Amptec Research 620A 4R, Руководство по эксплуатации и обслуживанию

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A-3. Opening the 620A 4R Igniter Tester
and removal of the Lid
When closed, the 620A 4R 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
620A 4R. This makes it easier to flip up the
release latch. Repeat the palm press step on the
other corner of the 620A 4R while flipping up
the release latch. At this point the 620A 4R lid
will normally be able to be raised, and placed in
an open lid state.
If the 620A 4R 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 620A 4R can be
opened. If the Purge Valve was opened, return
the valve to the closed state (tighten =
clockwise) once the 620A 4R lid is open.
The 620A 4R has a way to remove it’s lid
completely , for example when used in an indoor
laboratory environment. With the 620A 4R
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 620A 4R 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
620A 4R front panel.
620A 4R
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)