IMAGE BELOW SHOWS SYSTEM IN ‘ON’ POSITION- (WATER FLOWING THROUGH THE SYSTEM)
THERE ARE 3 VALVES IN THE SYSTEM. VALVE 1 AND 2 ARE IN ‘OPEN’ POSITION AND VALVE 3 IS IN ‘CLOSED’ POSITION.
STEP 1- OPEN THE TOP LID OF THE SYSTEM. TURN THE 3 BYPASS VALVES 90 DEGREES. TURN VALVE 1 AND 2 TO CLOSED POSITION AND TURN VALVE 3 TO OPEN POSITION. THIS PUTS THE SYSTEM IN BYPASS.
ALTERNATIVELY, YOU CAN TURN THE MAINS WATER TAP OFF AND OPEN A TAP INSIDE THE HOUSE TO RELEASE ANY TRAPPED WATER IN THE PIPES. THIS CAN BE DONE INSTEAD OF BYPASSING THE SYSTEM.
STEP 2- PRESS THE RED BUTTONS ON TOP OF THE HEADS TO RELEASE PRESSURE & TRAPPED WATER.
STEP 3- OPEN THE DOOR AT THE FRONT OF THE SYSTEM. USING THE WRENCH PROVIDED, UNSCREW THE WHITE HOUSINGS BY TURNING THEM IN CLOCKWISE DIRECTION.
STEP 4- REMOVE AND DISCARD OLD CARTRIDGES ANDINSERT NEW CARTRIDGES IN THE HOUSINGS. THESE ARE NUMBERED 1 TO 3 AND SEQUENCE IS LEFT TO RIGHT.
STEP 5- CAREFULLY REPLACE THE O-RINGS, AVOIDING TWISTS. IF AVAILABLE, LUBRICATE THE O-RING WITH A HANDY LUBRICANT (GREASE/ VASELINE / COOKING OIL) BEFORE REPLACING.
STEP 6- USING THE WRENCH PROVIDED, SCREW THE HOUSINGS BACK ONE BY ONE IN THE COUNTER-CLOCKWISE MANNER.
STEP 7- IF BY-PASSED, RETURN THE SYSTEM TO WORKING CONDITION BY TURNING THE VALVES 90 DEGREES AGAIN.
TURN VALVE 1 AND 2 TO ‘OPEN’ POSITION AND TURN VALVE 3 TO ‘CLOSED’ POSITION.
IF THE MAINS WATER TAP WAS TURNED OFF, OPEN IT BACK AGAIN.
STEP 8- TURN ON A FEW TAPS INSIDE THE HOUSE AND LET WATER RUN FOR 10 MINUTES TO FLUSH THE NEW CARTRIDGES.