FAQs
  • Does Hydraulic Oil Wear Out?

    In hydraulic elevators the base oil typically does not wear out.  The additive package may be depleted and some of the oil may oxidize, but the bulk of the oil can be scrubbed.

    Oil that oxidizes is no longer oil; it is chemically changed into oxidation byproducts which can be removed from the oil using depth filtration.  Due to the large volume of oil in hydraulic elevators, most of the oil is not oxidized because it does not encounter the heat zones in the pump, valve or elbows.

    2 people found this helpful.  Was this helpful to you? YesNo
  • Can you filter the AW additives from the oil?

    The AW additives are smaller than the filtration capacity of the scrubber.  However, depleted or neutralized additives will attach to metal or debris in the oil which are large enough to be filtered out of the oil by the scrubber.

    2 people found this helpful.  Was this helpful to you? YesNo
  • Does Biodegradable mean non-toxic?

    According to the EPA Animal fats and vegetable oils are regulated under 40 CFR 112, which has identical requirements for petroleum and non-petroleum oils.  Petroleum oils, vegetable oils, and animal fats share common physical properties and produce similar environmental effects.

    Source: www.epa.gov/emergency-response/vegetable-oils-and-animal-fats

    1 person found this helpful.  Was this helpful to you? YesNo
  • Can Varnish be filtered from the oil?

    Varnish in solution cannot be filtered when the oil is over 40°C (104°F); below 40°C the absorption capability of the cellulose insert can remove varnish.  Typically the reservoir temperatures decrease during off-peak hours enabling varnish removal during oil scrubbing.

    2 people found this helpful.  Was this helpful to you? YesNo
  • Should my elevator smell like hydraulic oil?

    The smell associated with hydraulic elevators is the result of acid in the oil due to oxidation.  Scrubbing the oil can remove the particles, varnish and reactive material that the acid is attached to.  When the acid is removed, the smell should go away.

    2 people found this helpful.  Was this helpful to you? YesNo
  • Why does the elevator feel “springy” at the top floor?

    Oil is incompressible compared to air.  A bouncy or springy feel, especially at the upper floors, is the result of air entrainment in the oil.  Water contamination contributes to air entrainment, so water removal is the solution to air entrainment.

    2 people found this helpful.  Was this helpful to you? YesNo
  • Can I use a transfer cart to scrub the oil?

    Transfer carts are designed to move oil quickly, but with speed comes a loss of filtration capability.  Typically transfer carts have nominal 10 micron to 15 micron filter.  The particles that are most likely to contaminate the valve on a hydraulic elevator are around 5 microns.  The Oil Scrubber™ has a 3 micron absolute filter and is over 98% efficient. 

    3 people found this helpful.  Was this helpful to you? YesNo