTek CM20 Continuous Mixers Metric Maximum water feed inlet pressure 100 psi 0.69 MPa, 6.9 bar 300 rpm (25M530 Series A), Maximum Motor Speed 260 rpm (25M530 Series B), 290 rpm (25M563) Output *40 bags per hour Materials Water-based cementitious materials with aggregate less than 0.160 in. -
Page 32: Graco Standard Warranty
With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.