Windows care and maintenance

1. Maintenance intervals


WARNING

Potential danger to life, risk of injury and property damage.

  • Improperly performed repairs impair the safety of the windows and doors.
  • Always have repair work performed by a specialist company.

ATTENTION

Inadequate maintenance may cause property damage.

  • The maintenance intervals must be adapted to the respective ambient conditions. The maintenance intervals correspond to the current directives and represent a maximum time frame.
  • Determine the appropriate maintenance interval in accordance with the ambient conditions.

The maintenance interval for all tasks relating to the hardware components is annually at the least. A shorter interval should be used in marine or other corrosive environments and in areas prone to atmospheric fallout. In hospitals, schools and hotels, the maintenance interval is six-monthly.

Specialist companyEnd user
Cleaning
Clean hardware
Maintenance
Grease moving parts
Grease locking points
Performance test
Check that hardware components are fitted securely
Inspect hardware components for wear
Check that moving parts work properly
Check that locking points work properly
Repairs
Retighten fixing screws
Replace damaged parts

 = May be carried out by a specialist company or the end user

•  = Must be carried out by a specialist company

 2. Cleaning

Dirt, grime and airborne salt deposits are often capable of causing damage to the product’s surfaces and mechanism, including the cylinder barrel, and must be regularly removed.

The following cleaning process is recommended:

  • Cleaning should be done with a dilute solution of a mild liquid detergent in warm water. Avoid excessively hot solutions.
  • Use a soft bristle brush or similar to clean the surface. Do not use abrasive tools.
  • After cleaning, rinse surfaces thoroughly with fresh water.
  • Do not use strong solvent type cleaners on surfaces. Where it is necessary to remove materials from the surface (such as adhesives and a solvent is necessary) the weakest possible solvent should be used. Ensure the contact time for the solvent is kept to a minimum and that the solvent is thoroughly rinsed from the surface. A small test area should be checked prior to solvent cleaning to ensure that no damage to the film or colour change will occur.
  • Ensure cleaning fluids do not penetrate into the lock or cylinder. 

ATTENTION

Incompatible cleaning agents may cause property damage.

Incompatible cleaning agents may damage surfaces and destroy gaskets.

  • Only use cleaning and care agents that do not adversely affect the corrosion protection of the hardware components and gaskets.
  • Do not use aggressive or flammable liquids, acidic cleaners or abrasive cleaners.
  • Only use mild, pH-neutral cleaning agents that have been diluted.

 2.1 Cleaning the hardware

Clean the hardware:

  1. Clean deposits and contaminants off the hardware using a soft cloth.
  2. Grease moving parts and locking points after cleaning. see 3.”Maintenance” below
  3. Apply a thin protective film to the hardware, for example using a cloth soaked in oil.

 2.2 Cleaning windows or doors

Clean windows or balcony doors along with the hardware:

  1. Clean windows or balcony doors according to the manufacturer’s specifications.
  2. Clean deposits and contaminants off the hardware using a soft cloth.
  3. Grease moving parts and locking points after cleaning. see 3.”Maintenance” below

 3. Maintenance


ATTENTION

Using incorrect lubricants may cause property damage.

Substandard lubricants can prevent the hardware from working properly.

  • Use high-quality lubricants.
  • Only use resin-free and acid-free lubricants.

Lubricants may pollute the environment.

Leaking or excess lubricants may pollute the environment.

  • Remove any leaking or excess lubricants.
  • Dispose of lubricants separately and properly.

Observe the applicable directives and national laws.

All functional hardware components must be lubricated on a regular basis.

 3.1 Recommended lubricants and components to lubricate

Use the following lubricants:

– Roto NT grease

Lubricate the following components:

  1. Scissors and point of entry on the top guide blocks
  2. Pin guiding slot on the bogie and guide block point of entry
  3. Frame components and locking cams
  4. Bullet catch on the center lock

Greasing the hardware

Refer to the hardware overview for the lubrication points and grease the lubrication points.

Windows care and maintenance
[1] Grease

[A] Grease the guide track along its entire length

Lubricating Key cylinders

 

Key cylinders should be lubricated at least once a year or when there are signs of roughness when inserting or retracting the key. Remove any dirt, grime and salt deposits on and around the end of the cylinder barrel, and apply a small amount of lubricant to the key blade and insert the key into the lock barrel to maintain a smooth action. 

 4. Performance test


WARNING

Potential danger to life, risk of injury and property damage.

  • Improperly performed repairs impair the safety of the windows and doors.
  • Always have repair work performed by a specialist company.

 4.1 Check for proper operation

  1. Inspect hardware components for damage, deformation and a firm fit.
  2. Check that windows or doors run smoothly by opening and closing them.
  3. Check the window or door gaskets for elasticity and fit.
  4. Check closed windows or doors to ensure that they are leak-proof.

4.2 Remedy malfunctions 

  1. Have damaged components repaired by a specialist company.
  2. If windows or doors are not leak-proof, the hardware must be readjusted by specialist company.
  3. If the window or door scrapes against the frame when opened or closed, have the hardware adjusted by a specialist company.

 4.3 The specialist company must observe the following

Check that the hardware works smoothly, including the handle:

  1. Use a torque wrench.
  2. Improve the smooth operation of the hardware by greasing and readjusting.

 5. Repairs


ATTENTION

Surface treatments may cause property damage.

Surface treatments, such as painting and varnishing windows or doors, can damage hardware or prevent it from working properly.

  • Protect hardware against direct contact with the surface treatment.
  • Protect the hardware against contamination.

Repair work includes replacing and repairing components and is only necessary if components have become damaged after wear or as a result of external circumstances.

The following tasks must only be performed by a specialist company:

  • All adjustment work on the hardware
  • Replacing hardware or hardware components
  • Installing and removing windows or doors

The specialist company must observe the following:

  • The necessary repair work must be performed properly, according to generally recognized engineering practice and in accordance with the applicable regulations.
  • Makeshift repairs must not be performed on worn or damaged components.
  • Only original or approved spare parts, such as stainless steel screws, may be used in the course of repairs.