Fri-Jado Deli Multisserie, Руководство по обслуживанию

Страница: 62 / 132

ELECTRICAL TESTS
Page 62
Service Manual Deli Multisserie form 9123667 rev. 20220317
5V
X30 X31 X17 X16
11
14
21
24
K7
K8
54
53 98 95
drain
cooking
pos.
pos.
cleaning
drain
Power and I/O board
X4 X3
drain valve
cooking
pos.
cleaning
pos.
M4
50 48
36
A2
A1
4
3
A2
K8
1
K7
5 6
A1
107
101
101
TB2-1
TB2-2 TB2-3
Slave board
X10
38
39
X11
N
L
40
X16 X17 X30 X31
X3 X4
50
48
54
53
98
95
1 3 4
5 6
PE
101
107
54
53 95
98
101
36 48 50
K7 K7 K8 K8
TB2 TB2
± 5kΩ
± 5kΩ
50-200Ω
± 36kΩ
± 0 Ω
± 36kΩ
± 36kΩ
± 0 Ω
± 36kΩ
Working principle.
The 3 way valve is turned into the drain (sewer) posi-
tion at the moment that the cleaning program is
started. Waste water goes into the sewer.
As soon as the cleaning program ends or is interrup-
ted, the valve is turned into opposite direction
back to the default cooking position. Grease wil go
down into the container.
The cooking position is activated by output X3 on the
slave I/O board. (relay in OFF position)
As soon as the cooking position is reached, the contact
inside the motor housing disconnects the motor
and activates relay K7.
The contact of relay K7 closes and connects terminal
X30 to X31 on the Pwr and I/O board. This is the
feed back signal for the processor that the valve
reached the cooking position
The cleaning position is activated by output X4 on the
slave I/O board. (relay ON). When in position, the
motor contact activates relay K8, the contact of K8
closes and connects terminal X16 to X17.
A 7-core cable provides the power and the signal wires
for the 3 way valve.
Note that wire nr 2 is not used. It has been cut out the
cable. The terminal block inside the motor housing
has the same numbers as the wires inside the cable.
Passive measurements
(resistance)
Disconnect the mains supply first!
The picture overview shows which measurements can
be expected
without disconnecting wires .
Disconnect wire “1” from the terminalblock (TB2-1)
for further measurements!
The 3 way valve in cooking position.
(normal position )
Between 1 and 3
∞
Ω
Between 1 and 4 5000 Ω (Motor of valve)
Between 3 and 4
∞
Ω
Between 3 and 5 ± 0 Ω (Feed back signal)
Between 4 and 6
∞
Ω
The 3 way valve in cleaning position.
Between 1 and 3 5000 Ω (Motor of valve)
Between 1 and 4
∞
Ω
Between 3 and 4
∞
Ω
Between 3 and 5
∞
Ω
Between 4 and 6 ± 0 Ω (Feed back signal)
The 3w. valve in between cooking and cleaning pos.
Between 1 and 3 5000 Ω (Motor of valve)
Between 1 and 4 5000 Ω (Motor of valve)
Between 3 and 4 1000 Ω (Motor of valve)
Between 3 and 5
∞
Ω
Between 4 and 6
∞
Ω
Note that the resistances of the motor can reach
6000Ω and 1200 Ω after a run. The motor is ther-
mally protected.
MEASURING ON THE 3 WAY VALVE
Note that wire
nr. 3 is on terminal 2
and wire
nr 4 on terminal 3!!!
Cooking position->
Cleaning position->
Typical resistance
values without dis-
connecting wires!
Cooking position->
Cleaning position->