COMPONENT TEST PROCEDURES
Fuses
The following procedures are detailed tests to determine whether or not particular
SteamCraft 3.1 components are operable. Before starting the individual component
procedures, refer to Chapter 2 and complete the Final Setup and Checkout
Procedures. During these procedures, observe component performance. Then
perform the appropriate component tests to check specific parts.
• All exterior drains and drain valves are open.
• All exterior water supply valves are open.
• The main power switch is in the on position.
• The right side access cover is removed (Figure 5-12).
1. Set the ON/OFF switch in the ON position and observe the red indicator light.
• If the indicator lights, the fuses are good. End this procedure here.
• If the indicator does not light, continue this procedure with step 2.
2. Set the voltmeter for the 500 VAC scale.
3. Refer to Figure 5-13, and check the voltage reading from fuse-to-fuse on the line
side (line side connections go to the terminal block).
• If the reading is 0 VAC or a low voltage:
a.
Test the main power switch.
b. Test and inspect the 230 VAC wiring.
• If the reading is 230 VAC, proceed to step 4.
4. Check 230 VAC from fuse-to-fuse on load side. The load side connections go to
the transformer.
• If the reading is 230 VAC, the fuses are OK.
a. Test the transformer.
b.
Check the wiring line and load side of transformer.
c. Test the ON/OFF switch.
• If the reading is 0 VAC or a low voltage, proceed to step 5.
5. Check voltage across each fuse, line side to load side.
• If the readings are 0 VAC across both fuses, test the transformer for an open
primary.
Model 21-CET-8 Service Manual
Page 81
Printed 12/90