Page 65 of 80Table 13: Maintenance Guidelines, Cont.15.6 Condensate Drain Pan and DrainAssembly Check for blockages. Clean as necessary with mixture of 1/2 cup [0.1 L] bleach and 1gallon [1.9 L] warm water if signs of mold or algae are present.15.7 DampersDampers Check and clean blades.Damper Motor/Linkages Verify that all damper linkages move freely. Lubricate if necessary.15.8 Electric Heater Wiring and Wiring ConnectionsAssemblyCheck all wiring connections. Tighten as necessary.Check internal wiring. Replace as necessary with type THHN 221°F (105°C), 600V, 16gauge wire or equivalent.Control Panel Check heater control panel for dust/dirt and moisture. Clean as necessary.Heating ElementsCheck heating elements for dust/dirt build-up and/or broken elements. Replaceelements and /or clean elements with low pressure air as necessary.Check element male/female chassis insulators for breaks and/or cracks. Replaceas necessary.Check element support frame insulators. Replace missing or broken insulatorsas necessary.15.9 FiltersAssemblies Filters should be checked for dirt restriction on a monthly basis (or as required).Replace filters with filters of equal specification when they appear dirty.RC/FC Series Installation, Operation, and Maintenance Manual