In everyday site work dirt settles into buttons and gaps. Regular, gentle cleaning keeps the controls smooth and prevents faults. The key is that no moisture gets inside in the process.
Cleaning the housing and buttons
Remove the batteries first. Wipe the housing with a dry or only slightly damp cloth and work the gaps and button edges with a soft brush. Aggressive cleaners and solvents attack the plastic and labelling and do not belong on the device.
Battery compartment and contacts
Check the battery compartment at every battery change. Remove light deposits on the contacts dry, for example with a cloth. If you find greenish or white traces of corrosion, that points to ingress of moisture or leaked batteries, and the device should then be checked.
What you should definitely avoid
High-pressure cleaners, running water and immersion are taboo for the remote, as is compressed air aimed directly at the button gaps. All of that drives moisture and dirt further inside. For heavily soiled or sticky devices, professional cleaning as part of a refurbishment is the safe way.
Frequently asked questions
How often should I clean the ISAR 3?
In daily use a quick wipe after the shift and a more thorough clean at regular intervals are enough. The gentle method matters more than the frequency.
The buttons stick despite cleaning, what now?
If the dirt sits under the keypad membrane, external cleaning no longer helps. During refurbishment we open the device professionally and clean or renew the controls.
May I use disinfectant?
Sparingly on a cloth is possible, never spray directly. Make sure no liquid runs into gaps or the battery compartment.