KEEP FOR FUTURE REFERENCE INSTRUCTIONS International Version P.O.
TABLE OF CONTENTS SPECIFICATIONS ............................................................................................................ 3 WARNINGS ..................................................................................................................... 4 OPERATING FEATURES ................................................................................................... 5 ASSEMBLY .............................................................................................................
MAINTENANCE ............................................................................................................. 23 INSPECTION SCHEDULE 23 Every-Lift Inspection .............................................................................................................................................................. 23 Frequent Inspection ..............................................................................................................................................................
SPECIFICATIONS Description: Model Number: Vacuum Pads:1 Designed for use with a crane or other hoisting equipment, the MRTALP6-DC lifters employ vacuum to hold a load for lifting, and they provide manual 180° rotation and mechanically assisted, manual 90° tilt movements for load manipulation. MRTALP611LDC MRTALP6FS10TDC MRTALP610DCO (Six of standard rubber, spring-mounted with 1/4" [7 mm] travel and #60 filter screen) 11" [28 cm] nom. diameter, 10" [25 cm] nom. diameter 10" [25 cm] nom.
WARNINGS Powr-Grip is pleased to offer the most reliable vacuum lifters available. Despite the high degree of security provided by this product, certain precautions must be observed to protect the operator and others. Always wear personal protective equipment that is appropriate for the material being handled. Follow trade association guidelines. Always operate the lifter under conditions approved for its design (see INTENDED USE: OPERATING ENVIRONMENT).
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 MRTALP611LDC shown with Remote Control System option.
1 TRANSMISSION INDICATOR LIGHT 2 TRANSMITTER POWER/ENABLE BUTTON 3 RELEASE BUTTONS 4 APPLY BUTTONS 5 EMERGENCY TRANSMITTER DISCONNECT OPTIONAL RADIO TRANSMITTER Rev 10.
ASSEMBLY TO SET UP THE LIFTER 1) Open the shipping container and remove all materials for restraining or protecting the vacuum lifter. Save the container for use whenever the lifter is transported. 2) If necessary, assemble the lifter's lift bar as follows: One segment of the lift bar can be removed, to reduce overall lifter dimensions for shipping. If so, orient the removable segment (1) as shown in the illustration, and slide it over the other segment until the bolt holes align.
Note: Some hoisting equipment hooks could interfere with an upright load that extends beyond the lifter's pad frame. If the load would contact the hook during lifter operation, the operator must prevent this by attaching a sling (or other rigging that does not interfere with the load) between the hook and the lift spool. WARNING: Any sling used must be rated to carry maximum load weight plus lifter weight. Use the hoisting equipment to raise the lifter out of the shipping container.
TO CHANGE THE PAD FRAME CONFIGURATION The lifter offers a variety of pad frame configurations to accommodate different load dimensions and weights, as shown in the following illustration. Select a configuration to provide optimal support across the load surface and to minimize load overhang (see OPERATION: BEFORE USING THE LIFTER). Standard MRTALP611LDC pad frame shown. Rev 10.
Configurations are created by installing or removing the pad frame’s extension arms, by repositioning or removing the movable pad mounts, and by connecting or disconnecting certain vacuum pads, using the corresponding vacuum hoses. Always assemble the pad frame in a symmetrical arrangement, to keep the lifter balanced (see examples in preceding illustration). Note: The dual vacuum system is equipped with 2 air-line circuits, which are identified by colorcoded vacuum hoses.
To Install/Remove Extension Arms 1) Remove the cotterless hitch pin from one extension arm. 2) Insert the end of the extension arm in its socket on the pad frame, so that the holes align for the cotterless hitch pin. 3) Secure the extension arm in the pad frame by pushing the cotterless hitch pin through the holes until the retaining ball emerges on the far side of the pad frame socket. 4) Repeat steps 1-3 to install other extension arms as needed for the pad frame configuration desired.
INTENDED USE LOAD CHARACTERISTICS WARNING: This lifter is NOT intended for lifting hazardous materials, such as explosives or radioactive substances. The operator must verify that the lifter is intended to handle each load, in accordance with the following requirements: • The load must not exceed the maximum allowable weight specified under Load Capacity (see SPECIFICATIONS). • The load must be a single piece of nonporous or semiporous material with a flat and relatively smooth contact surface.
Conversely, allowable thickness increases as load weight decreases. In addition, an operator may be able to manually counteract the tendency of unstable loads to tilt out of the upright position, provided that the operator maintains control of the load at all times (see OPERATION: TO LIFT AND MOVE THE LOAD: About the Tilt Linkage and TO TILT THE LOAD). If necessary, contact Wood’s Powr-Grip for help in determining the maximum thickness permitted when handling any specific load.
OPERATION BEFORE USING THE LIFTER The operator must determine whether the lifter is capable of performing each intended task, in accordance with the SPECIFICATIONS and INTENDED USE sections of this INSTRUCTIONS manual. In addition, all of the following preparations must be completed prior to lifting any load. Taking Safety Precautions The operator must be trained in all relevant industry and regulatory standards for the operation of the vacuum lifter in its geographical location (eg, ASME B30.
CAUTION: Examine each air filter regularly, and empty when necessary. Two air filters help protect the vacuum generating system from contaminants. However, the lifter is not intended for use on wet load surfaces because the filters would not prevent liquid from entering the vacuum system. The operator must examine each filter regularly and remove any liquid or other contaminants found inside (see MAINTENANCE: AIR FILTER MAINTENANCE).
TO APPLY THE PADS TO A LOAD Positioning the Lifter on the Load Make certain that the contact surfaces of the load and all vacuum pads are free of any contaminates that could prevent the pads from sealing against the load (see MAINTENANCE: VACUUM PAD MAINTENANCE). Center the lifter’s pad frame to within 2" [5 cm] of the load center, since off-center loading can cause the load to rotate or tilt unexpectedly (see TO ROTATE THE LOAD EDGEWISE or TO TILT THE LOAD to follow), and it may also damage the lifter.
WARNING: Keep apply function activated throughout lift. Note: If a vacuum pad has been lying against a hard object (as during shipping), it may be slightly distorted. Although initially it may be difficult to apply the pad to a load, this condition should correct itself with continued use. Reading the Vacuum Gauges The lifter is equipped with 2 vacuum gauges, which indicate the current vacuum level in each circuit of the lifter’s vacuum system.
TO LIFT AND MOVE THE LOAD Positioning the Lift Bar WARNING: Lift bar must be oriented vertically to lift load. Never lift the load from a flat position with the lift bar latched parallel to the load. Always disengage the tilt latch (see TO TILT THE LOAD to follow) and raise the lift bar to a vertical orientation before attempting to lift. Interpreting the Warning Buzzer and Lift Light A lifter's Load Capacity is rated at a vacuum level of 16" Hg [-54 kPa] (see SPECIFICATIONS).
Monitoring the Low Vacuum Warning Buzzer Using the low vacuum warning buzzer requires minimal interaction from the operator. The warning buzzer sounds an alarm until the lifter attains sufficient vacuum to lift the maximum load weight (see SPECIFICATIONS: Load Capacity). After the lifter has attained this vacuum level, the alarm stops sounding, to indicate that the lifter is ready to lift the load. WARNING: Never attempt to lift load while alarm is sounding.
TO ROTATE THE LOAD EDGEWISE WARNING: Never disengage both the rotation latch and the tilt latch at the same time. This lifter is not designed for rotation and tilt functions to be used at the same time. Disengaging the rotation and tilt latches simultaneously could cause uncontrolled and unpredictable load movement, potentially resulting in load damage or injury to the operator.
TO TILT THE LOAD WARNING: Never disengage both the rotation latch and the tilt latch at the same time. This lifter is not designed for rotation and tilt functions to be used at the same time. Disengaging the rotation and tilt latches simultaneously could cause uncontrolled and unpredictable load movement, potentially resulting in load damage or injury to the operator. WARNING: Make sure load is positioned correctly on lifter (see TO APPLY); unbalanced loads may tilt unexpectedly when latch is disengaged.
After the load is successfully released, the lifter will automatically activate the stand-by mode to conserve the battery energy until the lifter is ready to lift another load. Once the stand-by mode is activated, only the blue power light remains illuminated. Prior to lifting another load, perform the Every-Lift Inspection as directed in MAINTENANCE: INSPECTION SCHEDULE. AFTER USING THE LIFTER Make sure the power switch on the lifter is in the OFF ( shuts off when the operator powers down the lifter.
MAINTENANCE WARNING: Always make sure battery is disconnected before servicing lifter. Note: One or more wiring diagrams are provided in the final section of this INSTRUCTIONS manual for reference when servicing the lifter or trouble-shooting a deficiency. INSPECTION SCHEDULE Perform inspections routinely, according to the following frequency schedule: Every-Lift Inspection • Examine the vacuum pads and load surface for contamination or debris (see VACUUM PAD MAINTENANCE to follow).
CAUTION: Be sure to use appropriate cleaning methods for each type of electrical component, as specified by codes and standards. Improper cleaning can damage components. • Keep a written record of all Periodic Inspections. If any deficiency is detected during the inspection, correct it before using the lifter. If necessary, return the lifter to Wood’s Powr-Grip or an authorized dealer for repair (see LIMITED WARRANTY).
MAINTENANCE SCHEDULE Unless specified elsewhere in this INSTRUCTIONS manual, the lifter does not require maintenance on a routine basis. Instead, maintenance must be performed whenever a deficiency is indicated by routine inspections or tests. Any maintenance warranted must be performed before resuming normal operation of the lifter. BATTERY TEST The lifter is equipped with a battery gauge to help the operator evaluate whether the battery has adequate energy for lifting.
Identify the input voltage marked on the battery charger, and plug it in to an appropriate power source.18 The power source must be equipped with a ground fault circuit interrupter, in order to reduce the risk of electrical shocks. WARNING: Power source must be equipped with ground fault circuit interrupter. Usually a battery takes no more than 16 hours to charge completely, after which the charger shuts off automatically.
Inspection Inspect each vacuum pad for the following deficiencies routinely, as directed in the preceding INSPECTION and TESTING SCHEDULES. Correct any deficiency before using the lifter. • Contaminates on the pad face or sealing edges: Soil build-up can prevent pads from sealing adequately or reduce the friction coefficient (see discussion preceding). Follow the directions to clean pads as necessary (see discussion to follow).
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 directed (see VACUUM PAD MAINTENANCE: Cleaning). 2) Apply the lifter to a clean, smooth, nonporous surface. The surface should be flat or possess no more curvature than the lifter is designed for (if any).
TO REPLACE SEALING RING INSERT IN VACUUM PAD If the lifter is equipped with VPFS10T vacuum pads, follow these directions: 1) Remove the old sealing ring insert: Hold the vacuum pad firmly and pull the ring insert out from the mounting groove. Discard any damaged ring insert. 2) Install a new sealing ring insert (see REPLACEMENT PARTS LIST): Push the ring insert into the mounting groove so that the insert's base (flat side) fits flush against the bottom of the groove.
AIR FILTER MAINTENANCE (for in-line filters) Filter Function and Conditions Requiring Service This air filter prevents solid particles from contaminating components in the vacuum system. CAUTION: Examine air filter regularly and empty when necessary. Open each filter regularly to determine whether liquid or other contaminants are trapped inside. Remove any liquid or contaminants found.
VACUUM PUMP MAINTENANCE − DYNAFLO DV1034204 WARNING: Before proceeding with any maintenance, disconnect power source. If the vacuum pump takes too long to attain full vacuum, it may require maintenance. Replace the diaphragms, gaskets/flap valves or (when preferable) the entire head assemblies24 (see REPLACEMENT PARTS LIST), as necessary to obtain acceptable pump performance. Perform the following maintenance on both heads of the pump.
VACUUM SWITCH ADJUSTMENT Vacuum Switch Function Two vacuum switches control various functions of the vacuum lifter (see OPERATING FEATURES for location of vacuum switches). While the lifter is powered up, each vacuum switch senses the vacuum level in one of the two vacuum circuits of the vacuum system. If either circuit loses significant vacuum while the lifter is in the apply mode, the system responds automatically.
• n_3 = -422. This setting turns off the low vacuum warning buzzer, light and/or strobe light and turns on the vacuum lift light, indicating that the lifter has already reached the minimum vacuum level (see n_4). Setting n_3 must always be set above n_4. • n_4 = -419. After the vacuum switch has turned off the vacuum pump(s) (see n_1) and the vacuum system has lost significant vacuum, setting n_4 turns on the low vacuum warning buzzer, light and/or strobe light and turns off the vacuum lift light.
REPLACEMENT PARTS LIST Stock No. 93221 66197BM 66197AM 66197AA 65442CA 65442AM 65441 65439AM 65439 65429 65211 65014 65010 64834 64832 64752 64713AM 64712AM 64711AM 64707AS 64706AZ 64702AM 64682 64665 64664 64590 64460 64453CT 64271 64269MA 64238AA 64233 64213 64199 59028 57389 54392 53122 49724TT 49672T 49646T 49643T 49605T 49586TA 49150 29353 16131 16057 16056 15920 15792AM 15632 15630 13532 13530 11726AM 10900 Description Vacuum Pump - Diaphragm Type - 2.
LIMITED WARRANTY Powr-Grip products are carefully constructed, thoroughly inspected at various stages of production, and individually tested. They are warranted to be free from defects in workmanship and materials for a period of one year from the date of purchase. If a problem develops during the warranty period, follow the instructions hereafter to obtain warranty service. If inspection shows that the problem is due to defective workmanship or materials, Powr-Grip will repair the product without charge.
Rev 10.
Rev 10.
