Hitachi NEXT Series Instruction Manual page 19

■ Maintenance Notice Messages
A maintenance date is determined by the amount of total operating hours or an elapsed calendar period, whichever
comes first. When the maintenance date or time arrives, the maintenance notice message appears on the display under
the heading of MAINTenance.
This function is an alarm display only, and does not output alarm externally.
Replace suction throttle valve consumable parts when inspection maintenance is displayed or the 1 million unloader
count alarm is given, whichever comes first.
If the inspection/maintenance is displayed, check the display contents, refer to maintenance standards
given in the compressor instruction manual and perform inspection/maintenance as soon as possible.
When inspection is complete, press and hold the SET button for at least 7 seconds.
The LCD monitor display contents then move to "Maintenance initial value completed" of the message
screen, and then return to the monitor screen 1 minute later.
NOTES:
1. MAINTenance can be reset, if the servicing is done earlier than expected and if the remaining operating time to next maintenance
is less than 2,000h in the case of A, 1,000h in the case of B.
2. On the contrary, if the servicing is done after the maintenance notice has appeared, the remaining operating hours to the next main-
tenance has been zero until the maintenance is done. After maintenance and resetting the counter, new counting time starts just
after the maintenance notice message has appeared on the display.
■ Other Messages
(1) SWITCHED TO LOCAL.
If set to local by remote operation following shut-
down restoration, operation automatically returns
to local when shutdown occurs, and the message is
displayed for 1 minute. For setting details, see
"3.4 How to Use the Digital Monitor."
( page 25)
(2) IN OVERRIDE MODE.
This message blinks when the DSP is in an over-
ride mode.
3. OPERATING THE DSP [How to Use the Liquid Crystal Display (LCD)]
(1)
(2)
(3)
CAUTION
Every these calendar periods: Service the DSP according to the schedules:
0.5 years, 1.5 years, 2.5 years
Half-Yearly
3.5 years, 4.5 years, 5.5 years
1.0 years, 5.0 years Yearly + Half-Yearly
2.0 years, 4.0 years 2-Yearly + Yearly + Half-Yearly
3.0 years 3-Yearly + Yearly + Half-Yearly
6.0 years (for overhauling) 6-Yearly + 3-Yearly + 2-Yearly + Yearly + Half-Yearly
A
Standard Maintenance Schedule (A) (for yearly 8,000-or-less operating hours)
B Standard Maintenance Schedule (B) (for yearly 4,000-or-less operating hours)
(3) UNLOAD STOP
If the UNLOAD STOP button is used, the display
flashes. The compressor unloads for 5 minutes and
then stops.
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