Carel WB000DG0F0 User Manual

46
ENG
UltraCella +0300083EN - rel. 1.5 - 07.02.2015
RES
FAN
PDV
CMP
t
F3=1F0=0
REFRIG
PUMP
DOWN
DEF
(REF)
OFF
ON
OFF
ON
OFF
ON
OFF
ON
c8
DRIP
(dd)
POST
DRIP
(Fd)
REFRIG
Fig. 6.j
Key
CMP Compressor
Refrig Refrigeration
PDV Pump down valve
Pump down Pump down phase
FAN Evaporator fan
Def Defrost
RES Resistance (defrost heater)
Drip Drip
E Evaporator
Post drip Post drip
C Condenser
V2 Thermostatic expansion valve
F Dehydrator fi lter
t Time
B3 Defrost probe
L Liquid receiver
S Liquid indicator
Note:
• in pump-down the fan activation is determined by F0;
• in defrost the fan activation is determined by F3.
2. hot gas defrost (d0 = 1, 3): operating cycle.
The operating cycle refers to default values of the parameters F2 and F3.
T
B3
E
S
F
L
C
CMP
V2
V_def
M
Fig. 6.k
Note: the defrost output (DEF) is used for command of the hot
gas valve V_def.
V_def
FAN
CMP
t
F3=1F0=0
REFRIG REFRIGDRIPPOST
DRIP
DEF
(hot gas)
OFF
ON
OFF
ON
OFF
ON
c8
Fig. 6.l
Key
CMP Compressor
Refrig Refrigeration
FAN Evaporator fan
Def Defrost
V_def Hot gas valve
Drip Drip
E Evaporator
Post drip Post drip
C Condenser
B3 Defrost probe
V2 Thermostatic expansion valve
L Liquid receiver
F Dehydrator fi lter
S Liquid indicator
t Time
The defrost is activated, upon priority:
• from keyboard, using the defrost key;
• from clock, setting the event and the starting mode, with maximum 8
defrosts a day (parameters dd1...dd8);
• setting the cyclic range “dI”;
• from digital input;
• from supervisor.
The defrost is disabled:
• defrost by temperature: when the defrost probe detects a temperature
greater than the defrost end temperature dt1;
• defrost by time: in the absence of the defrost probe, the defrost ends
after the maximum time set by parameter dP1.
6.8.1 Maximum period of time between consecutive
defrosts
Par. Description Def Min Max U.M.
dI Maximum interval between consecutive
defrosts
0 = defrost not performed
8 0 250 hour
The parameter dI is a security parameter that allows cyclical defrosts
every “dI” hours even in the absence of the Real Time Clock (RTC). At the
beginning of each defrost cycle, regardless of duration, a count is started.
If the dl time is exceeded without performing any defrost, the defrost is
automatically activated. The counter remains active even if the controller
is off .

Carel WB000DG0F0 Specifications

General

Brand	Carel
Model	WB000DG0F0
Category	Controller
Language	English