8 If the module surface becomes dirty, it mayreduce output power. It is recommended to clean the surface ofthe module with water and a soft cloth orsponge, twice or more per year. A mild non-abrasive detergent may beapplied for persistent dirt. It is also recommended to inspect theelectrical and mechanical connectionsannually. If you need electrical or mechanicalinspection or maintenance, it isrecommended to have a licensed authorizedprofessional carry out the inspection ormaintenance to avoid the hazards of electricshock or injury.Disclaimer of Liability Panasonic does not assume responsibilityand expressly disclaims liability for loss,damage, or expense arising out of, or inany way connected with installation,operation, use, or maintenance by usingthis manual. Panasonic assumes no responsibility for anyinfringement of patents or other rights ofthird parties, which may result from use ofmodules. No license is granted by implication orunder any patent or patent rights. Theinformation in this manual is believed to bereliable, but does not constitute anexpressed and/or implied warranty. The return of any modules will not beaccepted by Panasonic unless prior writtenauthorization has been given by Panasonic. As part of Panasonic’s policy of continuousimprovement, Panasonic reserves the rightto change product specifications at any timewithout prior notice.Customer Services For further information, please visithttp://panasonic.net/energy/solar/ orcontact your Panasonic AuthorizedRepresentative.Figure 4.2 Junction BoxCableNegative ( - ) Positive ( + )Figure 4.1 ConnectorsOption:Safety lock clipConnectorMC TM PlugCableNegative ( - ) Positive ( + )