Operating Instructions - Guardian 4389 Repair Manual

SECTION 1.6

OPERATING INSTRUCTIONS

CONTROL PANEL
GENERAL:
See Figure 1 for appropriate control panel configura-
tions.
HOURMETER:
Equipped on some models only. The hourmeter indi-
cates 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 pow-
ers the engine ignition system and the fuel shutoff
solenoid.
WITH HOURMETER
AUTO OFF
HOUR METER
FUSE FUSE
SET
15A 5A
EXERCISE
TIME
WITHOUT HOURMETER
AUTO OFF MAN.
SET
15A
EXERCISE
TIME
WITH 12 VDC ACCESSORY OUTLET
EXTERNAL
OUTLET FUSE
7.5A
BREAKER
AUTO OFF MAN.
12 VDC
SYSTEM FUSE
SET
15A
EXERCISE ACCESSORY
TIME OUTLET 7.5A MAX
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:
Page 20
GENERAC
POWER SYSTEMS
MAN.
SYSTEM SET
LOW OIL
HIGH TEMP
OVER SPEED
OVER CRANK
GENERAC
POWER SYSTEMS
SYSTEM SET
LOW OIL
HIGH TEMP.
OVER SPEED
OVER CRANK
F L A S H I N G G R E E N L E D =
N O U T I L I T Y S E N S E
4 F L A S H I N G R E D L E D S =
E X E R C I S E R N O T S E T
GFCI
CIRCUIT
SYSTEM SET
LOW OIL
HIGH TEMP.
OVER SPEED
OVER CRANK
F L A S H I N G G R E E N L E D =
N O U T I L I T Y S E N S E
4 F L A S H I N G R E D L E D S =
E X E R C I S E R N O T S E T
PART 1
a. Select AUTO for fully automatic operation.
b. When AUTO is selected, circuit board will moni-
tor 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 replace-
ment become necessary, use only an identical 15
amp replacement fuse.
5 AMP FUSE:
Equipped on some models only. 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.
GENERAL INFORMATION