The Equalizer Systems EQ Smart-Level Motorized Version is a hydraulic leveling system designed for recreational vehicles, offering both automatic and manual leveling capabilities. The system is controlled via a keypad and can also be operated through a Bluetooth-enabled smartphone app, providing convenience and flexibility for users.

Function Description:

The primary function of the EQ Smart-Level system is to automatically level and stabilize an RV using hydraulic jacks. This is achieved through a microprocessor-controlled system that deploys and retracts the jacks as needed to achieve a level position. The system requires a "Null" setting, which defines the levelness of the coach, and an "Orientation Setting" to inform the control panel about the vehicle's front and the panel's mounting position. These settings are crucial for the Auto Level function to operate correctly.

The system includes safety interlocks to prevent accidental jack extension. For motorized vehicles, the jacks cannot be extended if the ignition key is in the "on" (engine run) position. A "jacks down" warning is also provided if a jack drifts from the stowed position during travel. Additionally, the system requires a chassis ground connection for the black/yellow wire; otherwise, the "Engage Park Brake" light will illuminate, and Auto Level will be denied. An optional park brake connection can further enhance safety by preventing Auto Level operation if the park brake is not engaged.

The hydraulic pump assembly is responsible for extending and retracting the jacks. Different pump models (e.g., 1551, 3218, 2532, 2542, 3195KS, 2542KS) are supported, each with specific wiring requirements for power connections and grounding. The system uses automatic transmission fluid (Dexron or multi-purpose ATF) as hydraulic fluid.

Usage Features:

Auto Level Operation: To initiate automatic leveling, the user simply presses and releases the "POWER" button, then the "AUTO LEVEL" button. The system will then automatically level the coach. During this operation, it is important not to move around or exit the coach to avoid faulting the operation. The keypad will signal successful completion with a dual-stage tone and will enter "sleep mode" after five minutes of inactivity. Auto Level will be denied if any jack indicator lights are on, requiring a full retraction before reattempting.
Manual Operation: Jacks can be extended or retracted manually using the "DOWN" and "UP" arrow buttons on the keypad. Jacks are operated in pairs (front, rear, left, right). To extend, the ignition key must be in the "off" position. The "jacks down" indicator lights illuminate when a jack is out of its stowed position.
Retraction: Before travel, all jacks must be fully retracted by pressing the "ALL RETRACT" button. While individual "UP" buttons can retract pairs of jacks, the "ALL RETRACT" button ensures all jacks are stowed and the system is safe for travel. The pump will run for a few seconds after the last jack retracts or until a time limit is reached. Users are advised to visually confirm that jacks are fully retracted.
Bluetooth Operation: For compatible systems, a smartphone app (EQ Smart-Level) can be downloaded from app stores to control the leveling system. This provides an alternative interface for operating the system, though orientation and null programming cannot be performed via Bluetooth.
Ignition Disable: A pink wire connected to the ignition positive prevents jack extension when the ignition is "on," serving as a safety measure and a "jacks down" warning.
Park Brake Interlock: The black/yellow wire, when connected to chassis ground, ensures the "Engage Park Brake" light is off and Auto Level is enabled. An optional connection to the park brake signal can further enhance this interlock.
Override Ability: In case of system failure (e.g., weak batteries), the system is equipped with a manual override feature to retract the jacks. This involves manipulating specific cartridge and directional valves on the pump manifold using an Allen wrench and, for some models, a drill with a socket to turn the manual override shaft on the motor. This allows the vehicle to be moved for service.

Maintenance Features:

Fluid Level Monitoring: The hydraulic reservoir needs to be filled with automatic transmission fluid (ATF). The fluid level should be monitored, especially during purging, as it will be at maximum when jacks are fully retracted and minimum when fully extended.
Purging Air from the System: This is a critical procedure performed during initial installation or after repairs to remove air from the hydraulic lines.
- Uni-Directional Pumps (1551, 3218): Involves retracting jacks in pairs or all at once until the pump sound changes (bypass mode), then extending and retracting jacks to full extension multiple times. If the fluid appears aerated, allow it to rest for about 10 minutes for foam to dissipate.
- Bi-Rotational Pumps (2532, 2542, 2542KS, 3195KS): This procedure is more involved, requiring the removal of a fitting/plug on the retract side to allow air to escape. Jacks are extended while maintaining fluid levels, and then retracted. The process involves fully extending and retracting jacks a minimum of three times, with rest periods for foam dissipation.
Battery Considerations: The system relies on a robust 12VDC power supply. A minimum Group 24 RV deep cycle marine battery with at least 100 RC (Reserve Capacity) and 500 CCA (Cold Cranking Amperage) is recommended. Multiple batteries in parallel are common, and a charging system should be in place to maintain optimal battery charge. Some lithium batteries may not be suitable due to their inability to provide high running amperage and surges.
Circuit Breakers: A manual reset, "slow blow" or "trip type" circuit breaker (100 or 150 amp, depending on the pump model) is required to protect against shorting of the positive feed to the pump assembly.
Wiring Maintenance: All power connections should use appropriate gauge wiring (#4 or #2 AWG depending on run length) to ensure adequate current delivery and minimize voltage drop. Connections must be sound, free of paint, and not susceptible to corrosion.
Cylinder Lubrication: If the system has not been used for over 24 hours, engaging the "ALL RETRACT" button prior to travel is recommended to re-pressurize the system. A lubricant like WD40 can be used to clean and lubricate the cylinder shafts.
Troubleshooting Indicators: The control panel features LED indicators for "Power," "Jack," "Operating," "Low Voltage," "Engage Park Brake," "Ignition On," and "Excess Slope." These indicators help diagnose system status and potential error conditions. For example, "Low Voltage" or "Excess Slope" LEDs indicate error conditions that must be resolved before operating the jacks.
Warranty: The system comes with a limited warranty covering defects in material and workmanship for one year from the original sale date of the vehicle. It is crucial to follow installation and operation guidelines, as modifications or improper use may void the warranty. Prior authorization from Equalizer Systems is required for warranty claims, parts returns, and labor reimbursement.

Days EQUALIZER SYSTEMS EQ Smart-Level - Hose Connections