Murphy Automobile Parts AT 04060N User Manual

AT-04060N  
Effective 04-04  
Section 40  
Installation and Operation Manual for  
00-02-0568  
®
MURPHYMATIC Engine Throttle Controller  
Model AT03069  
Please read the following information before installing. A visual inspection of this product for damage during shipping is recommended  
before mounting. It is your responsibility to have a qualified person install this unit and make sure it conforms to NEC and local codes.  
GENERAL INFORMATION  
WARNING  
BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT  
Disconnect all electrical power to the machine.  
Make sure the machine cannot operate during installation.  
Follow all safety warnings of the machine manufacturer.  
Read and follow all installation instructions.  
Description  
The AT03069 is a heavy duty device developed specifically to automatically  
control engine speed to meet system demand. It is typically applied to the throttle  
butterfly on a natural gas engine, but may also be applied to various diesel or  
Operation  
A Murphy SWICHGAGE® * constantly monitors pressure,  
level, temperature or load. Adjustable high and low contacts on  
SWICHGAGE® are set slightly above and below desired oper-  
ating point. When demand changes, pointer touches appropri-  
ate high or low contact and signals speed change. AT03069  
controller responds only so long as contact is made. The con-  
troller stops immediately when contacts separate. Slow,  
smooth action prevents “hunting” or “surging” on normal  
applications.  
gasoline engines. Low current, high torque, solid state switching and electronic  
clutch make it ideal for all automatic and semiautomatic engine systems.  
Specifications  
Voltage: 11-28 VDC negative ground.  
Maximum Current: 200 mA @ 25 in-lb.  
Standby Current: Approx. 7 mA.  
Increase and Decrease: Inputs float at approx. 8.4 VDC. Grounding inputs causes  
8 to 18 mA of current to flow from either depending upon force.  
Torque: 25 inch pounds.  
Sealed limit switches: Factory adjusted, controls maximum travel.  
Linkage adjustment on lever arm: Adjusts travel: 1-3/16 in. (30 mm);  
1-11/16 in. (43 mm); 2 in. (51 mm); 2-1/4 in. (57 mm) approximately.  
Travel Time: 11 to 20 seconds depending on the force required.  
Net Weight: 5 lb. (2.27 kg)  
*Mercury tube or snap-action switches are not suitable for this type control.  
For more information, recommendations and quotations contact our  
engineering department.  
Dimensions  
3-3/4 in. (95 mm)  
6-3/4 in. (171 mm)  
3-13/16 in. (97 mm)  
Front  
Side  
Drill Guide  
(Not to scale)  
7/8 in.  
(22 mm)  
5-1/8 in. (130 mm)  
5-7/8 in. (149 mm)  
Flex-Link Assembly  
3-5/8 in. (92 mm)  
4-3/4 in. (121 mm)  
5-1/2 in. (140 mm)  
12-1/4 in. (311 mm)  
15 in. (381 mm)  
Installation AT-04060N page 1 of 2  
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