Service/Maintenance9 NEWTEAM 973-T/974-T SHOWER VALVEService/MaintenanceIf your Thermostatic Mixing Valve fails to operate it could be the result ofincorrect installation. Please refer to installation and site requirements.If the valve has operated correctly for a time, but no longer performsacceptably, it may require servicing/cleaning. Proceed as follows;1) Isolate hot and cold supplies.2) Remove the headwork assembly and spline adaptor if applicable3) Unscrew the cartridge (standard right hand thread).4) Remove the thermostat, distributor assembly and spring.5) Remove all visible ‘o’ rings and washers from the body.NOTE: Do not adjust the bottom cap setting.29mm spanner required (standard thread).Ensure that you DO NOT damage the valve, pipe work or backplate whenundoing the headwork.Ensure that you don’t damage the faces of the piston.M5 GRUB SCREWCartridge AssemblyKnob & SleeveThermostat& Piston AssemblyConcealed ElbowAssemblyNote :-Do Not RemoveIndice To RemoveLeverConcealingPlate & SealsExposed ElbowAssembly FlowLimiterKitIllustration Shows AConcealed BackplateFig 7 - Service and Maintenance