711 32CONDUITFLOORDUCTAIR CLEANERMAINTENANCEFor maximum efficiency, your air filter should be in-spected once a month and changed if dirt loading isheavy. When changing is required, the following proce-dure should be used:s! CAUTIONThe fiber filter used in this compartment for aircleaning must be replaced every 90 days. Yourheating and cooling efficiency will decrease dueto insufficient air flow when filter becomes dirty.1. Remove door from air filter compartment by unscrew-ing the knob.2. Remove 5” filter and throw away.3. Replace 5” filter by sliding it into the compartment.(Note direction of air flow.)4. Replace door.When ordering repair parts, always give the followinginformation as shown in this list.1. The PART NUMBER2. The PART DESCRIPTION3. The MODEL NUMBER of the Air Filter Compart-mentAlways order by “PART NUMBER” . . .Not by “ITEM NUMBER”PARTS LIST FORAIR FILTER COMPARTMENTREPAIR and UPGRADE PARTSVerticalSectionWood BlockTape AllJointsPart NumberItemNo. Description 1000 1400 1600 20001 Compartment & Door ACB1000 ACB1400 ACB1600 ACB20002 Filters 5” FR1000 FR1400 FR1600 FR20003 Screw, Fastener F870-0026 F870-0026 F870-0026 F870-0026Figure 15Figure 16Description 1000 1400 1600 2000Electronic Air Cleaner Retrofit Kit ACR1000 ACR1400 ACR1600 ACR2000ELECTRONIC AIR CLEANER KITUPGRADE!