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WPG MRPT1211LAC, Instructions Manual, Page: 7 / 38

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WPG MRPT1211LAC Instructions Manual Download Page 7

Rev 2.0/4-16 

5 

MRPT1211LAC: #35063 

OPERATING FEATURES 

 

Note:  Components featured in the following instructions for assembling, operating or 

maintaining the vacuum lifter are underlined on their first appearance in each section. 

 
 

Standard MRPT89AC shown; 

Pad Spread and other details are different for Model MRPT1211LAC(O). 

 
 

1  LIFT BAR 

 7  VACUUM GAUGE 

12  VACUUM RELEASE BUTTON 

2  LIFT BAIL 

 8  VACUUM LIFT LIGHT 

13  AIR FILTER 

3  VACUUM PAD 

 9  VACUUM RESERVE TANK 

14  TILT ACTUATOR 

4  POWER SWITCH 

10  TILT TOGGLE SWITCH 

15  Enclosure with VACUUM SWITCH 

5  VACUUM PUMP 

11  ROTATION RELEASE LEVER 

16  CONTROL HANDLE 

6  PAD FRAME 

 

17  MOVABLE CONTROL PENDANT 

17 

Summary of Contents for MRPT1211LAC

Page 1: ..._____ please see serial label and record number here MANUAL ROTATOR POWER TILTER 2000 AC VOLTAGE READ ALL INSTRUCTIONS AND WARNINGS BEFORE OPERATING THIS LIFTER DESIGNED FOR THE MATERIALS HANDLING PROFESSIONAL P O Box 368 908 West Main Laurel MT USA 59044 phone 800 548 7341 phone 406 628 8231 fax 406 628 8354 ...

Page 2: ......

Page 3: ...Vacuum Gauge 11 Vacuum Level on Optimal Surfaces 12 Vacuum Level on Other Surfaces 12 TO LIFT AND MOVE THE LOAD 12 Load Capacity and the Lift Light 12 Monitoring Vacuum Indicators 13 Controlling the Lifter and Load 13 In Case of Power Failure 13 TO ROTATE THE LOAD EDGEWISE 14 TO TILT THE LOAD 14 TO RELEASE THE PADS FROM THE LOAD 14 AFTER USING THE LIFTER 15 Storing the Lifter 15 MAINTENANCE 16 INS...

Page 4: ...2 Replacing a Head Gasket and a Set of Filter Elements 22 Replacing a Set of Leaf Valves 22 VACUUM PUMP MAINTENANCE GAST N70 23 A Dissembling the Head Assembly 23 B Replacing the Head Side Leaf Valves 23 C Replacing the Cylinder Side Leaf Valves 23 D Dissembling the Cylinder Assembly 23 E Replacing the Cylinders and Cups 24 F Replacing O Rings and Reassembling the Head Assembly 24 VACUUM SWITCH AD...

Page 5: ... of power failure Vacuum Gauge Dial gauge indicates current vacuum level in positive inches of Hg and negative kPa Vacuum Lift Light Green light is energized whenever vacuum level is sufficient for lifting maximum load weight higher than 16 54 kPa Options Available with Model CF3TAO Telescoping Pad Arms This option enables a lifter to handle loads with different dimensions from those of the standa...

Page 6: ...r see INTENDED USE LOAD CHARACTERISTICS Never attempt to lift cracked or broken glass with this lifter Always position the vacuum pads correctly on the load prior to lifting see OPERATION TO APPLY THE PADS TO A LOAD Never lift a load when any vacuum indicator shows inadequate vacuum Never touch the vacuum release controls during a lift This may result in loss of vacuum and release of the load Neve...

Page 7: ...section Standard MRPT89AC shown Pad Spread and other details are different for Model MRPT1211LAC O 1 LIFT BAR 7 VACUUM GAUGE 12 VACUUM RELEASE BUTTON 2 LIFT BAIL 8 VACUUM LIFT LIGHT 13 AIR FILTER 3 VACUUM PAD 9 VACUUM RESERVE TANK 14 TILT ACTUATOR 4 POWER SWITCH 10 TILT TOGGLE SWITCH 15 Enclosure with VACUUM SWITCH 5 VACUUM PUMP 11 ROTATION RELEASE LEVER 16 CONTROL HANDLE 6 PAD FRAME 17 MOVABLE CO...

Page 8: ...rcuit interrupter Make certain the power cable is routed so that it does not become tangled while operating the lifter or hoisting equipment Then push the power cable s male connector into the female connector and twist to secure them together 3 Suspend the lifter from a crane as follows Select hoisting equipment crane and hoist when applicable rated to carry the maximum load weight plus the lifte...

Page 9: ...ging that does not interfere with the load between the hook and the lift bail WARNING Any sling used must be rated to carry maximum load weight plus lifter weight A hoist movable control pendant can be attached to the lifter by inserting it into the pendant basket provided Remove the pad covers and save them for use whenever the lifter is stored Now the lifter is operational 4 Perform Operational ...

Page 10: ...Wood s Powr Grip or an authorized dealer for more information While the minimum length and width of the load are determined by the Pad Spread see SPECIFICATIONS the maximum length and width are determined by the allowable overhang or the amount of load material that can extend sideways beyond the vacuum pads without breaking or otherwise being damaged The allowable overhang depends on the kind of ...

Page 11: ...Environmental contaminates could result in vacuum pump failure Using the lifter in wet environments may require the operator to take special precautions Moisture on contact surfaces of the load or vacuum pads diminishes the lifter s slip resistance thereby reducing the lifting capacity see MAINTENANCE VACUUM PAD MAINTENANCE Friction Coefficient WARNING Moisture reduces slip resistance of vacuum pa...

Page 12: ...ake any other precautions required to handle the load safely Consult appropriate trade association guidelines to determine what precautions are necessary for each type of load material Performing Inspections and Tests Perform all inspections and tests required by the INSPECTION and TESTING SCHEDULES see MAINTENANCE In addition if the lifter has been in storage always conduct a VACUUM TEST before p...

Page 13: ...ly the pad to a load this condition should correct itself with continued use WARNING Do not disconnect control pendant during lifter operation The movable control pendant is not intended to be disconnected during lifter operation Disconnecting the control pendant is likely to result in a load release and injury to the operator or others nearby Reading the Vacuum Gauge The vacuum gauge indicates th...

Page 14: ...e vacuum pads to the load as previously directed 3 When the vacuum level registers above 16 Hg 54 kPa on the vacuum gauge see TO LIFT AND MOVE THE LOAD Load Capacity and the Lift Light to follow place the power switch in the OFF position 4 Raise the load a minimal distance to assure that it is supported by the lifter 5 Monitor the vacuum gauge while the load is suspended for 5 minutes The lifter m...

Page 15: ...or damage see MAINTENANCE VACUUM PAD MAINTENANCE Inspection If the vacuum loss cannot be remedied immediately perform inspection and maintenance as needed to identify and correct any deficiency before resuming normal operation of the lifter Controlling the Lifter and Load When the vacuum indicators show that the lifter is ready use the hoisting equipment to raise the lifter and load as needed to c...

Page 16: ... Make sure load is positioned correctly on lifter see TO APPLY unbalanced loads may damage lifter Remember that the load requires more vertical space when tilted to the upright position as well as more horizontal space when tilted to the flat position Make sure there is sufficient clearance for the load to tilt without contacting the operator or any nearby objects The tilt toggle switch on the mov...

Page 17: ... the vacuum pads and all other components from damage while in transit Storing the Lifter Use the covers supplied to keep the vacuum pads clean CE In accordance with CE Standard EN 13155 the lifter is designed to rest on relatively horizontal surfaces without tipping over To store the lifter in this way set the lifter with the pads facing downward on a clean smooth flat surface Then lower the lift...

Page 18: ...pads fittings and hoses for visual damage Examine the air filter for conditions requiring service see AIR FILTER MAINTENANCE to follow Perform the VACUUM TEST to follow Check for unusual vibrations or noises while operating the lifter If any deficiency is detected during the inspection correct it before using the lifter and perform the Periodic Inspection to follow Periodic Inspection following ev...

Page 19: ...alent simulation 7 Employ the following method to test with an actual load 1 Place a test load with appropriate LOAD CHARACTERISTICS see INTENDED USE on a stable support Make sure the load is oriented in the upright position 8 2 Apply the vacuum pads to the load as previously directed 3 When the vacuum level registers above 16 Hg 54 kPa on the vacuum gauge turn off or disconnect the power source a...

Page 20: ...urface glaze Pads that exhibit wear stiffness or glaze must be replaced In addition all pads should be replaced on a regular basis preferably after no more than 2 years to ensure that the friction coefficient is not compromised If necessary contact your dealer or Wood s Powr Grip for more information Inspection Inspect each vacuum pad for the following deficiencies routinely as directed in the pre...

Page 21: ...ean A toothbrush or similar brush with bristles that do not harm rubber may be used to remove contaminates clinging to sealing edges 10 Wipe all residue from the pad face and allow the pad to dry completely before using the lifter VACUUM TEST Test the vacuum system for leakage routinely as directed in the preceding INSPECTION and TESTING SCHEDULES 1 Clean the face of each vacuum pad as previously ...

Page 22: ... bowl seal 5 with mild soap and water and skip to step 7 3 Unscrew the baffle 4 and remove the element and deflector 2 4 Discard the element and the bowl seal 5 5 Clean all internal parts and the bowl using mild soap and water only Do not use any other cleaners 6 Install the deflector and a new filter element then screw the baffle back on tighten gently finger tight to hold the element in place 7 ...

Page 23: ...f the bevel on the vanes 2 for step 5 Then remove the vanes by sliding them out the end of the rotor If needed rotate the rotor by hand to position the vanes for easier access 5 Make sure that the rotor and housing are clean and free of debris Orient the new vanes 2 like the old ones by matching the bevel Then insert the new vanes by sliding them into the empty slots in the rotor 6 Reinstall the e...

Page 24: ...nd a Set of Filter Elements 1 Loosen screws as necessary to remove the head 1 and turn it upside down 2 Replace the filter elements 3 and the head gasket 2 Then reverse step 1 for reassembly Replacing a Set of Leaf Valves 1 Loosen screws as necessary to remove the head 1 and the valve plate 6 12 2 Lift the head off the valve plate and turn the valve plate upside down 3 Loosen the valve screw 8 and...

Page 25: ...e the two long valve screws 10 from the head side of the valve plate 3 and then remove the two valve limiters 11 and exhaust leaf valves 12 3 Install new leaf valves 12 and reinstall the valve limiters 11 and long valve screws 10 C Replacing the Cylinder Side Leaf Valves 1 Note the orientation of the valve retainer plates 14 for reassembly 2 Remove the two short valve screws 13 from the cylinder s...

Page 26: ... F Replacing O Rings and Reassembling the Head Assembly 1 Install two new cylinder O rings 9 into the valve plate 3 and position the valve plate on the top of the cylinders 7 2 Install four new head O rings 8 into the valve plate 3 and position the two heads 2 on top of the valve plate 3 Make sure that the valve plate 3 and heads 2 are oriented in their original positions and secure the heads to t...

Page 27: ...ed to be adjusted to turn on the lift light at a lower vacuum level Otherwise the operator might wait unnecessarily for the lift light to turn on after the lifter has already attained sufficient vacuum to lift the maximum load weight If the lift light does not turn off before vacuum decreases to a level lower than the minimum lifting level the vacuum switch must be adjusted to turn off the lift li...

Page 28: ... stroke length also are preset and should not need adjustment However if adjustment is required proceed as follows 1 Remove the appropriate cover plate on actuator head facing screw shaft side to expose the limit switches 1 and 5 2 Engage the actuator until it reaches the correct retracted or extended position depending on adjustment needed Stop the actuator before any parts of the vacuum lifter c...

Page 29: ... Pad Spring Coil Type 12 64966 Actuator 2000 lbs 907 kg 12 305 mm Stroke 120 V AC 1 64967 Actuator 2000 lbs 907 kg 12 305 mm Stroke 240 V AC 1 64461 Circuit Breaker 10 A 1 64459MZ Circuit Breaker 8 A 1 64459 Circuit Breaker 5 A 1 64289 Bulb 24 V Bayonet for vacuum lift light 1 64262 Green Lens for vacuum lift light 1 64236 Vacuum Switch 1 4 NPT 1 64191 Contact Block for power switch 1 55952 Soleno...

Page 30: ... use Repairs are required due to abnormal wear and tear The product has been damaged misused or neglected If a problem is not covered under warranty Powr Grip will notify the customer of costs prior to repair If the customer agrees to pay all repair costs and to receive the repaired product on a C O D basis Powr Grip then will proceed with repairs Wood s Powr Grip Co Inc 908 West Main St P O Box 3...

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