Global 8550-RU, Руководство по эксплуатации

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Global Power Technologies SERVICE AND MAINTENANCE
302954 rev0 | Model 8550-RU Page 32 of 53
7. Check the battery voltage by measuring the voltage between the brown wire at the Pressure
Switch and the thin white/black wire at Terminal 4 on TB-1. The voltage should be greater than
2.0 Volts.

If the voltage is less than 2.0 Volts, recharge the battery. See procedure below.

If the battery does not hold voltage after a full 16-hour charge cycle, replace the battery
and/or the SI Control Module.
The TEG may be jump-started to charge a depleted battery. To do this:
1. Remove the thin white/red and white/black wires from terminals 2 and 4 on TB-1 and apply a 12-
to 30-Volt power source across these wires.
2. Start the TEG normally.
3. Reconnect the removed wires once the Fuel Shutoff Valve no longer requires the button to be
manually held.
5.7 OVERTEMPERATURE SHUTDOWN SYSTEM
The purpose of the safety shutdown system is to shut off the fuel supply in the event of a Power Unit
or cabinet overtemperature. Overtemperature conditions can occur if air flow across the heat pipes is
restricted, ambient temperatures exceed maximum ratings, or from heat pipe failure.
The Overtemperature Shutdown system consists of the following main components:

Six Shutdown Thermostats – Each thermostat is installed in a heat pipe block and protects
two heat pipes. During an overtemperature event, the thermostat will cause the respective
shutdown fuse to blow in the Shutdown Module.
NOTE: Thermostats produced after September 2021 will come paired with an Adaptor
Board that must be installed for proper operation.

Shutdown Module – This module houses the thermostat fuses and is powered directly from
the power unit. If all six fuses are intact, and the power unit voltage is above 12.5 Volts, this
Module will provide 12 Volts to energize the Shutdown Relay.

Shutdown Relay Assembly – This assembly is situated between the burner thermocouple and
the shut-off valve. When energized, it allows the thermocouple signal to pass through. If an
overtemperature event occurs it will de-energize and interrupt the signal, thereby shutting
off the fuel valve.

Thermal Cut-off – This is a thermal fuse that is placed in line with the Shutdown Relay red
power wire. While the six thermostats protect the heat pipes and power unit, the thermal
cut-off protects the cabinet interior from overtemperature. If the cabinet gets too hot, this
fuse will open and cause the shutdown relay to de-energize.