Feed/Drain Tempering Solenoid Valve - Carel heaterSteam User Manual

c. loosen the seal strip and remove the steam pipe (1);
5
B
A
Fig. 14.k
d. disconnect level gauge connector (2);
e.
from the boiler cover, remove the pressure compensation pipe (3)
connected to the level control;
f. remove the cover that protects the heaters (5), loosen the fastening
nuts and remove the wires and the ground cable (6);.
g.
disconnect the probe connector and remove the NTC probe from
the well (4);
h. remove the screw (A) and the screws of the rear fastening bracket (B);
i.
remove the boiler sliding it onto the guides (8);
j.
remove the outer insulating mattress (7);
k. unscrew and remove the nuts (9) to raise the cover and remove it
from the boiler;
9
Fig. 14.l
l. to replace the heaters refer to the (see paragraph 6.7 "Replacing the
parts");
m.
clean the heaters;
n. the heaters (R) can also be cleaned without unmounting the
top cover; this can be achieved by removing the front fl ange and
loosening the fastening nuts (Z);
o. now remove the fl ange with the fi lter (C);
1
3
2
4
p.
q.
For power connections please refer to the wiring diagrams of the heaters
7
next to the heads.
I
8
Scale collection bag (optional - only unit 2-13 kg)
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 almeno 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; are plates are coated with
anti-adhesive fi lm.

14.5 Feed/drain tempering solenoid valve

UR002-UR013
After having disconnected the cables and the pipes, remove the feed
solenoid valve (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
Z
operations on "drain tempering" valve (V1); (if featured, depending on the
model).
Fig. 14.m
63
Fig. 14.n
rinse the inner walls of the boiler and remove the lime using a soft
brush;
reinstall the boiler and repeat the previously described operations
reversely; please remind to secure the grounding screws.
V1
V2
Fig. 14.o
"heaterSteam" +0300080EN - rel. 1.0 - 27.04.2016
ENG
C
V1
V2
Fig. 14.p