Wood's Powr-Grip PT49AC Flat & Smooth Surface Lifter

Wood's Powr-Grip PT49AC Flat & Smooth Surface Lifter — 500 lb AC-Powered Vacuum Lifter for Glass

The Wood's Powr-Grip PT49AC is an AC-powered vacuum lifter engineered for handling flat and smooth surfaces, with glass installations being its primary application. Rated to lift up to 500 lbs [225 kg], it is purpose-built for glazing contractors and trades professionals who demand reliable, controlled lifting of large, fragile panels. The PT49AC features powered tilt, enabling precise angular positioning of loads during installation without manual repositioning or secondary equipment.

Unlike air-powered alternatives such as the PT410TAIR or curved-surface models like the PT410CAC, the PT49AC runs on AC power and is optimized specifically for flat, smooth surfaces — making it the preferred choice for glass shops and glazing crews working in environments with reliable electrical supply. Its specialized pad configuration ensures consistent vacuum seal integrity on the non-textured surfaces typical of architectural glass panels.

Key Features & Benefits

Powered Tilt

The PT49AC's powered tilt mechanism allows operators to rotate loads to the required angle at the touch of a control, eliminating the physical strain and imprecision of manual tilting. This is critical when setting glass panels into vertical frames or curtain wall systems where exact orientation is required. It reduces crew size requirements and speeds up installation workflows.

500 lb [225 kg] Load Capacity

With a half-ton rated capacity, the PT49AC handles large commercial glass panels that would be impractical or unsafe to move by hand. This rating gives contractors confidence when lifting heavy architectural glazing, storefronts, and curtain wall panels. Rated load testing procedures are documented in the included instructions to verify performance before each job.

AC Power System

The AC-powered vacuum system provides consistent, reliable suction without dependence on a compressed air supply — ideal for job sites and shop environments with standard electrical access. This eliminates the need to source, maintain, and transport an air compressor solely for the lifter. The AC system also enables steady, uninterrupted vacuum generation throughout extended lifting operations.

Flat & Smooth Surface Optimization

The pad configuration and vacuum system of the PT49AC are specifically engineered for flat, non-porous, smooth surfaces such as architectural glass. This specialization ensures maximum pad-to-surface contact and vacuum seal integrity on materials where lifters designed for textured or curved surfaces would underperform. Operators can trust consistent hold across the full rated capacity.

Vacuum Monitoring & Safety System

The lifter includes a vacuum gauge that provides continuous visual feedback on suction levels during operation, allowing operators to detect and respond to vacuum loss before it becomes a safety issue. A vacuum loss warning option (Stock #93781SM) is also available as an add-on for enhanced jobsite safety. The system supports structured inspection and testing protocols including lifter/load compatibility tests, operational tests, and rated load tests.

Special Order Pad Frame Option

An alternative pad frame is available as a special order option, allowing the PT49AC to be configured for different load sizes and shapes beyond the standard configuration. This frame must be ordered at the same time as the lifter. It extends the versatility of the unit across varied glass panel geometries encountered on complex glazing projects.

Common Applications

Architectural Glass Installation

The PT49AC is ideally suited for lifting and positioning large glass panels in commercial construction, including storefronts, curtain walls, and facades. Powered tilt allows panels to be rotated from horizontal transport to vertical installation position with precision.

Glass Shop Handling

In glass fabrication and processing shops, the PT49AC enables safe movement of finished glass panels between workstations, storage, and loading areas. Its AC power source integrates seamlessly into shop electrical infrastructure without requiring auxiliary compressed air.

Window & Glazing System Assembly

Contractors installing window systems in mid- to high-rise construction benefit from the lifter's combination of high load capacity and powered tilt for accurate panel placement. It reduces manual handling risks associated with large, heavy glazing units.

Skylight & Overhead Glazing Installation

The PT49AC supports overhead glass installation work where load control and tilt precision are critical for safe positioning. Its vacuum system maintains hold on smooth glass surfaces throughout the lift and placement sequence.

Interior Glass Partition Installation

For interior glazing contractors installing glass office partitions and interior curtain walls, the PT49AC provides controlled, damage-free handling of polished glass panels. Its smooth-surface pad optimization prevents scratching or marring of finished glass faces.

Glass Loading & Unloading

The PT49AC can be used to load and unload glass panels from delivery vehicles and storage racks safely. Its high capacity and powered tilt simplify transitioning panels between horizontal and vertical orientations during staging operations.

Compatible Materials

• Flat architectural glass panels
• Polished glass sheets
• Smooth, non-porous flat surfaces
• Smooth glazing units
• Flat smooth-faced construction panels

Product Documents

• Operating Instructions – PT49AC
• Service Manual – AC Power System
• Troubleshooting – Leak Test Procedure
• Specifications – PT4 Series Spec Sheet
• Instructions – Vacuum Loss Warning Buzzer Option
• Specifications – Vacuum Loss Warning Buzzer Option

Application Instructions

Before Using the Lifter

1. Take all required safety precautions per the operating instructions before beginning any lift operation.
2. Perform all required inspections and tests, including the lifter/load compatibility test, operational tests, vacuum test, and rated load test.
3. Confirm the load surface is flat, smooth, clean, and non-porous to ensure proper pad seal.

Attaching the Pads to a Load

1. Generate airflow by connecting the lifter to a suitable AC power supply.
2. Position the lifter on the load surface, centering the vacuum pads over the intended contact areas.
3. Seal the pads onto the load surface and verify that full vacuum is achieved.
4. Read the vacuum gauge to confirm vacuum level is within the safe operating range (above the red zone, i.e., above 16" Hg [-54 kPa]).

Using Pad Shutoffs

1. Use pad shutoffs to isolate individual pads as needed for the load geometry or size.
2. Verify vacuum levels remain adequate after engaging any shutoffs.

Lifting and Moving the Load

1. Interpret and monitor the vacuum gauge continuously throughout the lift and move sequence.
2. Control the lifter and load smoothly, avoiding sudden movements that could compromise vacuum integrity.
3. In the event of a power failure, follow the emergency procedures outlined in the operating instructions before attempting to recover the load.

Tilting the Load

1. Use the powered tilt control to rotate the load to the required installation angle.
2. Confirm the load is stable and vacuum levels remain adequate throughout the tilt operation.

Releasing the Pads from the Load

1. Once the load is safely positioned and supported, activate the release function to disengage the vacuum pads from the load surface.
2. Note: Do not use the release function when sections of the vacuum system are capped or closed off during testing, as pressure buildup may damage components.
3. Use stand-by mode as appropriate per the operating instructions when the lifter is not actively lifting but remains powered.

After Using the Lifter

1. Store the lifter per the guidelines in the operating instructions to protect pads, hoses, and fittings from damage.
2. Transport the lifter using approved methods to prevent stress on vacuum components.
3. Perform post-use inspection and log any deficiencies for service before next use.

Technical Specifications

Safety Data Summary

Hazard Information

• Severe vacuum leak: lifter will be unable to draw full vacuum (gauge reads below 16" Hg [-54 kPa], in the red zone) — do not lift loads under this condition.
• Moderate vacuum leak: loss of more than 4" Hg [-13.5 kPa] in 5 minutes during a vacuum test with power off — requires repair before resuming operation.
• In case of power failure during a lift, follow emergency procedures in the operating instructions before attempting to handle the suspended load.
• Do not use the lifter's release function when any section of the vacuum system is capped or plugged during testing — pressure buildup may damage components.
• Do not apply soapy water to fittings or vacuum hoses when searching for leaks — it will be drawn into the vacuum system and may cause damage.
• Disconnect AC power source before performing any service on the lifter.
• Service must be performed by qualified service personnel only.
• The lifter is intended for use by professional equipment operators only — read and understand the operating instructions before use.

Personal Protective Equipment

• Use appropriate PPE as required by site safety standards and local regulations when operating vacuum lifting equipment.
• Ensure all personnel in the lift zone wear hard hats and appropriate foot protection.
• Use gloves when handling glass panels to prevent cuts and to maintain surface cleanliness for pad adhesion.

Safe Handling

• Perform lifter/load compatibility test, operational tests, vacuum test, and rated load test before each use.
• Monitor vacuum gauge continuously throughout all lift, move, and tilt operations.
• Inspect vacuum pads, hoses, and fittings for contamination, cuts, abrasions, cracks, and loose connections before every use.
• When removing a hose from a barbed fitting, cut approximately 1/8" to 1/4" [3 to 6 mm] off the hose end before reinstalling to remove damaged hose ends that could cause leaks.
• Avoid damaging barbs on fittings when removing hoses, as nicks or cuts can create new vacuum leaks.
• Follow the manufacturer's inspection schedule and service schedule — any deficiency found must be corrected before resuming normal operation.
• Store and transport the lifter per the guidelines in the operating instructions to protect all vacuum components.

Frequently Asked Questions

Q: Is the PT49AC a stock item or does it require lead time?
A: The PT49AC (Stock #97095) is a Special Order item. Contractors should plan ahead and order in advance of their project schedule to account for lead time. Contact Diamond Tool Store for current availability and estimated delivery.

Q: Can the PT49AC be used on textured or curved glass surfaces?
A: No. The PT49AC is specifically engineered for flat and smooth surfaces. For textured stone or similar surfaces, the PT410TAIR is the appropriate model. For curved surfaces such as bulletproof windshields, the PT410CAC should be specified instead.

Q: What power supply does the PT49AC require, and is a voltage adaptation option available?
A: The PT49AC operates on AC power. A Voltage Adaptation option (Stock #93032) is available to adapt the lifter for 2 KVA, 480V 60 Hz AC power supply, which should be ordered if the job site operates at that voltage specification.

Q: Can the pad frame be changed after purchase to handle different glass panel sizes?
A: An alternative pad frame is available as a special order option to accommodate different load sizes and shapes. However, this alternative frame must be ordered at the same time as the lifter — it cannot be added as a separate after-purchase order. Specify your load requirements at time of purchase.

Q: What should an operator do if the vacuum gauge drops into the red zone during a lift?
A: A reading below 16" Hg [-54 kPa] indicates a severe vacuum leak or loss of suction. Do not continue the lift. Safely lower and secure the load immediately, then inspect pads, hoses, and fittings for damage, contamination, or loose connections before resuming operation. Refer to the Troubleshooting – Leak Test Procedure document for systematic diagnosis.

Q: Is a vacuum loss warning available for the PT49AC?
A: Yes. A Vacuum Loss Warning Buzzer (Stock #93781SM) is available as an option and provides an audible alert in the event of vacuum loss, adding an additional layer of jobsite safety for operators who may not have a direct line of sight to the vacuum gauge at all times during a lift.