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TK 56704-1-OP-EN
AAuuttoommaattiicc PPhhaassee CCoorrrreeccttiioonn:: The control system features two motor
contactors. This allows correct motor rotation regardless of phase rotation
on the incoming power.
SmartPower Optional Features
The following features are available as options on units equipped with
Electric Standby.
• Auto Switching
Unit Protection Devices
HHiigghh PPrreessssuurree CCuuttoouutt SSwwiittcchh ((HHPPCCOO)):: This normally closed switch
monitors the discharge pressure at the compressor. It opens on high
discharge pressure to shut the unit down to prevent damage.
EElleeccttrroonniicc TThhrroottttlliinngg VVaallvvee ((EETTVV)):: This component is an electromechanical
control device used to limit the suction pressure to the compressor. The
valve is controlled by the microprocessor controller.
EEnnggiinnee OOiill PPrreessssuurree SSwwiittcchh//SSeennssoorr:: The engine oil pressure switch/sensor
is located on the filter head above the bypass oil filter. Engine oil pressure
should rise immediately on starting. If engine oil pressure drops below 10 ±
2 psig (69 ± 14 kPa), the switch/sensor signals the microprocessor to stop the
engine.
PPrreehheeaatt BBuuzzzzeerr:: The preheat buzzer sounds when the CYCLE-SENTRY
system energizes the glow plugs. This should warn anyone near the unit that
the CYCLE-SENTRY system is about to start the diesel engine.
CCoooollaanntt TTeemmppeerraattuurree SSeennssoorr:: This sensor provides an engine coolant
temperature input to the microprocessor. If the engine coolant temperature
is too high, the controller stops the unit and records an alarm.
EElleeccttrriicc MMoottoorr OOvveerrllooaadd RReellaayy ((MMooddeell 5500)):: The overload relay protects the
electric standby motor. The overload relay opens the circuit from the
contactor to the electric motor if the motor overloads for any reason and an
alarm will occur. The relay resets when the alarm code is cleared.
FFuusseess:: Sizes and functions are described in the Specifications chapter of this
manual.
Engine Compartment Components
CCoooollaanntt EExxppaannssiioonn TTaannkk:: The coolant level and temperature are monitored
by the base controller. If the coolant temperature becomes too high or the
level becomes too low, an alarm will occur.
UUnniitt DDeessccrriippttiioonn
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