Vulcan-Hart VSX Series Service Manual page 25

3. Remove the lead wires from the heating element and check the element resistance using a VOM.
A. If resistance readings are not correct, replace heating element.
1) To replace an element, drain water from boiler shell.
2) Remove cover of contactor box, remove electric wires to that element's terminals, remove bolts
through flange of element and pull element forward.
NOTE: When replacing an element, always use a new gasket and ensure that the flange and tube surfaces which
contact the gasket are clean. If removed element shows a pronounced scale build-up on its heating tubes, the
other elements should be removed and mechanically cleaned to remove the scale. This will prolong their life. DO
NOT immerse elements in a chemical solution to descale.
4. After new element is installed, check unit for proper operation.
NUMBER
TOTAL
VOLTAGE OF
KW
ELEMENTS
208 18 2
240 18 2
480 18 2
*220/380
18 2
240/415
208 24 4
240 24 4
480 24 4
*220/380 4
24
240/415
208 24 2
240 24 2
480 24 2
*220/380
24 2
240/415
208 36 4
240 36 4
480 36 4
*220/380
36 4
240/415
208 42 4
240 48 4
480 48 4
*220/380
48 4
240/415
NOTES:
1. Values in the table are nominal. Tolerance is +/-10 %.
2. Asterisk (*) indicates 3 phase/4wire.
3. Each heater has three internal elements.
4. 6.0 KW heaters used on older models and included for reference.
VSX SERIES STEAMER - SERVICE PROCEDURES
AMPERAGE
KW
PER LINE
PER
ELEMENT
1 PH 3 PH
9 87 50
9 75 44
9 22
9 25
6 116 68
6 100 58
6 29
6 57.8
12 116 68
12 100 58
12 29
12 34
9 100
9 87
9 44
9 50
10.5 117
12 116
12 58
12 67
Page 25 of 80
RESISTANCE
PER
ELEMENT
(OHMS)
14.42
19.20
76.80
19.20
21.63
28.80
115.20
28.80
10.82
14.40
57.60
14.40
14.42
19.20
76.80
19.20
12.36
14.40
57.60
14.40