TM 11-6625-298-14
assembly or part that does not affect proper
functioning is missing.
a. Inspect the equipment for damage incurred
c. Check to see whether the equipment has been
during shipment. If the equipment has been
modified. Equipment which has been modified will
damaged, report the damage on DD Form 6, as in
have the MWO number on the front panel, near
the nomenclature plate.) Check also to see whether
b. Check the equipment against the component
all currently applicable MWOs have been applied.
listing in table 1-1 and on the packing slip to see if
(Current MWOs applicable to the equipment are
the shipment is complete. Report all discrepancies
listed in DA Pam 310-7).
in accordance with paragraph 1-3. The equipment
should be placed in service even though a minor
Section II. INSTALLATION
dicator in a horizontal plane. Do not place
it in or near a strong magnetic field.
Required for Installation
(1) With the equipment prepared as in a
Since Ohmmeter ZM-21(*)/U is intended primarily
above, turn the hand generator crank at operating
for field use, there are no installation procedures
speed (approx 160 rpm). With the leads discon-
requiring tools or equipment.
nected the ohmmeter should indicate an infinite
a. Perform the following preoperational
(2) Short circuit the test leads by clipping
procedures:
them together, and turn the hand generator crank
(l) Unfold the hand generator crank to bring
at operating speed. The ohmmeter should indicate
it to its proper operating position.
zero resistance.
(2) Connect the spade-type terminals of the
(3) If a further check is desired, and a resistor
test leads to the line and ground terminals.
of known value is available, connect it between the
b. For a simple check of the equipment, proceed
test leads and turn the hand generator crank. The
as follows:
ohmmeter should indicate the known value of the
NOTE
resistor.
The ohmmeter should be operated while at
rest on a firm level surface,with the in-
