TM 10-4610-241-24
TO 40W4-13-42
2-26
TDS MONITOR ADJUSTMENT .
This task consists of:
Adjustment
INITIAL SET-UP:
Tools Required
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
Multimeter (Appendix B, Section III, Item 3)
Equipment Condition
Reference
ROWPU shut down (TM 10-4610-241-10).
Power shut down (Power Source Manual).
General Safety Instructions
WARNING
High voltages in this equipment can cause serious injury or death. When applying power
during a test, take proper measures to ensure safety of personnel. Never work on
electrical equipment unless there is another person nearby who is familiar with the
operation and hazards of the equipment.
Adjustment
a.
Loosen two captive screws (1) and open cover (2) on TDS monitor (3).
b.
Set TDS monitor mechanical zero as follows:
CAUTION
To prevent damage to TDS monitor, electrical power must be off when setting mechanical zero.
(1)
With power off, note position of monitor needle (4).
(2)
If needle (4) is not pointing at zero on meter scale (5), turn adjustment screw (6) left or right as required to obtain
correct indication.
c.
Adjust TDS monitor as follows:
(1)
Ensure TDS monitor cable assemblies are connected to ROWPU (TM 10-4610-241-10).
(2)
Pull out on four fasteners (7) and release panel meter (8) from circuit box (9).
(3)
Inspect fuse (10). Replace fuse if blown, burned, or broken.
(4)
Set multimeter to indicate voltage (0-10VDC).
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