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 temperature
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
24
⁄ To prolong the life of the themostatic cartridge, regu-
If the shower will not be used for an ex-
⁄ 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 — Clean thermostatic cartridge filters
— Rough valve is cross connected --
hot on right and cold on left
— Spring defective
— Button dirty
larly run it through its full range of temperatures.
tended 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.
S UGG ESTE D 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 - see page 27.
— Justify the handle
— Replace thermostatic cartridge
— Remove function block, turn it 180°
and reinstall
— Clean spring and/or button,
replace if necessary
