Manuals / Nortec / Household Appliance / Humidifier

Nortec NH Series Troubleshooting Nh Electrode Steam Humidifiers, A.Preparation, B.Starting Point

Models: NH Series

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1.TROUBLESHOOTING NH ELECTRODE STEAM HUMIDIFIERS

1.TROUBLESHOOTING NH ELECTRODE STEAM HUMIDIFIERS

A.PREPARATION

(1)Ensure the installation detail conform to installation requirements.

(2)Understanding the Principle of Operation and the software menus is an asset when troubleshooting. This information is found in chapter 10-20 Operation and can be elaborated on by your local representative.

(3)When contacting your local representative or NORTEC for troubleshooting assistance, please ensure the serial number has been obtained for reference purposes.

(4)Whenever the troubleshooting steps indicate a problem with the main pc-board, first check all connections at the main PCB (including the ribbon cable connections at the center of the main PCB) before ordering replacements.

B.STARTING POINT

(1)Table 1 checkpoints will allow for faster troubleshooting. Ensuring that all these steps are taken is good practice when beginning to troubleshoot the NH series humidifier. Check your symptom and verify all points before ordering any replacement parts or contacting your local representative. Use the wiring diagram when necessary for clarification.

NOTE

Wiring diagrams on unit supersedes diagrams in this manual.

WARNING

BE AWARE, WHEN TROUBLESHOOTING, THAT THE HUMIDIFIER IS

POWERED BY HIGH VOLTAGE AND FAMILIARITY WITH BOTH GOOD

PRACTICES AND WIRING OF THE HUMIDIFIER IS RECOMMENDED.

ANY TROUBLESHOOTING THAT REQUIRES OPENING THE CABINET

SHOULD BE DONE BY QUALIFIED PERSONNEL.

C.NHTC/NHPC

(1)The self-diagnostic system built into the NHTC is continually checking the status of the electrical circuits to the fill valve, drain valve, primary voltage contactor, high water sensor and steam cylinder. The modulating signals from external humidistat and reduced manual capacity settings are taken into consideration. When problem symptoms are found, the NHTC/NHPC will take self-corrective actions, if applicable. It will, if necessary, respond by shutting itself down. Table 3 describes some of the conditions the NH unit can detect and warn or protect itself against. Table 4 contains a definition of the terms used in this section.

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Nortec NH Series Troubleshooting Nh Electrode Steam Humidifiers, A.Preparation, B.Starting Point, Page 56, 10-40

Contents

NHTC / NHPC ELECTRODE STEAM HUMIDIFIER 2522381-CInstallation Manual NH SeriesTMCOPYRIGHT NOTICE SPECIFICATION LABEL LOCATIONPROPRIETARY NOTICE LIABILITY NOTICE2008-08-28 TABLE OF CONTENTS10-10INSTALLATION PROCEDURES 10-30MAINTENANCE PROCEDURES10-50TECHNICAL 10-40TROUBLESHOOTINGWARRANTY 2008-08-28LIST OF FIGURES 2008-08-28Figure 2008-08-28 LIST OF TABLES10-10INSTALLATION PROCEDURE 10-40TROUBLESHOOTING2008-08-28 10-00 INTRODUCTION 10-00Page 1 10-00 Figure 1. NHTCPage 2 A.RECEIVING & UNPACKING EQUIPMENT 1.PRE-INSTALLATIOND. ACCESSORIES BOX 2.PACKAGINGFigure 3. Distributor Box 10-00Figure 2. Humidifier Box Figure 4. SAM-eDistributor Box3.PREINSTALLATION EQUIPMENT VERIFICATION 10-00A.GENERAL Figure 6. Typical NHTC Installation Sheet 1 of 10-00Page 6 Figure 7. Typical NHTC Installation Sheet 2 of 10-00Page 7 THIS PAGE INTENTIONALLY LEFT BLANK 10-00Page 8 10-10 INSTALLATION 10-10Page 9 C.MOUNTING WITH WALL BRACKET 1.HUMIDIFIER INSTALLATIONA.LOCATION B.MOUNTING WITH KEYHOLESF. STEAM RUNS AND CONDENSATE RETURNS D.WATER SUPPLY LINEE.DRAIN LINE DRAIN WATER FROM HUMIDIFIER CAN BE VERY HOTFigure 3. Mounting with Mounting Bracket 10-10Figure 1. Clearances and Operating Conditions Figure 2. Mounting with Keyholes10-10 Figure 4. Drain Water and Supply ConnectionPage 13 Table 1. Maximum Recommended Length of Steam Line 10-10Page 15 10-10Page 16 10-10Dispersion Method 10-10Figure 7. Primary Voltage Supply Wiring 10-10Page 18 G.ELECTRICAL 1Primary Voltage Supply Wiring to HumidifierH.CONTROL WIRING bDemand Signal Controls InstallationPage 20 10-10Page 21 10-10Page 22 I.OPTIONAL OUTDOOR TEMPERATURE RESET FUNCTIONFigure 10. Setpoint Versus Outdoor Temperature 10-1010-10 J.HUMIDITY TRANSDUCER SIGNAL INSTALLATIONL.NORTEC ONLINE INSTALLATION K.NETWORKING NHTCPage 24 10-1010-10 Figure 12. Networking NHTCs OptionalPage 25 Page 26 10-1010-20 OPERATION 10-20Page 27 C.BASIC STEAM PRODUCTION METHOD 1.NHTCA.NHTC COMPONENTS B.HUMIDIFIER START-UP10-20 TableNHTC/NHPC Components Page 29Item Number Table 1. NHTC/NHPC Components contPage 30 10-20Page 31 Figure 5. Capacity Setting and Cylinder LifeFigure 3. Humidifier Start-Up Figure 4. Drain Rate Versus WaterFigure 6. Basic Steam Production Method Page 3210-20 G.SELF-HELP F.SOFTWARE FLOW CHART WITH DEFINITIONSE.SOFTWARE INITIAL SELF-TEST Table 2. Self-TestMessagesFigure 7. Software Flow Chart Sheet 1 of Page 3410-20 Figure 7. Software Flow Chart Sheet 2 of Page 3510-20 Figure 7. Software Flow Chart Sheet 3 of Page 3610-20 Figure 7. Software Flow Chart Sheet 4 of Page 3710-20 Figure 7. Software Flow Chart Sheet 5 of Page 3810-20 Figure 7. Software Flow Chart Sheet 6 of Page 3910-20 Figure 7. Software Flow Chart Sheet 7 of Page 4010-20 Page 41 Table 3. Signal Light StatusH.SYSTEM MESSAGES AND LIGHTS I.DOUBLE UNIT OPERATIONNHTC Display Message Table 4. Status Messages with LED StatePage 42 10-20Probable Cause Page 43Symptom Diagnosed 10-20C.BLOWER PACK OPERATION 2.STEAM DISTRIBUTIONA.STEAM DISTRIBUTOR OPERATION B.SAM-eOPERATION10-20 Figure 10. Blower Pack Operation and AdjustmentsFigure 9. SAM-eOperation Page 45B.DIGITAL TRANSDUCER OPERATION NORTEC DOES NOT RECOMMEND USING THE DRY RELAY3.CONTROLS AND REMOTE COMMUNICATION OPTIONAL A.DIGITAL CONTROL OPERATIONFigure 12. Difference from Setpoint in Relation to Demand SignalD.NORTEC LINKS 2 OPERATION E.NORTEC ONLINE OPERATIONPage 48 10-20THIS PAGE INTENTIONALLY LEFT BLANK 10-30 MAINTENANCE PROCEDURES 10-30Page 49 VOLTAGE COMPONENTS AND WIRING. ACCESS SHOULD BE MAINTENANCE PROCEDURESA. MAINTENANCE DISCONNECT MAIN POWER BEFORE ANY SERVICING10-30 D.COMPONENTS OF THE STEAM CYLINDERFigure 1. Cylinder Components Page 5110-30 E.HOW TO REMOVE THE STEAM CYLINDERFigure 2. Cylinder Removal Procedure Page 5210-30 F.MANDATORY CLEANING OF THE DRAIN VALVEFigure 3. Drain Valve Maintenance Page 5310-30 G.HOW TO INSTALL THE REPLACEMENT CYLINDERFigure 4. Cylinder Replacement Procedure Page 5410-40 TROUBLESHOOTING 10-40Page 55 SHOULD BE DONE BY QUALIFIED PERSONNEL C.NHTC/NHPC 1.TROUBLESHOOTING NH ELECTRODE STEAM HUMIDIFIERSA.PREPARATION B.STARTING POINTSystem Table 1. Troubleshooting SymptomsPage 57 10-40CAN REMAIN VERY HOT DURING THE TROUBLESHOOTING 2. TROUBLESHOOTING DISTRIBUTORS3.SAM-eTROUBLESHOOTING Table 2. Ensuring A Demand SignalA.PROCEDURE 4.BLOWER PACKS TROUBLESHOOTING5.DIGITAL ON/OFF HUMIDISTAT SENSOR CALIBRATION Page 5910-40 Table 3. NH System MessagesPage 60 Symptom DiagnosedCorrective Action Page 6110-40 Probable Cause10-40 Table 3. NH System Messages contPage 62 Symptom DiagnosedCorrective Action Page 6310-40 Probable CauseTable 3. NH System Messages cont Page 64Symptom Diagnosed 10-40Corrective Action Page 6510-40 Probable CauseA.PROCEDURE 6.0-10VDIGITAL HUMIDISTAT SENSOR CALIBRATIONTable 4. Term Definitions Page 6610-50 TECHNICAL 10-50Page 67 Page 68 1.WIRING AND TERMINALSTable 1. Controller and Sensor Specifications A.HUMIDIFIER CONTROL INFORMATION10-50 B.NH WIRINGFigure 1. NHTC/NHPC Double Unit Wiring Diagram Page 69Figure 2. NHTC/NHPC Wiring Diagram Page 7010-50 B. PRE-NORTECLINKS START-UPCHECKLIST A.PRE-NORTECONLINE START UP CHECKLIST WIRING3 Controls Wired 4 Start-UpProcedureUnit type: _______ C. HUMIDIFIER MANDATORY PRE-STARTUP CHECKLISTWIRING POWERPage 73 2.START-UPPROCEDURE1.PRELIMINARY RemarksPage 74 WHEN TO REPLACE THE CYLINDERCYLINDER REPLACEMENT PROCEDURE MANDATORY CLEANING OF THE DRAIN VALVE10-50 HOW TO INSTALL THE REPLACEMENT CYLINDEREXTENDED SHUTDOWN Page 75Figure 4. SAM-eExploded View and Spare Parts 3.SPARE PARTS AND EXPLODED VIEWSA.ASD, BSD, CSD DISTRIBUTOR B.SAM-eSPARE PARTSC.NH SERIES HUMIDIFIER SPARE PARTS Page 7710-50 Table 2. NHTC/NHPC Plumbing Part List Table 2. NHTC/NHPC Plumbing Part List cont 10-50 Page 7910-50 Page 8010-50 Page 81 Table 3. NHTC/NHPC Electrical Parts ListTable 3. NHTC/NHPC Electrical Parts List cont Page 8210-50 Page 83 10-50THIS PAGE INTENTIONALLY LEFT BLANK WARRANTY Walter Meier Climate USA Inc Cylinder Replacement Date MM/DD/YYYYU.S.A CANADA