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WPG MRPTHD1211LAC, Operating Instructions Manual

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WPG MRPTHD1211LAC Operating Instructions Manual Download Page 4

MRPTHD-AC: #35066

Rev 1.0/2-21

2

I

NSPECTION

 S

CHEDULE

................................................................................25

T

ESTING

...................................................................................................26

Lifter/Load Compatibility Test...........................................................................................26
Operational Tests ..............................................................................................................27
Vacuum Test......................................................................................................................27
Rated Load Test.................................................................................................................28

MAINTENANCE ....................................................................................29

V

ACUUM

 P

AD

 M

AINTENANCE

.......................................................................29

Pad-to-Load Friction Coefficient .......................................................................................29
Pad Inspection ..................................................................................................................29
Pad Cleaning .....................................................................................................................30

REPLACEMENT PARTS...........................................................................31
LIMITED WARRANTY ............................................................................32

T

O

 O

BTAIN

 R

EPAIRS

 

OR

 W

ARRANTY

 S

ERVICE

...................................................32

TABLE OF CONTENTS

Summary of Contents for MRPTHD1211LAC

Page 1: ...08 W Main P O Box 368 Laurel MT USA 59044 800 548 7341 phone 406 628 8231 phone 406 628 8354 fax www WPG com Record serial number in blank space above to locate see serial label on the product MANUAL...

Page 2: ...MRPTHD AC 35066 Rev 1 0 2 21 2...

Page 3: ...SING THE LIFTER 16 Taking Safety Precautions 16 Performing Inspections and Tests 16 TO ATTACH THE PADS TO A LOAD 17 Generating Airflow 17 Positioning the Lifter on the Load 17 Reading the Vacuum Gauge...

Page 4: ...tibility Test 26 Operational Tests 27 Vacuum Test 27 Rated Load Test 28 MAINTENANCE 29 VACUUM PAD MAINTENANCE 29 Pad to Load Friction Coefficient 29 Pad Inspection 29 Pad Cleaning 30 REPLACEMENT PARTS...

Page 5: ...qualified person should evaluate the effective lifting capacity for each use see definition under Rated Load Test on page 28 Per pad 125 lbs 57 kg Total 1 000 lbs 455 kg Per pad 167 lbs 75 5 kg Total...

Page 6: ...MRPTHD AC 35066 Rev 1 0 2 21 4 Note Standard MRPTHD89AC top and MRPTHD1211LAC bottom are shown SPECIFICATIONS...

Page 7: ...Rev 1 0 2 21 MRPTHD AC 35066 5 Note Standard MRPTHD2011LAC is shown SPECIFICATIONS...

Page 8: ...fter if the Maximum Load Capacity or any safety label appears to be missing or obscured Make sure the contact surfaces of the load and vacuum pads are clean before attaching the lifter see MAINTENANCE...

Page 9: ...TON 14 TILT ROTATION RELEASE TOGGLE SWITCH 15 MOVABLE CONTROL PENDANT 16 TILT SPEED CONTROLLER 17 LIFT BAR 18 CONTROL HANDLE 19 TILT ACTUATOR 20 TRANSFORMER optional 21 LIFT POINT 22 PARKING STAND opt...

Page 10: ...operation 2 3 Plug in the power cable 2A 2B Insert the power cable s male connector into the female connector and twist to secure them together fig 2A B 3 3A As needed adjust the lift point position...

Page 11: ...ated for Maximum Load Capacity plus Lifter Weight Note Use rigging fig 4F as needed to make sure the hook does not interfere with the load 4 3 Use the hoisting equipment to remove the lifter from the...

Page 12: ...t to match different load dimensions 1 MRPTHD1211LAC MRPTHD2011LAC 1 Choose a configuration to maximize support across the load surface and to minimize load overhang see LOAD CHARACTERISTICS on page 1...

Page 13: ...has sufficient capacity to support the load in question 1 Note To calculate the lifting capacity when some pads are removed consult the Per Pad Load Capacity and multiply by the number of pads curren...

Page 14: ...s 1 1A 2A 3A Remove the cotterless hitch pin from a movable pad mount fig 1A 2 Move the pad mount to the desired position on the pad frame and align the pin holes fig 2A 3 Reinsert the pin to secure t...

Page 15: ...al completely and all vacuum hoses function correctly see Vacuum Test on page 27 To connect a vacuum hose push the male and female ends of the quick connector together until they lock fig 1B To discon...

Page 16: ...acity 5 Note Standard vacuum pads can stain or deform load surfaces with light colors or soft coatings Test such surfaces for damaging effects before using the lifter on them 6 1 Although concave vacu...

Page 17: ...res 1 2 The lifter is not designed to be watertight Moisture can result in reduced lifting capacity Do not use it in rain or other unsuitable conditions CE A secondary positive holding device is requi...

Page 18: ...ry standards for lifter operation in your region Follow trade association guidelines about precautions needed for each load material Performing Inspections and Tests Follow the INSPECTION SCHEDULE on...

Page 19: ...the load fig 2A 2 1 If any powered component fails to function while the power switch is in the on position make sure the lifter is connected correctly to an appropriate power source see ASSEMBLY If s...

Page 20: ...the vacuum level to reach 5 Hg 17 kPa press on any vacuum pad that has not yet sealed Once the pads have sealed the lifter should be able to maintain sufficient vacuum for lifting except when used ab...

Page 21: ...for lifting the maximum load weight However if the lift light turns off and the vacuum gauge shows a level less than 16 Hg 54 kPa 1 Stay clear of any suspended load while indicators warn of low vacuum...

Page 22: ...utes without power this depends on many factors including the LOAD CHARACTERISTICS on page 14 and the condition of the vacuum pads see VACUUM PAD MAINTENANCE on page 29 Stay clear of any suspended loa...

Page 23: ...under control at all times using control lines hand cups or other appropriate means Unbalanced loads may rotate unexpectedly when rotation latch is disengaged 3 Move the toggle switch on the movable c...

Page 24: ...d 1 Make sure the load has enough clearance to tilt without contacting anyone or anything 2 3A Move the toggle switch on the movable control pendant up or down fig 3A to tilt the load as required 3 Re...

Page 25: ...attach Before you lift another load perform the Every Lift Inspection see INSPECTION SCHEDULE on page 25 AFTER USING THE LIFTER 1 Place the power switch in the off position Caution Do not set the lift...

Page 26: ...ng over on relatively horizontal surfaces use the parking stands as previously described if the lifter has them Otherwise place the vacuum pads facedown on a clean smooth flat surface lower the lift b...

Page 27: ...vibrations or noises while operating lifter Examine entire lifter for evidence of looseness excessive wear or excessive corrosion deformation cracks dents to structural or functional components cuts...

Page 28: ...uum gauge place the power switch in the off position 6 Take precautions in case load should fall during test Raise the load a minimal distance to make sure it is supported by the lifter 7 Watch the va...

Page 29: ...load should fall during test After the vacuum level appears in the green range on the vacuum gauge raise the load a minimal distance and place the power switch in the off position 5 Watch the vacuum...

Page 30: ...e it suspended for 2 minutes 5 Once the test is completed lower the load for release as previously directed 6 Never use lifter that has failed test Inspect the lifter for any stress damage and repair...

Page 31: ...on coefficient of vacuum pads Replace pads every 2 years or more often when necessary Pad Inspection 1A Inspect each vacuum pad fig 1A according to the and correct the following faults before using th...

Page 32: ...use rubber conditioners on vacuum pad Many rubber conditioners can leave a hazardous film on vacuum pads 2 Prevent liquid from entering the vacuum system through the suction hole on the pad face 3 Wi...

Page 33: ...MRPTHD12 2011LAC 12 20 49170 End Plug 3 x 3 x 3 16 Tubing Size for MRPTHD12 2011LAC 4 35277 Service Manual AC High Duty 1 29353 Pad Cover 8 12 20 16057 Quick Connector 1 8 F NPT Male 8 12 20 16056M Q...

Page 34: ...wear and tear and or the product has been damaged misused or neglected If a problem is not covered under warranty WPG will notify the customer of costs prior to repair If the customer agrees to pay al...

Page 35: ...MRPTHD AC 35066 Rev 1 0 2 21 34...

Page 36: ...Rev 1 0 2 21 MRPTHD AC 35066 35...

Page 37: ...MRPTHD AC 35066 Rev 1 0 2 21 36...

Page 38: ...Rev 1 0 2 21 MRPTHD AC 35066 37...

Page 39: ...MRPTHD AC 35066 Rev 1 0 2 21 38...

Page 40: ...Rev 1 0 2 21 MRPTHD AC 35066 39...

Page 41: ...MRPTHD AC 35066 Rev 1 0 2 21 40...

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