HEATER ; ON / OFF INLINE CONTROL VALVE ON LATER Mk2 & Mk3 MODELS

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Right lads and Lassies ,

I have a wee observation about the later Robin / Rialto inline heater on/ off control .

CHECK THAT YOUR CONTROL VALVE IS FULLY OPEN .

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Picture 1 shows one model of control valve in the fully open position

LATER RIALTO / ROBIN Mk2 & Mk3 models ;

INLINE HEATER CONTROL SHOWING FULLY OPEN POSITION ;

Note that there is still a small pimple type bit still sticking into the bore ! !

NOTE ALSO THAT ON THIS TYPE OF CONTROL VALVE THAT

THE LEVER IS IN THE OPEN POSITION WHEN THE HEATER KNOB WOULD BE PULLED OUT .

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Picture 2 shows the other model of control valve in the fully open position

{ My personal preference is for this model of control valve }

THE FOLLOWING CONTROL VALVE IS OPERATED THE OPPOSITE WAY ! !

LATER RIALTO / ROBIN Mk2 & Mk3 models ;

INLINE HEATER CONTROL SHOWING FULLY OPEN POSITION ;

Note that there is still a small pimple type bit still sticking into the bore ! !

NOTE ALSO THAT ON THIS CONTROL VALVE THAT

THE LEVER IS IN THE OPEN POSITION WHEN THE HEATER KNOB WOULD BE FULLY PUSHED IN .

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Picture 3 shows the other model of control valve in the 1/4 closed position

MOVE THE LEVER TO JUST 1/4 OF THE TRAVEL

FROM THE OPEN POSITION TOWARDS THE FULLY CLOSED POSITION .

YOU WILL SEE THAT WHEN THE LEVER IS JUST 1/4 OFF THE OPEN POSITION ,

THAT THE INTERNAL VALVE IS NEARLY FULLY CLOSED .

LATER RIALTO / ROBIN Mk2 & Mk3 models ;

INLINE HEATER CONTROL SHOWING NOT EVEN QUARTER SHUT ;

NOTE ; INTERNAL PLATE NEARLY FULLY CLOSED

Pic 3

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Picture 4 shows the other model of control valve in the midway position

MOVE THE LEVER TO JUST 1/2 THE TRAVEL

FROM THE OPEN POSITION TOWARDS THE FULLY CLOSED POSITION .

YOU WILL SEE THAT WHEN THE LEVER IS JUST MIDWAY

THAT THE INTERNAL VALVE IS FULLY CLOSED .

LATER RIALTO / ROBIN Mk2 & Mk3 models ;

INLINE HEATER CONTROL SHOWING HALF WAY POSITION NOTE INTERNAL PLATE FULLY CLOSED

Pic 4

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CHECK THAT YOUR CONTROL VALVE IS FULLY OPEN .

OR EVEN BETTER WHILE YOU HAVE IT OFF ;

LAUNCH IT AS FAR AS IT WILL GO !!!

AND REPLACE WITH A STRAIGHT THROUGH HOSE .

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