Panasonic 26PEK2U6 26PEK2U6 Service Manual - Page 90
Increasing the Fan Speed, Low Silhouette Ducted Type F1
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1-9. Increasing the Fan Speed 1. Specifications Low Silhouette Ducted (Type F1) If external static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed using the following procedure: (1) Remove 4 screws on the electrical component box and remove the cover plate. (2) Disconnect the fan motor sockets in the box. (3) Take out the jumper cable (sockets at both ends) clamped in the box. (4) Securely connect the jumper cable sockets between the disconnected fan motor sockets in step 2. (5) Place the cable neatly in the box and reinstall the cover plate. Fan motor Electrical component box Jumper cable Jumper cable Fan motor socket (At shipment) (Jumper cable installed) 2159_M_I Indoor Fan Performance 1 Type 26 Type 36 200 0.8 (inAq) Limit line External Static Pressure (Pa) (inAq) External Static Pressure 150 150 Limit line (Pa) 0.5 Limit line 100 0.4 100 0.3 HT 50 0.2 50 HH H 0.1 L 0 0 0 300 500 700 900 500 Air Flow (CFM) 1982_U_I NOTE HT : Using the booster cable H : At shipment Limit line 0.6 0.5 0.4 0.3 HT 0.2 HH H 0.1 L 1000 Air Flow (CFM) 0 1983_U_I How to read the diagram The vertical axis is the external static pressure (Pa) while the horizontal axis represents the AIR FLOW (CFM). The characteristic curves for "HT", "H", "M" and "L" fan speed control are shown. The nameplate values are shown based on the "H" air flow. For the Type 26, the air flow is 636 CFM, while the external static pressure is 49 Pa at "H" position. If external static pressure is too great (due to long extension of duct, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed as explained above. 1-82