The ECONO LIFT "SL" Series Scissor Lift is an ergonomic product designed for safe and efficient material handling, providing vertical lifting capabilities for various industrial applications. This owner's manual details its installation, operation, maintenance, and troubleshooting, ensuring users can operate the equipment safely and effectively.
Function Description:
The Scissor Lift is designed to raise and lower loads vertically. It operates using a hydraulic system, where activating an "up" switch energizes a motor coupled to a positive displacement pump. This pump draws hydraulic fluid from a reservoir and transfers it under pressure to a cylinder, forcing a piston forward and raising the platform. Releasing the "up" button stops the lift, and a check valve in the pump holds it in position. To lower the lift, a "down" switch energizes a solenoid, allowing oil from the cylinder to return to the reservoir through an adjustable flow control valve, ensuring a smooth and controlled descent.
Important Technical Specifications:
The manual provides a table for various motor sizes and corresponding fuse and breaker requirements, indicating the electrical specifications for different configurations:
- 1 HP, 115V, 1 Phase: 30 AMP Fuse, 25 AMP Breaker
- 1 HP, 208-230V, 1 Phase: 25 AMP Fuse, 20 AMP Breaker
- 1 HP, 230V, 3 Phase: 15 AMP Fuse, 10 AMP Breaker
- 1 HP, 460V, 3 Phase: 7.5 AMP Fuse, 5 AMP Breaker
- 1 HP, 575V, 3 Phase: 7.5 AMP Fuse, 5 AMP Breaker
The hydraulic system uses CSR Dextron automatic transmission fluid or an equivalent, with tank capacity varying per unit. A hydraulic velocity fuse, mounted on the cylinder port, is a critical safety device that stops oil flow (locks up) if it reaches 6 GPM, preventing the load from falling in case of a hose rupture.
The "SL" series lift tables come in various load capacities and vertical travel heights, as detailed in the parts list (Figure 1). These include:
- 2,000 lbs Cap: Available with 36", 42", and 48" vertical travel.
- 4,000 lbs Cap: Available with 36", 42", and 48" vertical travel.
- 6,000 lbs Cap: Available with 36", 42", and 48" vertical travel.
- 8,000 lbs Cap: Available with 36" and 42" vertical travel.
- 10,000 lbs Cap: Available with 36" and 42" vertical travel.
Key components listed with their part numbers and descriptions include:
- Frame: Base Assembly, Inner Leg Assembly, Outer Leg Assembly, Platform Assembly.
- Pivot Pins: Upper cylinder pins, Lower cylinder pins, Upper/Lower Hinge Pins, Main Pivot Pins (various sizes).
- Bushings: Main Pivot Flange Bushings, Upper/Lower Hinge Bushings, Upper cylinder Bushings, Lower cylinder Bushings.
- Cylinders: Various stroke lengths and port configurations (e.g., CYL-3010-180-1, CYL-4014-180-1).
- Hydraulic Components: Velocity Fuse (VF5), Seal Kit, Elbow Fittings, Hydraulic Hose, Hex Nipple.
- Turn Table Attachments: Pin for Bearing, Bearing, Hex head bolts, Washers, Nuts, Arm spring detent, Spring, Manual locking spring detent, Flange bushing, Snap ring, Shoulder bolt.
Usage Features:
- Safety First: The manual emphasizes reading and understanding all instructions before operation. It warns against performing repairs with the platform raised, placing hands/feet under the platform in motion, standing/sitting/climbing on the lift, using it on unstable surfaces, or exceeding load capacity.
- Proper Loading: Loads must be centered and within the maximum rated capacity. The lift should not be loaded while running, and unloading should only occur after it has come to a complete stop.
- Controlled Operation: The lift is designed for smooth, controlled movement. A factory-preset relief valve ensures maximum safe capacity. The adjustable flow control valve allows for controlled lowering speed.
- Pre-operation Checks: Before initial use, users must inspect for shipment damage, check electrical cables and hydraulic hoses for damage or leaks, verify connection tightness, ensure the base frame is flat, and inspect for bent metal parts.
- Electrical Installation: All wiring must conform to local codes and be performed by licensed electricians. Motor direction is critical and must match the direction arrow on the motor frame.
- Hydraulic Fluid: The hydraulic oil level must be checked and topped up if necessary before operation.
Maintenance Features:
- Routine Maintenance: Monthly checks are recommended to minimize costly repairs and hazardous conditions. Before any maintenance, the power must be shut off.
- Check oil level and add to the reservoir if necessary.
- Inspect pivot bushings and pins for wear.
- Ensure all pins are secured and retained.
- Check hydraulic lines for damage or leakage and replace if damaged.
- Inspect wiring for damage and replace immediately if wear is evident.
- Bushings on pivot pins are permanently lubricated and require no servicing.
- Safety Blocks: A critical warning states never to go under or service the Scissor Lift without having safety blocks on the camfollower track.
- Troubleshooting Guide: The manual provides a comprehensive troubleshooting section for common issues:
- Scissor Lift Will Not Move (No operational noises): Check power switch, fuses, overloads, and motor voltage.
- Scissor Lift Will Not Move (Operational noises): Check for overload/jamming, motor single phasing (3 phase) or low voltage (1 phase), oil shortage (low reservoir or line failure), or a stuck-open solenoid valve.
- Scissor Lift Will Not Go Down: Check if the velocity fuse is locked up (close flow control valve, press up, then try down), or if the down solenoid is faulty.
- Scissor Lift Will Descend by Itself: Check for cylinder seal leaks, check valve in pump not seating, or a stuck-open solenoid valve.
- Warranty Policy: Econolift offers a warranty on materials, parts, or complete units that prove defective within 80 days of shipment, with replacement or repair at their option. Individual part warranties are also passed along:
- Pump (power systems): One year warranty.
- Battery: First six months straight exchange; six to twenty-four months exchange on a pro-rated schedule.
- Cylinder: One year warranty.
- All warranties are subject to individual manufacturer exclusions. Service is the dealer's responsibility, not covered by the factory.
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