Mobile Diesel Heaters GRY-D / GRY-I Service Training Course 1 Rev. No. 3 January 24, 2011
GRY-I Indirect-fired Diesel Heaters GRY-I 15 WU GRYP 50 AP GRY-I 25 WU GRYP 90 AP GRY-I 40 WU GRYP 135 AP 2
GRY-D Direct-fired Diesel Heaters GRY-D 15 WU GRYP 50 GRY-D 20 HU GRYP 80 M GRY-D 20 WU GRYP 80 GRY-D 28 WU GRYP 100 GRY-D 40 WU GRYP 150 GRY-D 60 WU GRYP 210 PV 3
GRY-I General Assembly Exhaust Pipe Burner Head Compressor Motor Combustion Chamber Fan Fuel Tank 4
GRY-D General Assembly Outlet Flame Shield Burner Head Fan Compressor Combustion Chamber (open) Motor Fuel Tank 5
Fan Motor Assembly US Motors 70 W 3300 rpm 2 poles 10 µf GRY-D 15 100 W 3300 rpm 2 poles 10 µf GRY-D 20 150 W 3300 rpm 2 poles 20 µf GRY-D 28 GRY-I 15 250 W 3300 rpm 2 poles 30 µf GRY-D 40/60 GRY-I 25/40 6
The fuel circuit is composed of : fuel tank fuel suction hose fuel filter (air compressor) (air valve) (air hoses) nozzle holder (combustion head) nozzle Fuel Circuit Fuel Filter Nozzle Vent Pipe Nozzle Holder Burner Head Air GRY-D Models (except 15 and 60) Fuel Vent Pipe Nozzle Holder Fuel Filter Nozzle Nozzle Holder Burner Head Air Fuel Nozzle Burner Head GRY-D 15 WU GRY-I Models & GRY-D 60 Air Air Cutoff Valve Fuel Filter Fuel 7
Air Compressor Assembly Rear Guard Pressure Adjustment Valve Filter Casing Inlet Filter Pressure Port Cap Gasket Outlet Filter Cover Plate Stator Rotor Coupling Blade Air Line to Nozzle 8
Rotary Compressor Blade Stator Joint Rotor 9
Air compressor Inlet (Low Pressure) Filter 10
Air compressor Outlet (High Pressure) Filter 11
Burner Assembly (old and new design) Old New 12
Burner Assembly Swirl Blades Ignition Electrode Safety Thermostat Combustion Head Nozzle Holder Fuel Nozzle 13
Combustion Head (current design) Air Fuel O-ring Seal 14
Combustion Head (old design) Spring Washers Rubber Seal Washer 15
Nozzle & Nozzle Holder O-ring Fuel Inlet Air Inlet 16
STANDARD NOZZLE Pressurized FUEL Inlets Pressurized FUEL Inlets Nozzle Orifice Syphon Nozzle vs. Standard Nozzle Turbulence Chamber Tangential Channels SYPHON NOZZLE Pressurized AIR Inlets Pressurized AIR Inlets Fuel Inlet Nozzle Orifice Fuel Inlet Turbulence Chamber Tangential Channels 17
Burner Head on Combustion Chamber 18
GRY-D 15 Combustion Head Vent Pipe Nozzle Holder Fuel Filter Burner Head Nozzle Air Fuel 19
GRY-I Combustion chamber detail 20
GRY-I Fuel Filter and Air Valve Air Valve Air Valve Fuel Filter Vent Hole 21
Safety Controls Flame Sensor and Thermostat Flame Sensor (Photoresistor) Detects false flame signals or anticipated ignition Checks flame failure at ignition Checks flame failure during operation Safety thermostat (Limit Control, OPTIONAL for USA models) Limit Control Flame Sensor 22
Line Fuse 23
Safety Controls Air Pressure Switch 24
Principle of Operation GRY-D 25
Principle of Operation GRY-I 26
Ignition Sequence GRY-D 15/20/28/40 SW T1 T2 M M T PH F PS 6 sec SW M T PH F PS SWITCH MOTOR TRANSFORMER PHOTOCELL FLAME AIR PRESSURE SWITCH XX sec work end 0 sec T1 T2 START TIME WORK TIME 27
Ignition Sequence SW GRY-D 60 & GRY-I 15/25/40 T1 T2 T3 T4 M M T SV PH F PS SW M T SV PH F PS SWITCH MOTOR TRANSFORMER AIR SOLENOID VALVE PHOTOCELL FLAME AIR PRESSURE SWITCH 10 sec 16 sec 45 sec XX work end 0 sec T1 T2 T3 T4 PREVENTILATION TIME START TIME WORK TIME POST-VENTILATION TIME 28
Wiring Diagrams 29
Wiring Diagrams 30
GRY-D GRY-I Service Procedures 31
Rotor-Stator Clearances 32
Correct Stator vs. Rotor Positioning Stator Fixing Screws 0.5 mm (0.2 ) spacer plate 33
Air pressure adjustment Pressure Adjusting Screw Pressure Gauge ) 34
GRY-D Appearance of front disc BAD COMBUSTION GOOD COMBUSTION 35
Ignition Electrode Gap 36
Electronic control boards GRY-I GRY-D 37
Pressure Adjustment Valve Nut Screw Spring Ball Gasket 38
Air Ducting (Indirect Heaters only) GRY-I 25&40 WU GRY-I 15 WU Max Duct Lenght ~ 8 m (25 ft) Max Duct Lenght ~ 6 m (20 ft) 39
Draining Fuel from Tank 40
Fuel Suction Hose Hose Gasket Bottom Spacer (important!) 41
Tank Cap 42
Typical Air Temperatures on Direct and Indirect Heaters 1200 F 300 F 190 F 600 F 3ft 5ft 250 F 140 F 100 F 3ft 5ft 43
Service & Maintenance Equipment Measuring devices Electric Multimeter (V, A, ) PC Flame Sensor Tester Kit Pressure Gauge Kit (incl. hose and fitting) Smoke Index Tester 44