Guardian Technologies 4758 - Manual (Page 21)

CONTROL PANEL
GENERAL:
See Figure 1. The front face of this panel mounts (a)
an hourmeter, (b) an AUTO-OFF-MANUAL switch ,(c)
a 15 amp fuse, (d) a 5 amp fuse, (e) a set exercise
switch and (f) the protection systems.
HOURMETER:
Equipped on some models only. The hourmeter
indicates engine-generator operating-time, in hours
and tenths of hours. Use the meter in conjunction with
the periodic maintenance schedule for the applicable
generator set. circuit board action turns the hourmeter
on at startup, via the same (Wire 14) circuit that
powers the engine ignition system and the fuel shutoff
solenoid.
Figure 1. Control Panel
AUTO-OFF-MANUAL SWITCH:
Use this switch to (a) select fully automatic operation,
(b) to crank and start the engine manually, and (c) to
shut the unit down or to prevent automatic startup.
1. AUTO position:
a. Select AUTO for fully automatic operation.
b. When AUTO is selected, circuit board will
monitor utility power source voltage.
c. Should utility voltage drop below a preset level
and remain at such a low level for a preset time,
circuit board action will initiate engine cranking
and startup.
d. Following engine startup, circuit board action
will initiate transfer of electrical loads to the
"Standby" source side.
e. On restoration of utility source voltage above a
preset level, circuit board action will initiate
retransfer back to the "Utility Source" side.
f. Following retransfer, circuit board will shut the
engine down and will then continue to monitor
utility source voltage.
2. OFF Position:
a. Set the switch to OFF to stop an operating
engine.
b. To prevent an automatic startup from occurring,
set the switch to OFF.
3. MANUAL Position:
a. Set switch to MANUAL to crank and start unit
manually.
b. Engine will crank cyclically and start (same as
automatic startup, but without transfer). The unit
WILL transfer if utility voltage is not available.
DANGER: WHEN THE GENERATOR IS
INSTALLED IN CONJUNCTION WITH AN
AUTOMATIC TRANSFER SWITCH, ENGINE
CRANKING AND STARTUP CAN OCCUR AT
ANY TIME WITHOUT WARNING (PROVIDING
THE AUTO-OFF-MANUAL SWITCH IS SET TO
AUTO). TO PREVENT AUTOMATIC STARTUP
AND POSSIBLE INJURY THAT MIGHT BE
CAUSED BY SUCH STARTUP, ALWAYS SET
THE AUTO-OFF-MANUAL SWITCH TO ITS
OFF POSITION BEFORE WORKING ON OR
AROUND THIS EQUIPMENT.
15 AMP FUSE:
This fuse protects the DC control circuit (including the
circuit board) against overload. If the fuse element
has melted open due to an overload, engine cranking
or running will not be possible. Should fuse
replacement become necessary, use only an identical
15 amp replacement fuse.
5 AMP FUSE:
This fuse protects the battery charge circuit against
overload. If the fuse element has melted open due to
an overload, battery charge will not occur. Should
fuse replacement become necessary, use only an
identical 5 amp replacement fuse.
PART 1
GENERAL INFORMATION
SECTION 1.6
OPERATING INSTRUCTIONS
Page 1.6-1