Hydraulic elevators are essential to the daily operation of university campuses, healthcare facilities, and multi-story properties of all types. When an elevator is out of service, the consequences are immediate: disrupted operations, accessibility barriers, emergency responses, higher costs, and reduced passenger confidence.

One of the least visible contributors to these problems is the condition of the hydraulic fluid itself.

Oxidation, moisture contamination, additive depletion, thermal stress, and varnish formation develop gradually inside the system. These changes can lead to sluggish valve response, inconsistent leveling, reduced ride quality, and unexpected downtime. By the time symptoms appear, fluid-related risk has already increased and performance has already begun to suffer.

Restoring Fluid Health: Varnish and Additive Remediation

Covion Solutions has decades of experience solving the most difficult varnish and lubricant quality problems in critical hydraulic equipment.

For hydraulic elevators, we apply that expertise through targeted varnish removal and additive restoration services. These services clean the system, remove varnish precursors and deposits, and restore antioxidant protection so the fluid can again support reliable valve operation, consistent leveling, and smooth ride quality, ensuring improved safety and reliability.

This work delivers immediate, measurable value. It improves current performance, protects expensive components, and demonstrates the direct link between fluid condition and elevator safety and reliability.

Continuous Visibility with FluidIQ™

Once fluid health is restored, the next priority is preventing the same degradation from returning unnoticed.

FluidIQ™ provides continuous, real-time monitoring of hydraulic oil condition using advanced sensors and AI analytics. It tracks:

• Varnish potential 
• Antioxidant remaining life 
• Moisture contamination
• Temperature and other factors

A FluidIQ™ gives facility and maintenance teams ongoing visibility into fluid condition so developing issues can be addressed before they affect elevator performance or passenger experience.

Long-Term Fluid Quality Agreements

Many organizations prefer a more complete solution. Covion offers Fluid Quality as a service program that combine ongoing FluidIQ™ monitoring with guaranteed fluid quality through condition-based varnish and additive maintenance.

Under these agreements, Covion takes responsibility for maintaining hydraulic fluid condition to agreed targets. The result is more predictable costs, reduced fluid-related downtime, extended fluid and component life, and greater confidence in elevator reliability across single buildings or entire portfolios.

Make Fluid Health Part of Your Elevator Reliability Strategy

Elevator reliability improves when fluid is treated as a managed asset rather than an invisible variable.

Covion helps organizations first restore fluid health through proven varnish and additive services, then protects that investment with continuous monitoring and long-term fluid quality agreements.

Covion Solutions

Safety and Reliability Begins with Fluid Health™

Click here to request the Hydraulic Elevator brochure or contact us to schedule an assessment of your hydraulic elevator systems.

Thanks to Covion Solutions for partnering with The University of Texas at Austin and providing Varnish Mitigation services on the elevator oil at McDonald Observatory. This process treats the oil to suspend the varnish in solution making it removable by filtration. When the oil is clean they refortified the oil with antioxidants and anti-wear ingredients. This process gives us a clean system with a fluid that keeps the varnish in suspension instead of letting it deposit on the surfaces of the piston, valve, and pump unit.

Our elevators run smoother, smell better, and last longer.

~ Matthew Pike, The University of Texas at Austin – Elevator Manager