Wascomat Junior W 75 Operating & Maintenance Manual

Also see for Giant W 185: Operating & maintenance manual

Contents

Wascomat Junior W 75 Operating & Maintenance Manual Manual pdf 33 page image

29Mechanical and electrical design401181381186391187Maintenance instructionsLimescale can block the hole in the valve diaph-ragm and interfere with the function of the valve.It is therefore advisable to dismantle and cleanthe valve at certain regular intervals. The fre-quency depends on operating conditions and thelevel of contamination in the water.Trouble shootingIf the valve does not open• Check that power is supplied to the coil.• Check the coil with an instrument to determinewhether there is a break or a short circuit.• Dismantle the valve (see below) and checkthe openings in the valve diaphragm.• Check the inlet strainer and clean as required.• Undo the coil and clean the surfaces of themagnetic core.If the valve does not close• Check that the coil is not live. The valve isnormally closed when the magnet is notenergised.• Check the return spring.• Check the diaphragm (pilot pressure opening).Dismantling the valve• Pull the coil straight upwards. Use a screwdri-ver if necessary to carefully undo the coil.• Use the tool supplied with the machine(attached to one of the hoses when themachine is delivered) to open the valvehousing. Slide the tool over the protrudingplastic sleeve to that the pegs on the toolengage the corresponding sockets in thevalve housing.• Use a spanner or a pair of pliers and unscrewthe upper part of the valve housing.Fig.38ventilating holepilot valveFig.39Fig.40