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Troubleshooting
Related Manuals for WerkMaster Cobra
Summary of Contents for WerkMaster Cobra
- Page 1 45 OPERATOR’S MANUAL IMPORTANT: Read before using your new machine WerkMaster Grinders and Sanders Inc. 6932 Greenwood Street, Burnaby, BC V5A 1X8 tel: 604.629.8700 | toll free: 1.866.373.WERK | fax: 604.444.4231 www.werkmaster.com | email: support@werkmaster.com © Copyright 2018...
- Page 2 WerkMaster will not in any event be liable to the user, any successors in interest or any beneficiary or assignee relating to this sale for any consequential,...
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Page 3: Table Of Contents
Weekly ........................ 1 8 Monthly ........................ 1 8 Troubleshooting .................... 1 9 APPENDIX – VFD troubleshooting and diagnostics ........ 2 1 EXPLODED VIEW AND PARTS LIST – COBRA and PYTHON ...... 2 4 Glossary ...................... 2 9 RPA ........................29 VCT ........................29 Warranty Information .................. 3 0 OPERATOR’S MANUAL... -
Page 4: Introduction
450 to 1160 RPM Run on 220V 1 or 3 phase; can also be run on two 110V outlets using • WerkMaster’s Quick 220 kit (sold separately) Change the tooling and the COBRA can be used on hardwood, stone and • terrazzo PYTHON Aggressive and powerful surface prep and polish machine, designed to •... -
Page 5: Specifications
Has an adjustable, foldable handle for easy transport • Features WerkMaster Multi-Disc technology with 6 counter-rotating heads • and the versatility of using our 6” (152mm) ULTRA-FLEX Plug ‘N Go tooling system Features auto sensing dual phase variable frequency drive that lets you run •... -
Page 6: Safety Precautions
You must be physically able to handle their bulk, weight and power. Safe Operating Distance WerkMaster machines are to be operated by one person at a time. Maintain a • safe operating distance to other personnel. Keep bystanders a safe distance away during operation by blocking off the work area in all directions with roping, safety netting, or other material. -
Page 7: Safe Operating Conditions
Be sure all safety decals on the machine can be clearly read and • understood. Replace damaged or missing decals immediately. Maintain WerkMaster machines in safe operating condition with all guards • in place and secure, all mechanical fasteners tight, all controls in working order, and the grinder configured for the job application whether concrete, stone, terrazzo, wood or other surfaces. -
Page 8: General Connections
General Connections WerkMaster machines come with a variety of different plug configurations. The following table lists the plug used on the COBRA, RAZOR and the PYTHON. MODEL COBRA PYTHON RAZOR Voltage 250V 250V 250V Breaker Size 30 A 30 A... -
Page 9: Introduction To The Controls
Generator The minimum generator requirement for the COBRA is 6 kW. Minimum Requirements WARNING Exercise extreme caution at all times when working with electrical power. WerkMaster strongly recommends that only certified electricians be permitted to work with electrical power sources within a customer’s facility or on their job site. -
Page 10: Changing Tools
O A F E N Fig. 4 Fig. 5 1. Unplug the power cord from the twist lock inlet (C). Changing Tools 2. Ensure the handle is in its full upright position (Fig 2). Tilt the machine back (Fig 3). 3. Choose the appropriate tooling holder attachment – magnetic Plug ‘N Go plate (D) (Fig 4) for Metal Bond tools or Foam/Hook and Loop Adapter plate for polishing resins and sanding pads. -
Page 11: Adjusting The Handle
Adjusting the Handle To adjust the handle, pull the pin (H). Adjust the handle to a comfortable operating position. Re-insert the pull pin. WARNING Failure to check the pull pin is fully reinserted could result in damage to the machine or personal injury as the handle could release unexpectedly when the machine is being operated or tilted back. -
Page 12: Stopping The Machine
Stopping the Machine Release the activation lever. When you unplug the machine, the screen will stay lit for a few seconds as the VFD drains the power from its internal capacitors. This is normal. DANGER NEVER open the VFD panel while plugged in or immediately after unplugging the power cord. -
Page 13: Installing And Removing The Pad Driver
4. Using the arrow key, scroll to parameter V108. This parameter displays the total time that the machine has actually been running. 5. To exit the programming menu, simply press the program (PROG) button. This should bring you back to the main operation screen. Program Key To install and remove the pad driver on the bottom of the machine, you will need Installing and Removing... -
Page 14: Rotation Pattern Of Tooling Plates
Discs 1, 2, and 3 rotate clockwise CW Discs 4, 5, and 6 rotate counter-clockwise CCW Bottom of WerkMaster with numbered tooling plates and clockwise and counterclockwise labeling. Replacing the To replace a broken shear pin: Shear Pins 1. Remove the Plug ‘N Go plate (D) (Fig 4) from the pad driver (F). Before replacing the shear pin apply a generous amount of permanent red thread locker (Loctite 266) on the screw and into the hole. -
Page 15: Changing The Primary Belt
Changing the Primary Motor Mount Assembly Handle Belt Motor Mount Assembly Motor Shaft Primary Driven Housing Primary Belt Motor Coupling Primary Driven Sprocket Cover Plate Cover Plate Gasket Drive Train Top Plate Drive Train Gasket Secondary Belt Sprockets Drive Train Bottom Plate M8 Flat Socket Cap Screws Water Baffles (PYTHON only) Baffle Screws (PYTHON only) -
Page 16: Changing The Secondary Belt
To change the Primary Belt: 1. Disconnect the power and ensure the handle is in the upright position. 2. Unscrew the handle control cable (K) (Fig 5) from the VFD. 3. Remove the five button cap screws holding the Shroud (M) Fig 2) in place. 4. - Page 17 Drive Train Top Plate Drive Train Gasket Sprockets Secondary Belt Drive Train Bottom Plate Sealing Washers Hex Head Idler Bolts M8 Flat Socket Cap Screws Water Baffles Baffle Screws Pad Drivers Compression Foam Tooling Plates Fig. 9 To change the secondary belt: Disconnect power and ensure the handle is secure in the upright position.
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Page 18: Vacuum Port
Drive Train is opened. VACUUM PORT For the COBRA, PYTHON and Razor: The vacuum recommended for all the machines has a minimum CFM of 200. 1. ALWAYS run vacuum when sanding or dry grinding. -
Page 19: Water Feature
WATER FEATURE The PYTHON is equipped with a water feature. To use the water feature: Ensure the flow control valve is closed (B). Fill the water tank (A). Insert water feature plug into the vacuum port (C). Slowly open the flow control valve to the desired water flow and close as required. -
Page 20: Maintenance
MAINTENANCE WARNING Disconnect power before performing any maintenance, cleaning, or repair to your machine. CAUTION After wet operation, wash bottom of the machine thoroughly, failure to do so may result in damaged bearing seals. Do not use any sharp object or abrasive pad to clean the bearing seals. This can compromise the bearing seals. -
Page 21: Troubleshooting
Check to make sure that the power source has the • time and then shuts is tripped or the fuse if it is blown. appropriately sized breaker or fuse to meet the down. machine’s minimum power requirements. Make sure the generator meets the machine’s • minimum power requirements. Have an electrician perform a voltage test while the • machine is under load to see if the voltage drops below the machine’s minimum power requirements. Pad drivers are not Disconnect the power and tilt the If the pad turns independently, replace the secondary • turning or only one pad machine back. Spin one pad by belt. Go to www.werkmaster.com/support. driver is turning. hand. If all pad drivers turn but the motor fan does not turn, • replace the primary belt. Contact technical support: 866.373.9375. Not all discs are grinding Disconnect the power and tilt the Make sure all pad drivers are seated properly on the • the floor. machine back. Visually inspect each shafts. pad driver height against the Make sure grinding / polishing / sanding media is • adjacent pad driver. seated properly on the pad drivers. Make sure grinding / polishing / sanding media is worn •... - Page 22 ISSUE TEST SOLUTIONS The machine handle Check the handle plug to see if it has Secure the handle plug. If the handle controls are still • malfunctions. come loose. malfunctioning, contact customer service for instructions. VFD makes popping noise Wait for 1–2 hours, then remove the Contact a dealer or technical support: 866.373.9375. • and starts to smoke. VFD cover and check electronic ***Disconnect power components for discoloration, immediately!*** scorching, or swelling. VFD screen displays error Look up the message in the Contact technical support: 866.373.9375. • message or unusual Appendix. screen display. OPERATOR’S MANUAL Page 20...
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Page 23: Appendix - Vfd Troubleshooting And Diagnostics
APPENDIX – VFD TROUBLESHOOTING AND DIAGNOSTICS The following table shows the fault codes that may be displayed during X4 AC drive VFD Error Codes operation, along with suggestions for recovering from the fault condition. NOTE Shaded faults are auto-resettable, except where noted. CODE FAULT DESCRIPTION ADV. FAULT EXPLANATION SUGGESTIONS FOR RECOVERY DISPLAY CODE System System fault 0,1,2 Internal microprocessor problem. Consult the factory for repair or replacement. Thermistor profile is incorrect. Consult the factory for repair or replacement. Memory problem when reflashing the Reset the drive to factory settings. drive’s memory. Consult the factory. 1,2,3 Conflict in the drive’s memory. Reset the drive to factory settings. Consult the factory. EE Checksum Checksum error Unable to write an EE parameter after a Reset the drive to factory settings. - Page 24 OverVoltage Overvoltage The drive detected an overvoltage Verify that incoming line power is within condition condition during power-up (not auto- the drive’s specifications. Add a reactor resettable). or transformer to correct. 1,3 The drive detected an overvoltage Verify incoming line power and check for condition during a running condition. regenerative load. Reduce Regen load or add dynamic braking resistors. Regen Current Limit may help; consult the factory. The drive detected an overvoltage Verify that incoming line power is within condition on power-up on the load side. the drive’s specifications. Add a reactor or transformer to correct. Dyn Brake Dynamic brake DB circuit is active on power-up (not Check for a failed braking transistor. overload auto-resettable) Consult the factory. DB circuit is being activated for too Reduce the braking cycle or increase long, possibly causing the resistor to capacity. Activate the current limit; overheat or fail. consult the factory. DB circuit is overloaded because of too Reduce the braking cycle or increase large a regenerative load. capacity. Activate the current limit; consult the factory. 3,4,5 DB circuit is faulty on power-up (not auto-resettable).
- Page 25 Keypad Loss Keypad loss Problem with the keypad or a keypad Check the connection from the keypad connection. The drive detected that it to the control board. Note that the could not read any key presses. keypad is not designed for remote mounting. Problem with the keypad or a keypad connection, or wrong keypad was used. Keypad ID for an X4 could not be read. Problem with the keypad or a keypad connection. The drive detected that it could not write to the LCD. Comm Loss Communication The drive is in a serial link control path Check the connections to the Modbus loss and the amount of time since the last port. Adjust the value of parameter 903 Modbus comm. exceeded the time set (SIO Timer) as needed. in parameter 903 (SIO Timer). Regen Time Regen timeout The drive took more time to decelerate Reduce the amount of regenerative to a stop than is allowed. The timeout energy or increase the Regen timeout is determined by the longest decelera- parameter. tion ramp time (Decel1 or Decel2) plus the Regen timeout parameter. Pwr Bridge Power bridge 0,1,2 The drive detected a failure in the Check for a failed input power device. fault output power devices.
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Page 26: Exploded View And Parts List - Cobra And Python
EXPLODED VIEW AND PARTS LIST – COBRA AND PYTHON DRIVE TRAIN ASSEMBLY PARTS LIST ITEM PART NUMBER DESCRIPTION 110-0212-00 Sprocket Short Shaft Assembly 110-0213-00 Sprocket Long Shaft Assembly 590-0151-00 Flat Washer 580-0357-01 520-0011-00 Belt 110-0259-00 Idler Assembly 100-1414-00 Drive Train Upper Plate... - Page 27 BASE ASSEMBLY PARTS LIST ITEM PART NUMBER DESCRIPTION 110-0245-00 Drive Train Assembly 110-0249-00 Cover Assembly 580-0444-00 Drive Train Gasket 580-0308-00 Four-Bolt Flanged Pillow Block Bearing 590-0124-00 Fastener 590-0142-00 Lock Washer 500-0332-00 Sprocket 500-0244-00 Bushing 110-0251-00 Primary Housing Assembly 590-0193-00 Fastener 590-0329-00 Fastener OPERATOR’S MANUAL...
- Page 28 PLUG ‘N GO PLATE ASSEMBLY AND PAD DRIVER ASSEMBLY ITEM PART NUMBER DESCRIPTION 008-0553-00 Pad Driver Assembly 008-0576-00 or Hard Foam 008-0577-00 Soft Foam 008-0418-00 Shear Pin w Screw 008-0580-00 Plug ‘N Go Plate w Recess Assembly 008-0559-00 Pad Driver 008-0551-00 Grommet 008-0558-00...
- Page 29 COBRA HANDLE ASSEMBLY PARTS LIST ITEM PART NUMBER DESCRIPTION 590-0300-00 Screw 590-0149-00 Fastener 590-0148-00 Fastener 590-0196-00 Fastener 580-0362-00 Pull Pin 130-0266-00 Complete Upper Handle Assembly 130-0265-00 Complete Lower Handle Assembly 540-0003-00 8 Pin Cord OPERATOR’S MANUAL Page 27...
- Page 30 PYTHON WATER FEATURE HANDLE ASSEMBLY PARTS LIST 580-0437-00 Water Tank 130-0271-00 Complete Upper Handle Assembly 130-0274-00 Complete Lower Handle Assembly 590-0300-00 Shoulder Soc Screw 590-0149-00 Fastener 590-0148-00 Fastener 590-0196-00 Fastener 580-0362-00 Pull Pin 580-0399-00 Ball Valve 580-0439-00 Tubing 580-0438-00 Hose Mender 580-0236-00 Rubber Plug 540-0426-00...
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Page 31: Glossary
GLOSSARY Line Voltage This is the voltage of a power source when it has no load applied to it. It can also be called “nominal voltage” as the voltage expressed is usually a guideline voltage. Load Voltage This is the voltage of a power source when a load has been applied to it. As a load is applied to the power source, the resistance of the line is easier to examine. -
Page 32: Warranty Information
(3) from date of shipment to the original Purchaser or Distributor. Terms & Conditions WerkMaster will, at its option, repair or replace, at the WerkMaster factory or at a point designated by WerkMaster, any part which shall appear to the satisfaction of WerkMaster inspection to have been defective in material or workmanship. - Page 33 Purchaser to Seller, or the inconsistency of any terms therein and herein. SWM 07/2018 To get the best protection from your WerkMaster Warranty be sure to register your product(s) online at www.werkmaster.com/warranty. WerkMaster Grinders and Sanders Inc. 6932 Greenwood Street, Burnaby, BC V5A 1X8 tel: 604.629.8700 | toll free: 1.866.373.WERK | fax: 604.444.4231...
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