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Repair
12
310798D
Transformer
Test Hose Continuity
2.
See Electrical Schematic, page 13. Remove wire
no. 1055 (red, 8 AWG) from solid state relay (2).
3.
Remove wire no. 1102 (red, 8 AWG) from tap set-
ting on top of transformer.
4.
Using an ohmmeter in continuity mode, check
between the two wires. There should be continuity.
5.
If test fails, remove jumper (102) from electrical
connector of last hose section and place in electri-
cal connector of first hose section. Check continuity
again. If continuity, continue testing each hose sec-
tion until failure is located. Replace/remove bad
hose section.
Transformer Primary Check
Transformer Secondary Check
1.
Turn power OFF
. Disconnect power supply.
Leave hose plugged in.
1.
Ensure that all harnesses, cables, and connectors
are properly connected. Connect hose.
2.
Connect power supply. Turn power ON
.
3.
Set heat control to desired hose temperature.
WARNING
Read warnings, page 3. Step 4 measures line voltage
and should be done by a qualified electrician. If work is
not performed properly it may cause electric shock or
other serious injury.
4.
See Electrical Schematic, page 13. Measure volt-
age at two bottom terminals of 20 A circuit breaker
(9). Measurement should be line voltage. If not,
check that lamp is illuminated red. Continue toward
disconnect switch until loose connection is found. If
all voltages are good and transformer secondary
test fails, replace transformer.
1.
Ensure that all harnesses, cables, and connectors
are properly connected. Connect hose.
2.
Connect power supply. Turn power ON
.
3.
Set heat control to desired hose temperature.
WARNING
Read warnings, page 3. Step 4 measures line voltage
and should be done by a qualified electrician. If work is
not performed properly it may cause electric shock or
other serious injury.
4.
See Electrical Schematic, page 13. Measure volt-
age across transformer hose tap (R) you are using
and top terminal on 50 A hose circuit breaker (10).
See T
ABLE
2 for readings. If reading is correct,
replace temperature control. If reading is wrong,
replace transformer.
Table 2: Transformer Voltage Readings
Transformer Tap
Reading (VAC)
50’
15-25
100’
26-42
150’
36-60
200’
47-77