temp
This is your shower http://www.showerdoc.co.uk/shower-spares/gummers/1.html
The temperature adjusting screw is down the centre of the valve you will need a long thin screwdriver to adjust the temperature,
Remove the front cap turn the shower on to its hottest position next remove the knob retaining screw the water will run out when you remove this screw, don’t worry about this. Place the long thin screwdriver down the centre spindle and screw anti clock wise for hotter clock wise for cooler.
When the temperature is a little hotter than you would like then refit the screw and cap the valve should be just a little hotter than you require when it is set at its hottest position.
If this doesn’t work then you will have to strip the valve down give it a clean and lube and fit a seal kit or a thermostat and piston assembly.
| Part No. | GUM-SK1500-3 | Thermostat & Piston Various |
| Part No. | GUM-SK1500-1 | Service Kit TS1500/Multimix/Cascade |
This kit covers more than one valve so you will have seals left over!
Answered 11 years ago by Anonymous
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