Snap-On POLARTEK HYBRID EEAC332, Service Manual

Page: 72 / 82

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MOTHERBOARD
[SCH1452] rev.C-01
REF. PIN DESCRIPTION
BT1
Battery
BZ1
Buzzer
J2
7" graphic display (data I/O)
J3
- - -
J4
7" graphic display (backlight)
J5
7" graphic display (power supply)
J9
- - -
J10
- - -
J16
USB port
J17
- - -
J18
- - -
J19
SD card
J22
Used oil load cell - 15 kg
J23
Refrigerant bottle load cell - 35 kg
J24
- - -
J25
- - -
J30
A/C pressure transducer
J31
Refrigerant bottle pressure transducer
J32
Evaporator pressure transducer
J33
- - -
J34
Ambient temperature probe
J35
Refrigerant bottle temperature probe
J36
- - -
J37
- - -
J39
- - -
J40
High pressure switch - 20 bar
J42
- - -
J43
- - -
J45
Printer
J46
- - -
J47
- - -
J49
Status LED light
J50
- - -
MOTHERBOARD
[SCH1452] rev.C-01
REF. PIN DESCRIPTION
J51
Input DC - 5V & 12V
J52
01-03 Compressor
04-06 - - -
07-09 Vacuum pump
10-12 - - -
J53
13-14 Refrigerant Tank heater
15-16 - - -
17-18 - - -
19-20 EV2 Low pressure electronic valve
21-22 EV4 Inlet vacuum electronic valve
23-24 EV6 Oil compressor refill electronic valve
J54
25-26 EV8 Refilling electronic valve
27-28 EV10 Air purge electronic valve
29-30 EV1 High pressure electronic valve
31-32 EV3 outlet evaporator electronic valve
33-34 EV5 Outlet vacuum electronic valve
35-36 EV7 Oil discharge electronic valve
J57
61-62 Condenser Fan
63-64 EV19 Washing pipes (Hybrid)
65-66 - - -
67-68 - - -
69-70 - - -
71-72
EV9 Evaporator overpressure electronic
valve
J58
Input AC 115V