KEEP FOR FUTURE REFERENCE INSTRUCTIONS International Version P.O.
TABLE OF CONTENTS SPECIFICATIONS ............................................................................................................ 3 WARNINGS ..................................................................................................................... 4 OPERATING FEATURES ................................................................................................... 5 ASSEMBLY .............................................................................................................
VACUUM PAD MAINTENANCE...................................................................................................... 19 Friction Coefficient .....................................................................................................................................19 Inspection .................................................................................................................................................19 Cleaning ...........................................................
SPECIFICATIONS Description: Designed for use with a crane or other hoisting equipment, the VLGG10-DC lifters employ vacuum to hold a load for lifting in the upright orientation.
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 VLGG1011LDC shown.
ASSEMBLY 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) 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 lifter weight (see SPECIFICATIONS: Maximum Load Capacity and Lifter Weight).
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.
OPERATING ENVIRONMENT The operator must determine whether the lifter is intended to be used in each work environment, in accordance with the following restrictions: WARNING: Never use lifter in dangerous environments. • This lifter is not intended for use in any environment that is inherently dangerous to the operator or likely to compromise the lifter's ability to function. Environments containing explosives, caustic chemicals and other dangerous substances must be avoided when using the lifter.
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.
TO APPLY THE PADS TO A LOAD Powering up the Lifter Place the power switch in the ON ( ) position (blue indicator light remains illuminated while power is engaged). The power switch must remain in the ON position while operating the lifter.3 WARNING: Never turn power off while operating lifter.
Reading the Vacuum Gauge The vacuum gauge indicates the current vacuum level in the lifter’s vacuum system. The green range indicates vacuum levels sufficient for lifting the maximum load weight, whereas the red range indicates vacuum levels that are not sufficient for lifting the maximum load weight. The gauge needle should show a sudden surge in vacuum as the vacuum pads seal against the load.
TO LIFT AND MOVE THE LOAD WARNING: Never attempt to lift load when lifter is in horizontal orientation. Load Capacity and the Lift Light A lifter’s Load Capacity is rated at a vacuum level of 16" Hg [-54 kPa] (see SPECIFICATIONS). After the lifter has attained this level, the vacuum pumps turn off automatically, to conserve battery energy. At the same time, the green vacuum lift light turns on, to indicate that the lifter is ready to lift the maximum load weight.
In Case of Power Failure The lifter is equipped with a vacuum reserve tank, designed to maintain vacuum temporarily in case of a power failure (ie, in battery). WARNING: Stay clear of any suspended load in the event of a power failure.
AFTER USING THE LIFTER Leave the apply/release switch in the neutral position and place the power switch in the OFF ( ) position (blue indicator light shuts off when power is disengaged). CAUTION: Do not set the lifter against any surfaces which could soil or damage the vacuum pads. Parking feet are built into the bottom of the pad frame to support an unloaded lifter when not suspended from a crane: Use the hoisting equipment to gently lower the lifter until the parking feet support its entire weight.
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).
• 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). Infrequent Use If a lifter is used less than 1 day in a 2-week period, perform the Periodic Inspection each time before using 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. Factors such as the condition of the battery, the time required to execute a lift, and the porosity of the load combine to determine how much battery energy is needed. It is the operator’s responsibility to evaluate these conditions and to make sure the battery has sufficient energy to complete a lift safely.
BATTERY RECHARGE CAUTION: Charge battery only while lifter’s power switch is in the OFF ( ) position. Operating the lifter when the battery charger is connected to an AC power source could result in permanent damage to the charger. Only use a battery charger supplied by or approved by Wood's Powr-Grip; other chargers may reduce battery life. Charge the battery as soon as possible after any extended use of the lifter, or whenever the battery gauge indicates diminished energy (see BATTERY TEST preceding).
VACUUM PAD MAINTENANCE Friction Coefficient The friction coefficient represents the lifter's ability to resist load slippage when the load is oriented in any position except horizontal. If the contact surfaces of either the load or the vacuum pads are not clean, dry and in good condition, slippage is more likely to occur. The Load Capacity of most Powr-Grip lifters is based on a friction coefficient of 1 (only Flat Lifters are exempt from this requirement).
WARNING: Never use unauthorized rubber cleaners or conditioners to clean vacuum pad. To prevent liquid from contaminating the vacuum system during cleaning, cover the suction hole in the recess for the filter screen or make sure the pad faces downward. Use a clean sponge or lint-free cloth to apply an authorized cleanser and wipe the pad face clean. A toothbrush (or similar brush with bristles that do not harm rubber) may be used to remove contaminates clinging to sealing edges.
AIR FILTER MAINTENANCE − LARGE (for 4.4 oz [130 ml] bowl size filters) Filter Function and Conditions Requiring Service An air filter prevents solid particles and liquid from contaminating components in the vacuum system. CAUTION: Examine air filter regularly and empty when necessary. Liquid must not contact any portion of the filter element; remove trapped liquid regularly.
VACUUM PUMP MAINTENANCE ― THOMAS 2907CDC22/12 WARNING: Before proceeding with any maintenance, disconnect power source. If the vacuum pump takes too long to attain full vacuum, it may require maintenance (see OPERATING FEATURES for location of pump). Replace the diaphragms, valve flappers or head gaskets as necessary to obtain acceptable pump performance (see REPLACEMENT PARTS LIST). Perform the following procedures on both heads of the pump.
VACUUM PUMP MAINTENANCE − DYNAFLO DV1032102 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 diaphragm, gasket/flap valves or (when preferable) the entire head assembly15 (see REPLACEMENT PARTS LIST), as necessary to obtain acceptable pump performance. CAUTION: Do not over-tighten the head screws, because this may damage the threads in the pump body.
VACUUM SWITCH ADJUSTMENT Vacuum Switch Function A vacuum switch controls the vacuum pump and the vacuum lift light for a DC lifter (see OPERATING FEATURES for location of vacuum switch). When the lifter's power switch is in the ON position ( ), turning the apply/release switch to the “APPLY” position activates the vacuum pump, which evacuates the vacuum pads.
Adjustment Procedure WARNING: Load capacity decreases whenever vacuum switch is adjusted to maintain lower vacuum level. 1) Using a 1/4" open-end wrench (as provided), turn the adjustment screw about 1/6th turn at a time (approximately one flat of the screw head). To maintain a lower vacuum level, turn the screw clockwise (when viewing vacuum switch from end with electrical connectors).
REPLACEMENT PARTS LIST Stock No.
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.
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