Greenheck Fan Part #470655 manual Excessive Noise or Vibration, Troubleshooting

Page 20

Troubleshooting

Excessive Noise or Vibration

Belts worn or loose?		Yes
Belts worn or loose?

	No
		No
Sheaves aligned?		No
Sheaves aligned?

	Yes
		Yes
Wheel(s) unbalanced?		Yes
Wheel(s) unbalanced?

	No

Bearings worn or need		Yes
lubrication?

	No
		Yes
Wheel(s) rubbing on inlet?		Yes
Wheel(s) rubbing on inlet?

	No
	No

Replace worn belts or tighten loose belts.

(Reference V-Belt Drives in the Maintenance section)

Align sheaves.

(Reference V-Belt Drives in the Maintenance section)

Clean and/or balance wheel(s).

Replace worn bearings or lubricate bearings as needed.

(Reference Bearings in the Maintenance section)

Adjust wheel(s) or inlet.

At this time noise and vibration should

be at acceptable levels.

20 DGX Industrial Space Heating

Image 20

Contents General Safety Information 2.Do not touch electrical switchesIf you smell gas 1.Open windows 3.Extinguish any open flameInspection and Maintenance during Storage ReceivingUnpacking HandlingTable of Contents Clearance to Combustibles / Service ClearancesInstallation TroubleshootingInstallation of Indoor Unit 1. Install Hangers2. Install Unit 3. Seal Wall OpeningInstallation of Arrangement DB / HZ 1.Install Curb and/or Equipment Supports2. Install Ductwork 4. Install UnitInstallation of Diffuser and Remote Panel TSCP 1. Install Diffuser2. Install TSCP AirflowInstallation of Electrical Wiring 1.Determine the Size of the Main Power Lines3.Connect the Main Power 4. Wire the Optional Convenience OutletInstallation of Gas Piping 2.Install Additional Regulator if Required1.Determine the Supply Gas Requirements 3. Connect the Supply Gas LineStart-Up- Blower 4. Pipe the Optional Vent Line5. Test the System for Leaks Pre Start-UpCheck5.Air Volume Measurement and Check 2.Check the Blower Rotation3. Check for Vibration 4. Motor CheckStart-UpDirect Gas Start-UpDirect Gas • 100% Outside Air1. Check the Supply Gas Pressure 4a. Set the Burner Air Pressure DifferentialStart-UpDirect Gas 50/50 Recirculation 4b. Set the Burner Air Pressure Differential5. Set the Low Fire Time Delay 6. Set the Maximum Firing RateStart-UpDirect Gas continued Regulators and Modulating Valves7. Set the Minimum Firing Rate 8. Set Daytime Temperature11.Flame Signal Check 9. Set Nighttime Temperature10.Program the 7 Day Time Clock Flame Signal CheckWithout 7-DayTimer 1.Switch S2 in Summer Mode2.Switch S2 in Winter Mode 3.Flame Safeguard FSG SequenceOperation - Electrical Sequence With 7-DayTimer 1.Switch S2 in Summer Mode2.Switch S2 in Winter Mode 3.Flame Safeguard FSG SequenceTroubleshooting Blower Does Not OperateTurn Supply Switch S2 On ResetMotor Overamps TroubleshootingReference Blower Start-Up- Step #5 Reference Blower Start-Up- Step #2Insufficient Airflow Too Much AirflowTroubleshooting Reference Filters in the Maintenance sectionReference Bearings in the Maintenance section Excessive Noise or VibrationTroubleshooting Heater Does Not Operate TroubleshootingTurn Heat Switch S4 On Wire Heat Switch S4Troubleshooting Uncross wires and reconnectIf problems remain, consult the factory Heater Does Not OperateTroubleshooting Adjust drives as neededHeater Does Not Operate Reference Direct Gas Start-Up- Step #11Maintenance - Routine Snow AccumulationMotors WheelsBearings FiltersMaintenance - Fall High LimitBurner Gas TrainDGX Industrial Space Heating ReferenceTypical Gas Train Layout 400 – 800 MBH Dirty Filter Switch Typical Control Center LayoutReference 28 DGX Industrial Space HeatingStart-UpChecklist Typical setting 5 minutes 45ºFTypical setting varies ReferenceMaintenance Log Maintenance Log Warranty Copyright 2012 Greenheck Fan Corporation