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ServiceTraining Course

Mobile Diesel Heaters GRY-D / GRY-I

Rev. No. 3 January 24, 2011

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GRY-I Indirect-fired Diesel Heaters

• GRY-I 15 WE GRYP 15 AP• GRY-I 25 WE GRYP 25 AP• GRY-I 40 WE GRYP 40 AP

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GRY-D Direct-fired Diesel Heaters

• GRY-D 15 WE GRYP 15• GRY-D 20 HE GRYP 20 M• GRY-D 20 WE GRYP 20• GRY-D 28 WE GRYP 28• GRY-D 40 WE GRYP 40• GRY-D 60 WE GRYP 60 PV

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GRY-I General Assembly

Combustion Chamber

Fuel Tank

Burner Head

Motor

CompressorExhaust Pipe

Fan

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GRY-DGeneral Assembly

Combustion Chamber (open)

Fuel Tank

Outlet Flame Shield

Burner Head

Motor

Compressor

Fan

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Fan Motor Assembly

Motors

70 W 2800 rpm 2 poles GRY-D 15100 W 2800 rpm 2 poles GRY-D 20150 W 2800 rpm 2 poles GRY-D 28 GRY-I 15 250 W 2800 rpm 2 poles GRY-D 40/60 GRY-I 25/40

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Fuel Circuit The fuel circuit is composed of : fuel tank fuel suction hose fuel filter (air compressor) (air valve) (air hoses) nozzle holder (combustion head) nozzle

GRY-D 15 WU GRY-I Models & GRY-D 60

GRY-D Models (except 15 and 60)

Nozzle Holder

Nozzle Holder

Nozzle

Nozzle

Nozzle

Nozzle Holder

Air Fuel

Air Fuel

BurnerHead

BurnerHead

BurnerHead

Fuel

AirAir Cutoff Valve

FuelFilter

FuelFilter

FuelFilter

VentPipe

VentPipe

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Air Compressor Assembly

Pressure Adjustment Valve

Inlet Filter

Gasket

Cover Plate

Stator

Rotor

BladeCouplingAir Line to Nozzle

PressurePort Cap

Filter Casing

Outlet Filter

Rear Guard

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Rotary Compressor

Stator RotorBlade Joint

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Air compressorInlet (Low Pressure) Filter

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Air compressorOutlet (High Pressure) Filter

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Burner Assembly(old and new design)

Old

New

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Burner AssemblyIgnition Electrode

Combustion Head

Fuel Nozzle

NozzleHolder

Safety Thermostat

SwirlBlades

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Combustion Head (current design)

Air

Fuel

O-ring Seal

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SpringWashers

Rubber Seal

Washer

Combustion Head (old design)

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Nozzle & Nozzle Holder

O-ring

Fuel Inlet

Air Inlet

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Syphon Nozzle

vs.Standard

Nozzle

STANDARD NOZZLE

Pressurized FUEL Inlets

Turbulence Chamber

SYPHON NOZZLE

Tangential Channels

Pressurized FUEL InletsNozzle Orifice

Pressurized AIR Inlets

Turbulence ChamberTangential Channels

Fuel InletPressurized AIR Inlets Nozzle Orifice

Fuel Inlet

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Burner Head on Combustion Chamber

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GRY-D 15 Combustion Head

Nozzle Holder

Nozzle AirFuel

BurnerHead

FuelFilter

VentPipe

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GRY-I Combustion chamber detail

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GRY-I Fuel Filter and Air Valve

Fuel Filter

Air Valve

Vent Hole

Air Valve

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Safety ControlsFlame 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)

Flame Sensor

Limit Control

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Line Fuse

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Principle of OperationGRY-D

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Principle of OperationGRY-I

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Ignition SequenceGRY-D 15/20/28/40

SW

M

T

PH

F

T1 T2

PS6 sec

M

0 secXX secwork endSW

MT

SWITCHMOTORTRANSFORMER

PH PHOTOCELLF FLAMEPS AIR PRESSURE SWITCH

T1 START TIMET2 WORK TIME

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Ignition Sequence GRY-D 60 & GRY-I 15/25/40

SW

M

T

PH

SV

F

T1 T2 T3 T4

PS10 sec 16 sec 45 sec

M

0 secXXwork endSW

MT

SWITCHMOTORTRANSFORMER

SV AIR SOLENOID VALVEPH PHOTOCELLF FLAMEPS AIR PRESSURE SWITCH

T1 PREVENTILATION TIMET2 START TIMET3 WORK TIMET4 POST-VENTILATION TIME

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Wiring Diagrams

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Wiring Diagrams

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GRY-D GRY-IService

Procedures

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Rotor-Stator Clearances

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Correct Stator vs. Rotor Positioning

0.5 mm (0.2”) spacer plate

Stator Fixing Screws

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Air pressure adjustment

Pressure Gauge

Pressure Adjusting Screw

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GRY-DAppearance of front disc

BAD COMBUSTION GOOD COMBUSTION

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Ignition Electrode Gap

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Electronic control boards

GRY-D

GRY-I

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Pressure Adjustment Valve

Nut

ScrewSpring

Ball

Gasket

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Air Ducting(Indirect Heaters only)

GRY-I 25&40 WU Max Duct Lenght ~ 8 m (25 ft)GRY-I 15 WU Max Duct Lenght ~ 6 m (20 ft)

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Draining Fuel from Tank

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Fuel Suction Hose

Bottom Spacer (important!)

Hose

Gasket

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Tank Cap

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Typical Air Temperatureson Direct and Indirect Heaters

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Service & Maintenance Equipment

Measuring devicesElectric Multimeter (V, A, )

PC Flame Sensor Tester Kit

Pressure Gauge Kit (incl. hose and fitting)

Smoke Index Tester