Section 2 – SR-2 Hardware Description
SL SERIES CONTROLS
The control panel shown below is used on SL-400e
SR-2 units.
S
mart
R
eefer
2
OFF
ON
MENU
2
°C
2
CYCLE SENTRY
SET
SENSORS
GAUGES
POINT
.1
THERMO KING
MICROPROCESSOR ON/OFF
SWITCH
The microprocessor On/Off switch applies 12 volts
DC control power to the unit interface board at J4.
Main power to the controls is supplied by 15 amp
fuse F2.
IMPORTANT
Always turn the unit Microprocessor On/Off
switch "off" before inspecting or working on any
part of the unit.
SB Series Units
The Microprocessor On/Off switch is located on the
side of the control box. It can be reached by
opening the engine compartment doors.
MICRO-
PROCESSOR
OFF
ON
SL Series Units
The Microprocessor On/Off Switch is located on the
control panel between the data ports.
S
mart
R
eefer
2
OFF
ON
MENU
2
°C
2
CYCLE SENTRY
SET
SENSORS
GAUGES
POINT
.1
THERMO KING
OVERCURRENT PROTECTION
Overcurrent protection is provided by a fusible link
located in the positive battery cable. A 15 amp main
power fuse F2 is located in the “2A/2AB” circuit.
Outputs are either fuse protected or smart FET
(Field Effect Transistor), protected. All fuses are
located on the interface board. Smart FETs halt
current flow if an overcurrent condition exists and
resume operation when current flow is within limits.
A poly switch provides overcurrent protection for the
On/Off relay. These overcurrent devices reset
automatically and are not replaceable.
2-5
31 January 2005
Содержание SR-2 SmartReefer2
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