Lukas HT 90 - User Manual

Questions and Answers

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Nicole DavidAug 13, 2025
What to do if the Lukas HT 90 Door Opening System cylinder does not extend?
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  Alex MedinaAug 13, 2025
  If the Lukas Door Opening System cylinder doesn't extend, extends too slowly, or stops while extending, it could be due to several reasons: * The hydraulic fluid level in the hand pump might be insufficient, in which case you should refill it. * The pressure relief valve on the hand pump might be open; ensure it is closed. * A loose hydraulic coupling could be the cause; tighten it. * Air might be present in the hydraulic system; vent the system according to section 6.1. * The cylinder piston may be jammed, in which case you should have the damage repaired by an authorized dealer, by personnel specially trained by LUKAS, or by LUKAS itself.
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Barbara WalshAug 16, 2025
What to do if Lukas Door Opening System cylinder extends, but does not maintain the pressure?
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  Grace McculloughAug 17, 2025
  If the Lukas Door Opening System cylinder extends but fails to maintain pressure, check for these potential issues: * A leaky connection could be the problem; tighten any loose connections. * Leaking seals might be the cause; have the leaks repaired by an authorized dealer, by personnel specially trained by LUKAS, or by LUKAS itself. * There could be an internal leakage in the hand pump; have the hand pump serviced by an authorized dealer, by personnel specially trained by LUKAS, or by LUKAS directly.
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fernando74Aug 20, 2025
What to do if Lukas HT 90 cylinder does not retract properly?
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  Christopher HenryAug 20, 2025
  If the Lukas Door Opening System cylinder does not retract, only partially retracts, or retracts more slowly than usual, consider the following possible causes: * The pressure relief valve on the hand pump might be partly closed; fully open it. * There might be too much hydraulic fluid in the hand pump; drain some of the fluid. * A hydraulic coupling could be loose; tighten it. * Air might be trapped in the hydraulic system; vent the system according to section 6.1. * The cylinder return spring might be broken, or there may be other damage to the cylinder; have the damage repaired by an authorized dealer, by personnel specially trained by LUKAS, or by LUKAS itself.
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Jordan MccormickAug 25, 2025
Why Lukas HT 90 doesn’t perform at its given power?
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  davidderekAug 25, 2025
  If the Lukas Door Opening System doesn’t perform at its given power, it might be due to insufficient hydraulic fluid in the hand pump. To resolve this, top up the hydraulic fluid and de-aerate the system.
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Steven AndersonAug 28, 2025
What to do if Lukas HT 90 Door Opening System hose line cannot be coupled?
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  Wendy GallagherAug 28, 2025
  If the hose line of your Lukas Door Opening System cannot be coupled, it could be due to: * Excessive pressure: Open the pressure relief valve on the hand pump. * A defective coupling: The coupling must be replaced immediately.
D
Donald FlynnAug 31, 2025
What to do if Lukas Door Opening System has a hydraulic fluid leak on the hose line?
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  Courtney FranklinSep 1, 2025
  If you observe a hydraulic fluid leak on the hose line or its inserts of the Lukas Door Opening System, this indicates a leak or possible damage. The suggested solution is to replace the hose line.
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Jesus GouldSep 5, 2025
How to fix damage on the surface of the Lukas HT 90 hose line?
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  sheila74Sep 5, 2025
  If there is damage on the surface of the Lukas Door Opening System hose line, this may be due to mechanical damage or contact with aggressive agents. In this case, replace the hose line.
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Mark MaynardSep 8, 2025
What causes a leak on the couplings of the Lukas HT 90 Door Opening System?
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  Robert EdwardsSep 8, 2025
  If there's a leak on the couplings of your Lukas Door Opening System, it's likely due to a defective coupling. The coupling must be replaced immediately.

Lukas HT 90 Specifications

General

Brand	Lukas
Model	HT 90
Category	Door Opening System
Language	English

Lukas HT 90 - User Manual

Table of Contents

Questions and Answers

Lukas HT 90 Specifications