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AirComm Corporation Bell 407 Heating System Instructions for Continued Airworthiness OEM User Manual
AirComm Corporation Bell 407 Heating System Instructions for Continued Airworthiness OEM User Manual
Here you can view all the pages of manual AirComm Corporation Bell 407 Heating System Instructions for Continued Airworthiness OEM User Manual. The AirComm Corporation manuals for Heater are available online for free. You can easily download all the documents as PDF.
Page 31
HEATER SERVICE MANUAL 407H-200M-1 Revision D Page 6-4 Chapter 6 STANDARD PRACTICES (Continued) 3. REMOVAL, INSTALLATION / REPLACEMENT OF CABIN AFT HEATER EJECTOR ASSEMBLY (Figure 6.3 & 6.4) REMOVAL A. Remove inboard seat pan fasteners from S-9241EC-12 aft heater assembly supports. B. Remove S-9240EC-15 shield for RH side heater assembly removal. C. Position heater assembly...
Page 32
HEATER SERVICE MANUAL 407H-200M-1 Revision D Page 6-5 Chapter 6 STANDARD PRACTICES (Continued) 4. REMOVAL, INSTALLATION / REPLACEMENT OF HEATER SHUTOFF VALVE (Figure 6.5 & 6.6) REMOVAL A. Disconnect bleed air plumbing from shutoff valve. B. Loosen socket/plug clamp and disconnect electrical connection. C. Remove bracket mounting screws from engine deck and remove shutoff...
Page 33
HEATER SERVICE MANUAL 407H-200M-1 Revision D Page 6-6 Chapter 6 STANDARD PRACTICES (Continued) INSTALLATION/REPLACEMENT A. Install S-9420EC-12 bracket on replacement shutoff valve and secure bracket to engine deck with mounting screws. B. Connect electrical connection and tighten socket/plug clamp. C. Connect bleed air plumbing to shutoff valve. D. To ensure proper...
Page 34
HEATER SERVICE MANUAL 407H-200M-1 Revision D Page 6-7 Chapter 6 STANDARD PRACTICES (Continued) 6. REMOVAL, INSTALLATION / REPLACMENT OF WINDSHIELD DEFROSTER CONTROL VALVE. (Figure 6.7) REMOVAL A. Remove defroster control valve knob and center console cover. B. Disconnect bleed air plumbing from heater control valve. C. Remove two mounting screws and remove defroster...
Page 35
HEATER SERVICE MANUAL 407H-200M-1 Revision D Page 6-8 Chapter 6 STANDARD PRACTICES (Continued) 8. REMOVAL, CLEANING, INSTALLATION / REPLACEMENT OF DRAIN VALVE (Figure 3.7 & 6.9) REMOVAL A. Remove drain valve from ES49028-8/10 tee fitting. B. Remove S-9230EC-11 plug, 2-009 O-ring, S-9230EC-12 ball, and S-9230EC-13 spring from drain valve body. C. Inspect...
Page 36
HEATER SERVICE MANUAL 407H-200M-1 Revision D Page 6-9 Chapter 6 STANDARD PRACTICES (Continued) 9. REMOVAL, INSTALLATION / REPLACEMENT OF THE BLEED AIR PLUMBING (Figure 3.1) REMOVAL A. Cut attaching safety wire from B-Nuts at each end of bleed air plumbing to be removed. NOTE Always use a back-up wrench to hold the union, bulkhead fitting, or component that...
Page 37
HEATER SERVICE MANUAL 407H-200M-1 Revision D Page 6-10 Chapter 6 STANDARD PRACTICES (Continued) INSTALLATION / REPLACEMENT A. Install bleed air plumbing, secure clamps, and connect B-nuts. NOTE Always use a back-up wrench to hold the union, bulkhead fitting, or component that bleed air plumbing is being connected to. B. Apply Anti-Seize Ease Off 990 (MB1215), or equivalent...
Page 38
HEATER SERVICE MANUAL 407H-200M-1 Revision C Page 7-1 Chapter 7 TROUBLESHOOTING 1. SYSTEM TROUBLESHOOTING CHART Prior to troubleshooting a defective system, it is advisable to conduct a visual inspection for general condition, and obvious signs of damage or failure. The following matrix lists the easiest checks, and the most likely problems. Problem Probable Cause Solution No Heat Shutoff valve not open Operate heater power switch to HEATER position No Heat...