TM9-4110-254-14
4-22.
RESISTOR R1 ASSEMBLY TESTING AND REPLACEMENT
This task covers a. Testing b. Removal c. Assembly d. Installation
INITIAL SETUP
Equipment Conditions:
General Safety Instructions:
disconnected.
WARNING
Control box cover door raised and latched.
High voltage and exposed rotating parts are
Materials/Parts:
used in the refrigeration unit. Personal injury
can result if power is connected.
Lock Washers (2)
Marker Tags (4)
Sleeving Insulation (2)
a.
(1)
Be sure power has been disconnected at the source and remove two bolts (1) and lock washers (2). Open
control panel (3). Discard lock washers.
(2)
Remove cap (4) and lamp (5).
(3)
Using multimeter set to measure resistance, check resistance between resistor assembly (6) leads. Indicated
resistance should be between 4 75 k ohms and 5 25 k ohms. If indicated resistance was outside specified
range replace resistor assembly.
(4)
If no failure was indicated, install lamp (5) and cap (4).
(5)
Close control panel (3). Install two new lock washers (2) and bolts (1).
b.
Removal.
(1)
Be sure power has been disconnected at the source and remove two bolts (1) and lock washers (2). Open
control box panel (3). Discard lock washers.
NOTE
Terminal hardware is supplied with indicator base and hourmeter.
(2)
Tag wire leads and remove screw (7), lock washer (8), screw (9), and resistor assembly (6).
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