# Diode laser handpiece servicing — cleaning and resealing HTML source: [Diode laser handpiece servicing — cleaning and resealing](https://lasertechservice.pl/en/case-studies/diode-laser-handpiece-service-poznan/) Language: English Other language version: [Polski](https://lasertechservice.pl/realizacje/serwis-glowicy-lasera-diodowego-poznan/), [Русский](https://lasertechservice.pl/ru/realizacje/serwis-glowicy-lasera-diodowego-poznan/) > Diode laser handpiece servicing in Poznań. Removing contamination after loss of sealing, cleaning the optics and interior, and resealing the handpiece. Author: Laser Tech Service Diode laser for hair removal During servicing in Poznań, we worked on a diode laser handpiece that had lost its seal. Dirt and dust had begun entering the handpiece and settling around the optical system. ![Checking the housing joint on a laser handpiece with a failed seal](https://lasertechservice.pl/img/blog/serwis-glowicy-lasera/nieszczelnosc-manipuly-lasera.webp) - Equipment: Diode laser - Problem: Unsealed handpiece - Work scope: Cleaning and sealing - Location: Poznań [Laser handpiece and applicator refurbishment](https://lasertechservice.pl/en/services/laser-handpiece-repair/) — explore the service scope and quotation terms. ## A diode laser handpiece with a failed seal During a service visit to a customer in Poznań, we inspected the handpiece of a professional diode hair removal laser. The problem concerned the handpiece housing. Damage had compromised its seal, allowing dust and other fine contaminants inside. In equipment operating with high optical energy, even minor contamination inside the handpiece should not be ignored. ![Damaged diode laser handpiece with a failed seal](https://lasertechservice.pl/img/blog/serwis-glowicy-lasera/uszkodzona-glowica-lasera.webp) ## What did we find? After thorough inspection and dismantling, we confirmed that the handpiece interior needed cleaning. - loss of the housing's seal - contaminants entering the handpiece - deposits and dust inside the handpiece - contamination around the optical system - internal handpiece components requiring inspection ## Dismantling the handpiece and accessing the interior The service was carried out at the customer's premises in Poznań. The handpiece was dismantled to access its internal components and assess the extent of contamination thoroughly. This allowed cleaning of areas inaccessible during normal device use. ![Technician working on a laser handpiece at the customer's premises](https://lasertechservice.pl/img/blog/serwis-glowicy-lasera/serwis-glowicy-lasera-na-miejscu.webp) ![Inside a diode laser handpiece during servicing](https://lasertechservice.pl/img/blog/serwis-glowicy-lasera/wnetrze-glowicy-lasera.webp) ## Contamination inside the handpiece Opening the handpiece revealed contamination that had entered through the failed seal. In a correctly assembled handpiece, the housing helps limit dust and other contaminants reaching sensitive internal components. After any housing damage or loss of sealing, the condition inside the handpiece should therefore be checked. ## Optical system inspection and cleaning Components around the optical path required particular attention. Contamination on optical components can affect energy transmission and cause additional heating during laser operation. Before reassembling the handpiece, we therefore thoroughly removed contamination and inspected accessible components. ![Contamination in a diode laser handpiece optical system](https://lasertechservice.pl/img/blog/serwis-glowicy-lasera/zabrudzona-optyka-lasera.webp) ![Laser diode module during a service inspection](https://lasertechservice.pl/img/blog/serwis-glowicy-lasera/modul-diodowy-lasera.webp) ## Inspecting the laser diode module area During servicing, we also accessed the laser diode module area and components inside the handpiece. When sealing has failed, removing visible dust from the housing is not enough: areas deeper inside the handpiece also need inspection. ## What was done? The service included dismantling the handpiece, inspecting its interior, removing contamination and correctly securing the housing again. 01 ### Dismantling Dismantling the handpiece to access internal components. 02 ### Cleaning Thorough removal of accumulated dust and contamination inside the handpiece. 03 ### Inspection Checking the optical area, laser diode module and other accessible handpiece components. 04 ### Sealing Correct housing reassembly, restoration of the handpiece seal and securing the joint with suitable sealing material. ## The handpiece was cleaned and resealed After the work, accumulated contamination had been removed from the handpiece interior. After correctly reassembling the housing, we restored the handpiece seal and secured the joint with suitable sealing material. The handpiece was prepared for continued operation. ## Photographs of diode laser handpiece servicing ## Why is handpiece sealing so important? This case shows that a problem does not always begin with damage to the laser diode module itself. Sometimes the initial cause is a small housing leak through which contaminants gradually enter. We discuss this subject in more detail in our article on diode laser handpiece servicing. [Read the article on handpiece sealing and cleaning →](https://lasertechservice.pl/en/blog/diode-laser-handpiece-seals-optics/) ## Diode laser servicing in Poznań and throughout Poland Laser Tech Service provides diagnostics, repair and maintenance for professional diode lasers and other equipment used in aesthetic clinics. Our work includes handpieces and applicators, cooling systems, electronics, connections, optics and modules used in laser equipment. Our service centre is in Wrocław, and we handle requests and on-site visits throughout Poland, including Poznań. [Explore Laser Tech Service services →](https://lasertechservice.pl/en/services/) [Diode laser diagnostics →](https://lasertechservice.pl/en/services/diode-laser-diagnostics/) ## Service offerings - [Professional laser and aesthetic equipment servicing](https://lasertechservice.pl/en/services/) - [Service pricing](https://lasertechservice.pl/en/pricing/) - [Technical Service for Beauty Salon Chains and Aesthetic Clinics](https://lasertechservice.pl/en/services/service-for-salon-chains/) - [Laser handpiece and applicator refurbishment](https://lasertechservice.pl/en/services/laser-handpiece-repair/) - [Diode laser diagnostics](https://lasertechservice.pl/en/services/diode-laser-diagnostics/) ## Related articles - [Diode laser handpiece servicing – why are effective seals and clean optics so important?](https://lasertechservice.pl/en/blog/diode-laser-handpiece-seals-optics/)