Download Installation Instructions and User Guide

TO SERVICE THE VALVE:
SPARES
30.0°
• Isolate the hot and cold supply.
• Remove the valve to a clean working area.
In order to ensure that the Prestex Model P402
• Remove the protective cap.
thermostatic mixing valve continues to provide
• UnscrewInstructions
the headwork of the valve.
satisfactory service, only GENUINE Pegler spare
ng and Servicing
• Carefully remove the element and valve parts must be used.
ic water supplies
contain
will separate out when the water is
assembly
andcalcium
put towhich
one side.
ystem. The
degree and
scaling
may
varyguide
depending
• Remove
thespeed
main ofspring
and
flow
and on factors such as
tes, system
design, the
the water and the temperature to which the
carefully
puthardness
to one of
side.
2
ed.
• Inspect the components for contamination cale may over time form in the valve, particularly at the hot inlet. The formation
or damage.
may adversely affect the performance of the valve which will be detected during
or replace
asnecessary
necessaryto remove the valve for de-scaling1
e testing. •
If Clean
this occurs
it will be
•
Remove
the
two
o
rings
.
• Clean the valve body and headwork using a te the hot and
cold supply.
propriety
de-scaler
3
ove the valve
to a clean rinse
working
• Thoroughly
thearea.
body and headwork in ove the protective
cap.
clean water.
rew the headwork of the valve.
• Carefully fit new o rings from the service kit 4
5
fully remove the element and valve assembly and put to one side.
taking care to ensure they are not
ove the main spring and flow guide and carefully put to one side.
damagedforand
are correctly
7
ect the components
contamination
or located.
damage.
• Lubricate
the o rings with the lubricant n or replace
as necessary
4
provided.
ove the two
o rings
n the valve
using
propriety
de-scaler • body
Re-fitand
theheadwork
flow guide
anda spring
lubricating
oughly rinse
theflow
bodyguide
and headwork
in clean
water.
the
around the
greatest
fully fit new
o rings from
thethe
service
kit taking
care to ensure they are not
diameter
with
lubricant
provided
aged and•
are
correctly the
located.
Lubricate
shuttle valve with the 6
cate the o rings with the lubricant provided.
lubricant provided
t the flow guide and spring lubricating the flow guide around the greatest
Re-fit
the shuttle
eter with•
the
lubricant
providedvalve and element cate the assembly.
shuttle valve with the lubricant provided
• Re-fit
ensuring correct t the shuttle
valve the
and headwork
element assembly.
t the headwork
ensuring correct tightening
tightening
t the valve
• assembly
Re-fit the assembled valve and perform the er cleaning
the valve, and sequence.
replacing the o ring seals, the valve does not function
comissioning
ectly, it may be necessary to replace the thermal element.
• If after cleaning the valve, and replacing the Spare part order
Description
o ring seals, the valve does not function
code
w of TMV assembly
correctly, it may be necessary to replace the 1
854446
Protective cap
thermal element.
complete with
screw
Exploded view of
TMV assembly
2
854447
Hexagon key
3
854448
Service kit
4
854449 (15mm)
854450 (22mm)
Tailpiece
Strainer kit
5
854451 (15mm)
854452 (22mm)
Angle valve
strainer kit
6
854456 (15mm),
854457 (22mm)
Sealing washer
7
854455 (15mm),
817012 (22mm)
Wafer Strainer