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Roberts Gorden DAT90, DAT75, DAT100, DAT115 service manual Fan Removal and Replacement

Models: DAT115 DAT100 DAT90 DAT75

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16.8.1 Fan Removal and Replacement

SECTION 16: REMOVAL AND REPLACEMENT PARTS

16.8.1 Fan Removal and Replacement

Fan Plate
Fan Outlet Flange
Securing Screws
		Fan Mounting
		Brackets
		(re-use on new fan)
		Bracket Screws
		(re-use on new fan)
		Fan Foot
		Screws
Description	Part Number
Torin Fan DDC 270-270	A047
Torin Fan DDC 241-241	A049	Mounting Rail
		Mounting Rail

1.Remove motor leaving the pulley in place. See Page 42, Section 16.8.

2.Remove screws securing the fan outlet flange to the fan panel. (captive nuts)

3.Remove nuts and bolts securing the fan feet to the mounting brackets.

4.Slide the fan out.

(fan is heavy, may need two people)

5.Remove the fan mounting brackets from the fan. Retain components to fit to new fan.

6.Remove the fan pulley by using a hexagonal key to remove the taper lock screws. Use one of these screws to fit into the centre jacking screw and tighten into this position to separate the taper lock bush and the pulley.

7.Refit the components above to the new fan and refit in reverse order.

8.Check belt alignment and tension.

9.Check fan rotation is correct.

16.9Combination Fan/Limit Thermostat 16.9.1 Removal and Replacement

1. Remove wires.

2. Remove the mounting screws.

3.Fit a new thermostat ensuring that the correct temperature setting and type are selected. See Page 7, Section 4.3 through Page 8, Figure 4.4.

4.Reconnect wires and test operation.

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Roberts Gorden DAT90, DAT75, DAT100, DAT115 service manual Fan Removal and Replacement

Contents

DO NOT use electrical switches FOR YOUR SAFETYmanual thoroughly before installing or servicing DualAirPage SECTION 1 Heater Safety TABLE OF CONTENTSSECTION 2 Installer Responsibility SECTION 4 SpecificationsPage TABLE OF FIGURES Page Product Approval SECTION 2 INSTALLER RESPONSIBILITY SECTION 1 HEATER SAFETY2.1 Clearances to Combustibles 2.2 Corrosive Chemicals3.2Location and Suspension All models 3.3 Minimum Required Installation Clearances3.4 Clearances to Combustibles 3.5 Ventilation80 cm is necessary to service heater Front View SECTION 4 SPECIFICATIONS 4.1 DATFront View Left Version Rear View4.2 General Technical Data Table 4.3Technical Data Table - Heater Section Appliance Category II 2H/L 3B/P 4.4.2 DAT100 and 115 4 kW motor 5.2 Handling SECTION 5 HEATER INSTALLATION 5.1 General5.3 Shelf Mounting and Suspension Figure 3 Suspension Methods6.3 Type B22 Appliance terminal. See Page 12, FigureSee Page 10, Figure 4 through Page 12, Figure 6.3.1 Air Intake Terminal CoverFigure 6 Alternate Figure 5 Control Section & Upper PanelMasterflash Roof TerminalMetal Sleeve 25 mm air gap to7.2 Open Flued Installation 7.1 Room Sealed InstallationSECTION 7 AIR SUPPLY 7.3 Building Ventilationduct resistance and design. Tel +44 Department for recommendations regarding7700 Figure 10 Ducting9.1 Connections SECTION 9 GAS PIPING10.2 Remote Control SECTION 10 WIRING AND ELECTRICAL INFORMATION10.1 Electrical Supply 10.2.1 Remote Frost ThermostatRelay/Function TerminalOperation NumberSee Page 20, Section 10.4 DAT Wiring DiagramWIRING SITESite wiring connections shown 10.5 DAT Wiring DiagramSECTION 10 WIRING AND ELECTRICAL INFORMATION 10.6 DAT Site Connections at Main Circuit Board Cooling Coils/Condensers SECTION 11 COMMISSIONING Gas Fired Heater11.1 Pre-CommissionChecks 11.1.1 LouvresFigure 13 Modureg Gas Valve Figure 12 Automatic Burner Control Box Sequence11.5 Combustion Testing two adjustments. See Page 22, Figure11.4.2 Commissioning the Gas Valves See Page 22, Figure11.6 Turning Off the DualAir Unit Pressure Switch11.7 External Controls 11.8 Complete the Commissioning12.2.1 Warning Lights 12.2 Heater OperationFigure 14 Heater Operating Sequence 12.3 Common User Controls12.6Simple Fault Finding 12.3.3 Burner Lockout Reset Button12.6.1 Simple Fault Finding burner faults 12.4 Cooling Section Operation3.DO NOT use electrical switches FOR YOUR SAFETYIf you smell gas 1.Open windows13.3 Fan/Motor Assembly Maintenance 13.2 Burner Maintenance13.4 Heat Exchanger Maintenance SECTION 13 SERVICING 13.1 Servicing InstructionsReplace faulty gas valves with genuine 13.5 Gas Control Valve MaintenanceROBERTS GORDON replacement parts 13.6 Flue Fan Do not repair or disassemble on site14.2 Burner Conversion SECTION 14 CONVERSION BETWEEN GASES 14.1 General14.3 Gas Valves Explosion Hazard SECTION 15 TROUBLESHOOTING 15.1 GeneralStart TROUBLESHOOT ENDSvalues, then reverse the test leads START 15.3 Troubleshooting for Flame Supervision SystemTROUBLESHOOT ENDS 15.5 Troubleshooting for Main Fan 15.4 Troubleshooting for Solenoid ValvesSTART STARTSECTION 15 TROUBLESHOOTING 15.6 Troubleshooting for Fan ContactorSTART TROUBLESHOOT ENDS16.1.1 Gas Valve Replacement - all models SECTION 16 REMOVAL AND REPLACEMENT PARTSBurner Components See Page 5, Section16.2.1 Burner Injectors 16.2 Burner CompartmentEnsure gas tight fitting of injectors Ensure correct alignment with burners16.3 Ignition Electrode and Flame Probe 16.4 Flue Fan See Page 21, Section 16.5 Heater Pressure SwitchCoil Pressure Switch 16.6.2 Pressure SwitchesFilter Pressure Switch Figure 18 Cooling Coil Safety Devices16.7.1 S4563C 16.7 Ignition Control16.8 Fan Motor Removal 16.8.1 Fan Removal and Replacement Fire Hazard Figure 19 Combination Fan/Limit ThermostatHeat exchanger damage may result BREAK-OFFLINK MUST BE REMOVEDPage close to heater Fire Hazardinjury or property damage OPERATING INSTRUCTIONS