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M A I N T E N A N C E
Use caution with skin contact to hot water to
reduce the risk of scald injury. Before servicing the
valve, turn the water off using the stops on the iBox
Universal Plus or at the main shutoff.
⁄ Inspect the check valves at least once per year.
Replace if dirty or worn.
⁄ Should the volume of water decrease over time,
inspect and clean the filters on the thermostatic
cartridge. After reassembly, set the high tempera-
ture limit stop and justify the handle.
T R O U B L E S H O O T I N G
SY MP TO M
Insufficient water
Crossflow: hot water being forced
into cold water supply, or vice versa,
when mixer is closed
Output temperature does not cor-
respond with temperature set
Output temperature is erratic
Output water is all hot or all cold
-- doesn't mix (new installation)
Safety stop override button not
operating
⁄ To prolong the life of the themostatic cartridge,
If the shower will not be used for an
⁄ If you have questions, please contact Hansgrohe
P OS S I B L E C AUS E
Supply pressure inadequate
Thermostatic cartridge filter dirty
Showerhead screen washer or filter
gasket dirty
Check valves dirty or worn
Handle not justified
Temperature regulator dirty or worn
Rough valve is cross connected -- hot
on right and cold on left
Spring defective
Button dirty
regularly run it through its full range of
temperatures.
extended period of time, turn off the water
to the shower valve by using the service
stops in the iBox Universal Plus rough, or
at the main shut off.
Customer Service at 800 334 0455.
SUGG ESTED ACTION
Check water pressure (If a pump has
been installed check to see if the pump
is working).
Clean filters
Clean screen washer or filter gasket
Clean check valves, replace if
necessary
Justify the handle
Clean thermostatic cartridge filters
Replace thermostatic cartridge
Remove function block, turn it 180°
and reinstall.
Clean spring and/or button, replace
if necessary
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