1652H302 Ed.03
16
Fan start-up delay
This is established through parameter
F4
and allows for the possible drops left in the evaporator to freeze before
the fans activate, preventing them from being projected into the cold room. It also prevents heat being supplied to
the cold room due to defrost in the evaporator.
If defrost is cancelled before 1 minute has elapsed, the drip time (
d9
) is not applied and the fans are
activated without taking into account the start-up delay (
F4
).
If defrost is by air or is static, the drip time (
d9
) and fan start-up delay (
F4
) are deactivated.
Message displayed during defrost
This is established using parameter
d2
, and you can choose between displaying the real temperature captured by
probe 1 (
d2
=0), showing the temperature captured by probe 1 at the start of the defrost (
d2
=1), or displaying the
dEF (
d2
=2) message. Parameter
d3
defines the time during which the aforementioned message will be displayed
once the drip time (
d9
) and fan stop time (
F4
) are complete.
Remote defrost
This function allows defrost of the unit to be activated using an external button, connecting it to one of the digital
inputs that must be configured as remote defrost (
I10
or
I20=
5) .
Defrost locking
This prevents defrost starting at unusual points by means of an external switch, which may be useful for ensuring
that the installation's load does not excessively increase, exceeding the permitted limits.
The external switch must be connected to one of the digital inputs, which should be configured as “Defrost
locking” (
I10
or
I20=
6).
Defrost of a second evaporator
(only devices with 5 relays)
This function allows for defrost to be controlled in a second evaporator, provided that defrost is by electric heat, by
air or is static. The same type of defrost should be used for the first and second evaporators.
This requires configuration of input 2 as a 2nd evaporator probe (
l20
=8). In the event of an error in the 2nd
evaporator probe, defrost completes once the time defined in
d1
has elapsed.
Electric defrosting
This requires configuration of relay AUX 2 as 2nd evaporator defrost (
o10
=5).
Defrost begins simultaneously in both evaporators. When the probe of evaporator 1 reaches the temperature
defined in
d4
, the DEF relay deactivates, completing defrost of evaporator 1. Defrost of evaporator 2 is
completed when the evaporator 2 probe reaches the temperature defined in
d4
. Drip time begins when both
defrosts are complete.
Defrost by air
The fans of both evaporators are connected in parallel to the FAN relay.
Defrost begins simultaneously in both evaporators and does not complete until both probes reach the
temperature defined in
d4
. Drip time subsequently begins.
Static defrost
Defrost begins simultaneously in both evaporators and does not complete until both probes reach the
temperature defined in
d4
. Drip time subsequently begins.
Summary of Contents for AKO-16520
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