16 Type 3 Fittings Maintenance Procedure - Inlet Valve The Type 3 valve is fitted with a filter which may need cleaning occasionally to ensure optimum water flow is maintained: 1. Turn off water supply to the valve 2. Lift off cistern lid 3. Unscrew front nut and remove arm and pressure chamber cover. Remove diaphragm. Remove the filter extractor key from the overhead discharge nozzle assembly. Insert the key through the centre of the support ring and seat. Pull key – the support ring, seat and filter will become free from the main body. Remove filter from seat and wash in clean water removing any debris that has been caught. Generally clean the inside of the valve body with clean water. 4. Reassemble I reverse order ensuring that the filter is pushed fully home in the seat. Make sure the monitoring pin in the diaphragm is free to move. Refit the pressure chamber assembly making sure the locating lug is positioned in the mating slot in the main body. Slide front nut over arm on to the main body and hand tighten. If the arm is removed for any reason, when refitting make sure that the small black seal is securely in place and that both location pegs are snapped into position. 5. Turn on the water supply and ensure the valve operates correctly. 6. Resect the float height to the required water level. 7. Carry out final installation checklist: i Check all moving components operate freely and that the inlet valve shuts off correctly. ii Check all connections are tightened correctly iiiCheck carefully for leaks iv If overflowing or poor filling occurs: lCheck float and arm move up and down freely and that water level is correct lCheck filter is free from debris lCheck restrictor has been fitted as detailed above Filter Extractor Key Overhead Discharge Nozzle Assembley Filter Diaphragm Assembley Diaphragm ‘O’ Ring Assembley Seat Pressure Chamber Cover Main Body Front Nut Support Seal Ring Arm Monitoring Pin Filler Tube Threaded Stem Note: Remove factory Base Thread Float fitted flow restrictor if inlet pressure is Rubber Washer below 25psi (1.5 Bar Back Nut Body or 50ft head) Flow Restrictor For Customer Service and Aftersales assistance, please contact Roca Head Office on 01530 830080