Friedrich WS10B10 service manual Refrigeration System Hazards

Page 4

Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel, and sleeve on the room side of the air conditioning unit while cleaning.

Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is turned on, even after the exterior is dry.

Never operate the A/C unit with wet hands.

Use air conditioner on a single dedicated circuit within the specified amperage rating.

Use on a properly grounded outlet only.

Do not remove ground prong of plug.

Do not cut or modify the power supply cord.

Do not use extension cords with the unit.

Follow all safety precautions and use proper and adequate protective safety aids such as: gloves, goggles, clothing, adequately insulated tools, and testing equipment etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

REFRIGERATION SYSTEM HAZARDS:

Use approved standard refrigerant recovering procedures and equipment to relieve pressure before opening system for repair.

Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor to moderate injury.

Be extremely careful when using an oxy-acetylene torch. Direct contact with the torch’s flame or hot surfaces can cause serious burns.

Make sure to protect personal and surrounding property with fire proof materials.

Have a fire extinguisher at hand while using a torch.

Provide adequate ventilation to vent off toxic fumes, and work with a qualified assistant whenever possible.

Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks, flushing etc.

Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves, safety glasses, clothing etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

MECHANICAL HAZARDS:

Extreme care, proper judgment and all safety procedures must be followed when testing, troubleshooting, handling, or working around unit with moving and/or rotating parts.

Be careful when, handling and working around exposed edges and corners of sleeve, chassis, and other unit components especially the sharp fins of the indoor and outdoor coils.

Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

3

Image 4
Contents Thru-the-wall Table Of Contents Important Safety Information Your safety and the safety of others are very importantRefrigeration System Hazards Introduction Property Damage HazardsFriedrich wallmaster Model Number Code Sleeve / Chassis Dimensions Performance DataElectrical Data Plug/Outlet/Circuit RatingElectric Shock Hazard Fire HazardTo adjust fan speed Electronic Control OperationTo activate Smart FanWS cool-only models To activate Smart FanWY/WE heat-cool modelsChecking Room Temperature To set the timerTo Activate Money Saver WY/WE models To adjust temperature To set mode of operationTo start unit Error Code Mode Testing the Electronic ControlElectronic Control Panel Automatic component protectionError Codes Listing for WS Models Error Codes Listing for WE/WY ModelsReboot the Control Panel E7 Motor Operation E9 Heat Pump FailureComponents Testing Coil SensorsFAN Motor FAN Motor TestCapacitors Heating ElementDrain PAN Valve Capacitor Check with Capacitor AnalyzerRefrigeration System Sequence of Operation 410A Sealed System Repair Considerations Refrigeration system under high pressure410A Sealed Refrigeration System Repairs Equipment RequiredEquipment Must be Capable Risk of Electric ShockBurn Hazard Method Of Charging / RepairsFreeze Hazard Undercharged Refrigerant Systems Overcharged Refrigerant SystemsRestricted Refrigerant System Hermetic Components Check Metering DeviceCheck Valve Capillary Tube SystemsReversing Valve DESCRIPTION/OPERATION POSITION, 4 Port Reversing ValveTesting the Coil Checking the Reversing ValveTouch Test in Heating/Cooling Cycle Procedure For Changing Reversing ValveExplosion Hazard Compressor Checks Single Phase Resistance Test Ground TestRecommended procedure for compressor replacement Compressor ReplacementHigh Temperatures Rotary Compressor Special Troubleshooting and Service Routine Maintenance Front Cover Sleeve / DrainClearances Room AIR Conditioner Unit Performance Test Data Sheet Date Model SerialGeneral Troubleshooting Tips General Troubleshooting Tips Cooling only Room AIR Conditioners Troubleshooting Tips Possible Cause Possible Solution Problem Possible Cause Possible Action HEAT/COOL only Room AIR Conditioners Troubleshooting Tips Heat Pump Troubleshooting Troubleshooting Chart Heating Heat Pump Troubleshooting Chart CoolingProblem System Cools When Heating is Desired Electrical Troubleshooting Chart Heat PumpYES Normal Function of Valve Malfunction of ValvePage Page Page Installation Accessories Wall Preparation Mounting Hardware ProvidedDescription QTY Installation Requirements MECHANICALCUT/SEVER HazardhazardInstallation Instructions for Baffle Adapter KIT BAK MECHANICALCUT/SEVER HazardWallMaster Thru-the-Wall CUT/SEVERInstallation Instructions Mechanical Hazard MECHANICALCUT/SEVER HazardAssembly & Installation Instructions Installation Instructions Subbase for WS, WE & WY Models Installation Instructions Architectural Grille Model AG MECHANICALCUT/SEVER Hazard WALLMASTER≤ THRU-THE-WALL AIR Conditioners Limited Warranty Technical Support Contact Information Page Page Friedrich AIR Conditioning CO