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1058907-W2-J
Cleaning/Renewal of Parts
13.
Internal parts can be cleaned using a mild proprietary inhibited scale solvent,
e.g. domestic kettle descalent. After descaling, always rinse parts thoroughly
in clean water before refitting.
Note!
Make sure that components are cleaned carefully and not damaged in
any way. Do not use any abrasive material on component surfaces.
14.
Inspect the shuttle/thermostat assembly for signs of damage or leakage; renew
the assembly if in any doubt of the condition. Check the overload spring in the
shuttle/thermostat assembly for free movement by compressing it several times;
renew the assembly if the components are sticking.
Note!
The shuttle/thermostat cannot be tested individually, its condition
can only be assessed as part of the performance check; refer to section:
'Commissioning'
.
15.
Examine all seals (particularly the separator 'O' seal, the cold seat 'O' seal and
the hot seat) for signs of wear or deformation.
16.
Install the new seals as necessary, taking care not to damage the seal grooves.
A
service pack
is available, containing all the seals and strainer screens that
may be necessary for renewal during maintenance or servicing. Refer to section:
Spare Parts'
.
17.
Lightly coat all seals with a
silicone-only based lubricant
(included in
the Service Pack) to assist re-assembly. Refer to section:
'Maintenance,
Lubricants'
.
Re-assembly
18.
Use the 2.5 mm A/F hexagonal wrench to screw the grub screw into the rising
spindle.
19.
Insert the follower, complete with 'O' seal, into the rising spindle. The larger
diameter seal-end must be inserted first.
20.
Place the thrust washer on the non-rising spindle.
21.
Align the slot in the rising spindle with the screw hole in the head, and push
the spindles, complete with 'O' seals, fully into the head.
22.
Check the alignment and install the screw. Tighten the screw.
23.
Fit the circlip.
24.
Make sure that the separator 'O' seal (blue) and the hot seat are fitted to the
Thermotap-3 body correctly, and install the retainer. Grease the 'O' seal.
25.
Locate the spring on the retainer, and install the shuttle/thermostat assembly.
26.
Carefully screw the head assembly, complete with 'O' seal into the Thermotap-3
body. Use a suitable spanner to tighten the head assembly fully.
27.
Fit the collar and stop ring with the arrow aligned with the spout.
28.
Refer to section:
'Commissioning'
for resetting the flow shut-off and maximum
temperature.
