EZ 1000 Series II Melter Part Manual
Chapter 8 Troubleshooting
©2019 by Crafco, Inc. All Rights Reserved………………...………………………………..……………...Troubleshooting 8-37
NOTE:
Fig. 8-13 Pump Circuit Schematic
while troubleshooting the pump electrical system.
Step
Possible Cause
If . . .
1
Is the amber light “ON” on the Din Plug when
the trigger is actuated? For pump forward
din plug location Refer to
•
Yes, then the pump should be working. If it
•
No, go to Step 1a.
1a
Unscrew the center screw of the din plug so
you can pull the din plug up 1/4” in order to
check voltage.
Is there 12Vdc from side post to side post?
•
Yes, the electrical system for the pump is
working properly. Refer to
Pump Hydraulic Troubleshooting
•
No, go to Step 4.
2
Is there 12Vdc between red wire labeled
“TRIGGER RED” in junction box and nearby
ground source?
•
Yes, go to Step 2a.
•
Step 10 for an
Electric Hose.
•
No, for a Standard Hose is normal because
this circuit is not used.
2a
Is there 12Vdc between green wire labeled
“TRIGGER GRN” in junction box and nearby
ground source?
NOTE:
Wand trigger must be actuated
during this test.
•
Yes, go to Step 3.
•
Table 8-29 Trigger is not Working
3
Is there 12Vdc between green wire on
terminal #14 of pump relay and black wire
terminal #13 pump relay?
NOTE:
Wand trigger must be actuated
during this test.
•
Yes, go to Step 5.
•
No, check for loose or broken wire between
relay and junction box.
4
Is there 12Vdc between the brown wire
located on the lower set of terminal blocks,
top right terminal and 5
th
terminal down on
the right blue ground wire?
NOTE
:
Wand Trigger must be actuated or
pump switch in “ON STANDARD” position
during this test.
•
Yes, replace Din Plug.
•
No, go to Step 4a.
4a
Is there 12Vdc between the blue wire located
on the lower set of terminal blocks, top left
terminal and 5
th
terminal down on the left
black ground wire?
NOTE
:
Trigger must be actuated or pump
switch in “ON STANDARD” position during
this test.
•
Yes, replace terminal block.
•
No, go to Step 5.
Table 8-33 Pump Electrical Troubleshooting
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