Preparation For Operation; Section 2. Operation; General - Hobart GPU-600 Operation And Maintenance Manual

CHAPTER 2. DESCRIPTION AND
OPERATION

SECTION 2. OPERATION

1. General

This section contains information for safe and efficient operation of the equipment. Operating instructions
are presented in step-by-step sequence of procedures to be followed in supplying 28 V DC to an aircraft
or similar load.
WARNING: ELECTRIC SHOCK AND FIRE CAN KILL! READ AND UNDER-
STAND ALL OPERATING INSTRUCTIONS BEFORE ATTEMPTING TO OPER-
ATE THE EQUIPMENT. OPERATION ATTEMPTS BY UNTRAINED
PERSONNEL CAN ENDANGER PEOPLE, THIS EQUIPMENT, AND THE LOAD.
DO NOT ATTEMPT TO OPERATE THE EQUIPMENT FOR USES NOT AP-
PROVED BY THE MANUFACTURER, OR AT INPUT AND OUTPUT RATINGS
NOT LISTED IN THE SPECIFICATION TABLE LOCATED IN 2-1, FIGURE 2.
The repeated opening of input fuses or repeated functioning of the overload trip circuitry indicates a mis-
application, a faulty main component, or an improper connection or load. Correct the problem by following
the instructions in Chapter 3 before attempting to operate the power supply. Be certain that an input dis-
connect means is readily accessible between the power input source and this DC power supply. You may
need to quickly isolate the DC power source from all power during an emergency, fire, or equipment mal-
function.

2. Preparation for Operation

A. Verify input power is disconnected at source.
B. Verify that the supply input connections agree with the input voltage available by comparison to the
voltage changeover diagram.
C. Connect your output cable between your load and the proper connection points in the DC power
supply.
D. When all covers or panels are in place, turn on the source of input power.
E. Set R13 start level control knob (9, Fig. 1) to the output surge limit required for your load.
April 10/89 Revised
OM-2010
2-2
Page 1