CONTROL RELAYS K3 AND K4 TESTING AND REPLACEMENT.
This task covers. a.. Testing b. Removal c. Installation
4, Section III, Appendix B
Control box cover open.
General Safety Instructions:
Lock Washers (2)
Lock Washer (1) (K3)
Lock Washer (1) (K4)
High voltage and exposed rotating parts are
used in the refrigeration unit . Personal injury
Sleeving Insulation (3) (K3)
can result if power is connected.
Sleeving Insulation (2) (K4)
Marker tags (4) (K3)
Marker tags (6) (K3)
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.
B. Continuity should be indicated. If no continuity was indicated, replace control relay.
to 4 (K3 and K4) and 9 to 6 (K4). No continuity should be indicated. If continuity was indicated, replace control
If no failure was indicated, close control panel (3). Install two new lock washers (2) and bolts (1).