Carel heaterSteam UR Series, User Manual

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42
ENG
“heaterSteam” +0300075EN - rel. 1.2 - 29.09.2015
Heaters fuses (humidifi ers UR027 at 230 V, UR060 – UR080 at 460 -
575 V, UR053 – 460 V)
Dimension of fast fuses 27x60 housed in fuse carrier bases that can be
selected. Check their continuity using a tester.
models
UR027
(230V 3 ph)
UR053
(460V 3ph)
UR060
(460V 3ph)
UR080
(460V 3ph)
UR080
(575V 3ph)
Fuses
F5 - F6 - F7 40 A, GG
(KTK)
40 A, GG
(KTK)
50 A, GG
(KTK)
40 A, GG
(KTK)
40 A, GG
(KTK)
Fuses
F8 - F9 - F10 40 A, GG
(KTK)
40 A, GG
(KTK)
40 A, GG
(KTK)
40 A, GG
(KTK)
40 A, GG
(KTK)
Fuses F11
F12 - F13
not used not used not used
40 A, GG
(KTK)
40 A, GG
(KTK)
Tab. 10.k
Fuse Code fuse
40 A, GG (KTK) URKFUSE700
50 A, GG (KTK) URKFUSE800
Heaters
To replace the heaters, unmount them removing the fastening nut (D)
on the cover; in this case it is advisable to replace the seal (G) A torque
of 5 NM (3.7 ft-lbs) is required on the fastening nut when installing the
replacement heaters.
D
G
Fig. 10.r
PTC temperature sensor
The PTC sensors (one for each heating element) do not require regular
maintenance; they should only be replaced if the safety thermostat is
activated due to operation without water: in fact, the intervention of just
one PTC will cause the control module to shut-down operation.
To replace them, remove the boiler (models UR002-UR013) or the top
panel of the humidifi er (models UR020-UR080) as explained in the
previous paragraphs and then:
•
remove the covers that protect the heaters;
•
disconnect the terminals of the PTC sensor from the terminal block,
remove it from probe housing and replace it;
•
insert the new sensor and restore wiring.
Note : the sensor should be inserted until it reaches the limit
switch.
6 8
Fig. 10.s
NTC temperature sensor
The NTC temperature sensor is located in probe housing (P) outside the
boiler, under the insulation mattress.
!
drain
x 1000
Steam
Drain
Fill
Alarm
PRG
reset
SEL
I
P
I
P
Fig. 10.t Fig. 10.u
•
disconnect the terminals of NTC sensor from the terminal block (8),
remove it from probe housing and replace it;
8
Fig. 10.v
Drain pump
Models UR002-UR013
Procedure:
•
remove the boiler as shown in section 9.3;
•
identify the drain pump on the base of the humidifi er, unthread the 3
screws and remove it;
•
check the condition of gasket (G) and replace it, if required.
V
G
Fig. 10.w