How to clean a window-type inverter aircon unit

Brand: Kolin Model: KAG-75WCINV As per Kolin Philippines, having your unit cleaned or repaired by others aside from their accredited service centers will void the unit's 1 year warranty. To schedule your unit for a service, you may contact Kolin at 09178118982 or through their FB Messenger- Kolin Philippines. Kolin will ask for several details (your contact details, aircon model, serial number, date of purchase, dealer, etc). You will receive a response from Kolin with your tentative cleaning schedule, reference number and assigned technician / service center. The assigned technician will contact you also. The service center / technician assigned to clean the unit was LJRM Trading and Interior Fitout Services. They clean and repair all brands and types of aircon units. Below are their address and contact details: 19 Lopez Jaena St. Tañong, Marikina 09973692420 / 09193804474 / 4759951 technicians: Gideon and Arnel The unit was cleaned after 6 months of purchase and use. As per Kolin, they no longer provide free cleaning to units purchased in 2022. Cleaning fee was 800 pesos. LJRM issued an official receipt and a service report. Kolin Philippines was responsive to inquiries and request. LJRM technicians were courteous and professional. Music by Citrus Avenue - Espresso Sun - https://thmatc.co/?l=F38F0992