Customer Maintenance & Log. Nothing in these Terms or in any Offer and/or Agreement shall relieve Customer from any obligation to perform normal, operational day-to-day maintenance and/or cleaning on the System or its products per Signify’s written instructions or operating manuals, electronic copies of which shall be provided to Customer by Signify. Customer shall not allow any party other than Signify, its Subcontractors or a Signify-approved independent, third party contractor to provide any maintenance to or make any alteration or modification on the System without Signify’s prior written and express approval. Customer shall maintain and update (as Signify may request) such maintenance logs and other records with respect to the System.