21
12 MAINTENANCE
12.1 Adjustment of the mix temperature:
12.2 Removal and inspection of cartridge
When installed as a TMV3 application it is a requirement that the commissioning and maintenance
procedures, detailed under 9 & 10, be carried out.
4mm
retaining
screw
upper
stop ring
lock
shield
lower
stop ring
cartridge
stop face
Figure 20
Adjusting the pre-set
temperature
Figure 21
Exploded view showing
sequential cartridge
cover button
screw
sequential
cartridge
lock shield
36mm A/F
(deep socket
required)
• Note: Cartridge is factory pre-set at 40 ± 1°C *.
•
Prise out the cover button, then use a 4mm Allen key to
remove the screw.
•
Lift off the lock shield.
•
Remove both rotational stops from the spindle.
•
Turn the spindle to achieve a 40 ± 1°C * mixed.
(Clockwise to reduce and anti-clockwise to increase).
•
Refit both stop rings against the anti-clockwise rotation
stop face.
Note: 1. This is the normal maximum temperature range for
the product and as such there is a wide zone of spindle move-
ment that gives this mix temperature. For best performance
you should refit the stop at the first point of anticlockwise rota
-
tion that achieves the desired setting.
2. If you are unable to achieve 40 ± 1°C * and you have the
correct ?t’s it may be due to fine debris.
See 12.2 Removal
and inspection of cartridge.
•
Upon successful completion of the temperature adjustment,
conduct the
Cold Water Isolation (CWI) test (See 9.5)
to
ensure product is working properly.
•
Refit the lock shield and record the mix temperature.
After checking that supply conditions are within the specified
parameters (see table 1), if the fitting malfunctions or should the
test results fail to fall within the specified limits consider replacing
the cartridge with a new one.
See 12.3 Important notes on debris.
Isolate the fitting by rotating the integral isolating valves fully
clockwise.
Remove the lock shield as described in 12.1. Unscrew the cartridge
from the body with a 36mm a/f deep socket. Inspect cartridge for
damage.
Replace cartridge if necessary and reassemble cartridge into body
The replacement cartridge should be tightened to a torque of 15Nm.
(To re-secure the cartridge we recommend the use of Permabond
A011 or equivalent applied to the thread of the cartridge)
Replace the lock shield and reinstate the supplies.
• Redo the Cold Water Isolation (CWI) test (See 9.5).
•
Once satisfied with the CWI test, re-check and if necessary,
adjust the maximum mix temperature, see (See 12.1).
•
Record the mix temperature.
* See section 9.6: setting temperature
