Carel heaterSteam UR Series, User Manual

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41
ENG
“heaterSteam” +0300075EN - rel. 1.2 - 29.09.2015
C
D R
Fig. 10.n
17.
rinse the inner walls of the boiler and remove the lime using a soft
brush;
18.
reinstall the boiler and repeat the previously described operations
reversely; please remind to secure the grounding screws.
For power connections please refer to the wiring diagrams of the heaters
next to the heads.
Anti-adhesive fi lm (optional)
On the inner wall of the boiler is present (depending on model) a fi lm
made in anti-adhesive material that prevents lime from adhering to the
inner walls of the same. For cleaning and replacement:
•
remove the boiler cover following the steps given in the previous
section;
•
slowly remove the fi lm towards boiler inlet, without forcing it to avoid
damaging the same;
•
open the fi lm after having released the click-on couplings;
•
clean with water and use a plastic brush, if necessary; replace it if
damaged;
•
clean the boiler and remove lime;
•
rewind the fi lm on itself by hooking the click-on couplings and reinsert
it into the boiler.
Cleaning the heaters
After you have removed the limestone that detached more easily,
immerse the heaters for 30 minutes in a lukewarm solution of 20% acetic
acid, using a non-metallic spatula to remove the surface deposits that are
still present. Rinse thoroughly; the plates are coated with anti-adhesive
fi lm; avoid using any type of metal tools to avoid damaging the anti-
adhesive fi lm;
10.5 Feeding/drain tempering solenoid valve
UR020-UR080
After having disconnected the cables and the pipes, remove the feeding
electrovalve (V2) and check the cleanliness condition of the inlet fi lter,
cleaning it if necessary using water and a soft brush. Carry out the same
operations on “drain tempering” valve (V1), if present.
V1
V2
V1
V2
Fig. 10.o Fig. 10.p
10.6 Fill tray
UR002-UR013
Check that there are no blockages or solid particles in the tray (V) and that
the conductivity measuring electrodes are clean; remove any impurities
and rinse.
V
Fig. 10.q
10.7 Parts replacement
Fuses (auxiliary circuits)
These measure 10.3 x 38 mm and are housed in the fuse cartridge; to
check the state of the fuses, check their continuity using a tester. Use the
fuses as specifi ed in the table.
UR*02
models
UR002 UR004 UR006 1ph UR006 3ph UR010 UR013 UR020 UR027 UR040 UR053 UR060 UR080
Transformer supply fuses F1-F2 URKFUSE300 (1 A GL, 10,3 x 38)
Pump safety fuses F3 UEKFUSE200 (1 A F 5 x 20 ceramic) URKFUSE300 (1 A GL, 10,3 X 38)
Tab. 10.i
UR*U2 - U.S.A. Version
models
UR002 UR004 UR006 1ph UR006 3ph UR010 UR013 UR020 UR027 UR040 UR053 UR060 UR080
Transformer supply fuses F1-F2 URKFUSE100 (1 A GL, 10,3 x 38)
Pump safety fuses F3 UEKFUSE200 (1 A F 5 x 20 ceramico) URKFUSE100 (1 A GL, 10,3 X 38)
Fuse 4 of transformer secondary circuit UEKFUSE400 (4 A AT 5 x 20 ceramic)
Tab. 10.j