Component Test Procedures; Fuses - Cleveland steamcraft 21-CET-8 Service Manual

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
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