Cleveland SteamCraft 10 Service Manual page 152

Page 146 SteamCraft 10 Service Manual, Chapter 6
Figure 6-43. Ohmmeter Connections for
Heater Coil Resistance
Figure 6-44. Megger or Ohmmeter
Connection for Insulation Resistance
Printed 3/93
6. Refer to Figure 6-44, and check the resistance of each heater and dryer element.
Compare the meter readings with the values listed in Tables 6-1 and 6-2.
• If any of the heater coils do not have the resistance specified in Table 6-1,
replace the element.
• If the dryer element does not have the resistance specified in Table 6-2, replace
the element
• If all three heater coils have the resistance specified in Table 6-1, continue this
procedure with step 7.
• If the dryer element has the resistance specified in Table 6-2, continue this
procedure with step 7.
Table 6-1. Steam Generator Heater Elements
PART NO. WATTS
103881 8000
1038811 8000
1038815 8000
1038812 8000
1038814 8000
Table 6-2. Steam Generator Dryer Elements
PART NO. WATTS
104306 300
1043061 300
1043062
300
1043063 300
1043064 300
7. Prepare the SteamCraft 10 components for testing the heater and dryer element
insulation resistance as described below. Perform the insulation resistance tests as
described in step 8.
a. Set megohm meter (megger) at 500 or 1000 volts. If a megger is not available,
zero adjust an ohmmeter on the highest scale.
b. Check that the water in the float cylinder is at operating level.
c. Continue this procedure with Step 8.
8. Refer to Figure 6-45, and check the insulation resistance of each heater and dryer
element lead to ground. Use the element assembly stud as ground.
• If the resistance is infinite (greater than 1 megohm) on all coils of the heater
element, the heater element passes the insulation test. If the resistance is infinite
(greater than 1 megohm) for the dryer element, the
Models 24-CGA-10 and 24-CEA-10
VOLTS OHMS/COIL +/-5%
208 16
240 22
380 54
415 65
480 86
VOLTS OHMS +/-5%
208 144
240 192
480 768
380 481
415 570
Cleveland Range, Inc.