Home > Do-It-Yourself > Generator > Generac Generator > Generac QT07068KVANA Generator

Manual Generac QT07068KVANA Generator

Need a manual for your Generac QT07068KVANA Generator? Below you can view and download the PDF manual for free in English. This product currently has 0 frequently asked questions, 0 comments and has 0 votes. If this is not the manual you want, please contact us.

Is your product defective and the manual offers no solution? Go to a Repair Café for free repair services.

Manual

ENGINE PROTECTIVE DEVICES

The Stationary Emergency Generator may be required

to operate for long periods of time without an opera-

tor on hand to monitor such engine conditions as

coolant temperature, oil pressure or rpm. For that

reason, the engine has several devices designed to

protect it against potentially damaging conditions by

automatically shutting down the unit when the oil

pressure is too low, the coolant temperature is too

high, the coolant level is too low, or the engine is run-

ning too fast.

NOTE:

Engine protective switches and sensors are men-

tioned here for the reader's convenience. Also refer

to the applicable control panel manual for addi-

tional automatic engine shutdown information.

COOLANT TEMPERATURE SENSING 

An analog Water Temperature Sender (WTS) is locat-

ed in the engine's cooling system. This sender is con-

nected to the panel and allows the panel to monitor

and display the temperature of the coolant system.

The WTS is a resistive device whose resistance chang-

es based on coolant temperature. The resistance of

the sender results in a voltage being developed across

the sender. As the Coolant temperature increases,

the resistance will decrease, causing the voltage to

decrease. This changing voltage is converted to 4-

20mA signal by a signal conditioner module. The

corresponding 4-20mA signal is read by the control

panel and displayed as the coolant temperature.

The control panel will monitor and display the cool-

ant temperature anytime the DC input to the control

panel is present.

If the temperature exceeds approximately 140° C

(284° F), the engine shutdown will be initiated. The

generator will automatically restart and the display

will reset once the temperature has returned to an

operating level.

LOW COOLANT LEVEL 

A Low Coolant Level (LCL) sensor is placed in the

generators coolant system. This sensor allows the

panel to detect a Low Coolant Level condition.

The LCL is a resistive device whose resistance changes

rapidly based on the presence or absence of coolant.

The resistance of the LCL results in a voltage being

developed across the LCL. This voltage changes as

the resistance changes. This changing voltage is con-

verted to 4-20mA signal by a signal conditioner mod-

ule. The corresponding 4-20mA signal is read by the

control panel and displayed as the low coolant level.

If the level of the engine coolant drops below the level

of the low coolant level sensor, the engine shutdown

will be initiated.

OIL PRESSURE SENSING 

An analog Oil Pressure Sender (OPS) is used for

monitoring the engine oil pressure. This sender

allows the control panel to measure and display the

Engine oil pressure.

The OPS is a resistive device, whose resistance

changes based on engine oil pressure. The resistance

of the sender results in a voltage being developed

across the sender. As the oil pressure increases,

the resistance will decrease, causing the voltage to

decrease. This changing voltage is converted to 4-

20mA signal by a signal conditioner module. The

corresponding 4-20mA signal is read by the control

panel and displayed as the oil pressure.

The control panel will monitor and display oil pres-

sure anytime the DC input to the control panel is

present.

Should the oil pressure drop below the 8 psi range,

the engine shutdown is initiated. The unit should not

be restarted until oil is added. Turn the AUTO/OFF/

MANUAL switch to the OFF position, then back to

AUTO to restart.

OVERCRANK SHUTDOWN 

When the control panel receives a start signal, it ini-

tiates the programmed starting sequence. The start

sequence consists of the number of crank attempts,

the length of each crank attempt, and the rest time

between each crank attempt. If the engine has not

started by the end of the final crank attempt, an

Overcrank alarm is generated, the control panel will

sound the alarm and display the message "Failed to

start".

OVERSPEED  SHUTDOWN

A speed circuit controls engine cranking, start-up,

operation and shutdown. Engine speed signals are

delivered to the circuit board whenever the unit is

running. Should the engine over speed above a safe,

preset value, the circuit board initiates an automatic

engine shutdown. Contact the nearest Authorized

Dealer if this failure occurs.

RPM SENSOR LOSS SHUTDOWN 

If the speed signal to the control panel is lost, engine

shutdown will occur.

DC FUSE 

This fuse is located inside of the control panel. It

protects the panel wiring and components from

damaging overload. Always remove this fuse before

commencing work on the generator. The unit will

not start or crank if the fuse is blown. Replace the

fuse with one of the same size, type, and rating. (See

the exploded views and parts lists at the end of this

manual for replacement part number.)

4-1

Stationary Emergency Generator

Engine Protective Devices

EngProt002 Rev. C 10/08

Rating

Let us know what you think about the Generac QT07068KVANA Generator by leaving a product rating. Want to share your experiences with this product or ask a question? Please leave a comment at the bottom of the page.

Are you satisfied with the Generac QT07068KVANA Generator?
Yes No

Be the first to rate this product

0 votes

Join the conversation about this product

Here you can share what you think about the Generac QT07068KVANA Generator. If you have a question, first carefully read the manual. Requesting a manual can be done by using our contact form.

More about this manual

We understand that it’s nice to have a paper manual for your Generac QT07068KVANA Generator. You can always download the manual from our website and print it yourself. If you would like to have an original manual, we recommend you contact Generac. They might be able to provide an original manual. Are you looking for the manual of your Generac QT07068KVANA Generator in a different language? Choose your preferred language on our homepage and search for the model number to see if we have it available.