Amptec Research 640N, Руководство по эксплуатации и техническому обслуживанию

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A-3. Opening the 640N Igniter Tester and
removal of the Lid
When closed, the 640N Ohmmeter has two
large O-rings that provide a very water resistant
and on occasion even an air tight seal. By
pressing down with your palm as diagramed
above you compress the O-ring in the lid of the
640A. This makes it easier to flip up the release
latch. Repeat the palm press step on the other
corner of the 640N while flipping up the release
latch. At this point the 640N lid will normally be
able to be raised, and placed in an open lid state.
If the 640N doesn’t open after flipping up the
release latches, a change in atmospheric
pressure since the unit was last closed may be
the culprit.
Turn the Air Pressure Equalization
or “Purge Valve” counter-clockwise. Once air-
pressure is equalized, the 640N can be opened.
If the Purge Valve was opened, return the valve
to the closed state (tighten = clockwise) once the
640N lid is open.
The 640N has a way to remove it’s lid
completely , for example when used in an indoor
laboratory environment. With the 640N open,
remove the units two hinge pins (hex type) by
twisting them. The lid should come free at the
hinge. Once the lid is removed replace the hinge
pins in the hole they were pulled out of.
A-4. AC/DC Battery Charger - Power
Requirements
The AMPTEC 640N is powered by an internal
rechargeable heavy-duty nickel-cadmium
battery pack (4 ea D cell - 5.7 AHr).
Replacement batteries may be purchased,
contact the sale department at AMPTEC
RESEARCH.
The battery charger is an external AC/DC
converter that plugs into a standard 115VAC
receptacle. The AC adapter provides 9VDC @
1.1amperes. The AC Adapter Battery Charger is
configured with a notched connector that plugs
into the “mating” notched “J1” connector on the
640N front panel.
RESEARCH
AMPTEC
640N
Press Down with Palm here
While opening release Latch A
Press Down with Palm here
While opening release Latch B
Remove both hinge pins (hex type)
with lid open to remove lid from its hinge
A. Release Latch B. Release Latch
C. Air Pressure Equalization (Purge Valve)