Some maintenance advices for S&A water chillers as belows: Please clean the filter gauze every 15-30 days to keep good cooling performance, for serious dirt, please clean up with clear water or neutral cleanser, reinstall the strainer after dry. Please check and clean up the liquid filter regularly to avoid flow rate too low and cooling low pressure alarm. Since January 2016, the warranty of S&A chiller have extended to 2 years. Thanks for using S&A chiller. CONTACT S&A TEL:+86-20-89301885, FAX:+86-20-84309967 SKYPE: teyuchiller Email:marketing@teyu.com.cn Website: http://www.teyuchiller.com