Greenlee 851 ユーザーガイド
Greenlee Textron / Subsidiary of Textron Inc.
7
4455 Boeing Dr., Rockford, IL 61109-2988 815/397-7070
851 Heater for PVC Conduit
Troubleshooting
PROBABLE CAUSE
PROBLEM
PROBABLE REMEDY
Wiring Diagram
WHITE
BLACK
SWITCH
GROUND
PILOT LIGHT
HEATING
ELEMENT
1
2
3
5
4
15
8
7
13
9
10
11
12
14
6
Pilot light does not light up.
Pilot light is faulty.
Disconnect power. Check continuity
between terminals 13 and 14. Replace
pilot light if this terminal pair does not
have continuity.
between terminals 13 and 14. Replace
pilot light if this terminal pair does not
have continuity.
Heater does not heat up.
No power at supply circuit.
Check power supply with a voltmeter.
Verify that the circuit has the appro-
priate voltage and current rating.
See the Specifications section of this
manual.
Verify that the circuit has the appro-
priate voltage and current rating.
See the Specifications section of this
manual.
Switch is faulty.
Disconnect power. Turn the power
switch to the ON position. Check
continuity between:
switch to the ON position. Check
continuity between:
• terminals 4 and 8
• terminals 5 and 7
• terminals 5 and 7
Replace the switch if either terminal
pair does not have continuity.
pair does not have continuity.
Heating element is faulty.
Disconnect power. Allow heating
elements to cool. Disconnect wires at
terminals 9, 10, 11 and 12.
Check continuity between:
elements to cool. Disconnect wires at
terminals 9, 10, 11 and 12.
Check continuity between:
• terminals 9 and 10
• terminals 10 and 11
• terminals 10 and 11
Replace the corresponding heating
element if either terminal pair does
not have continuity.
element if either terminal pair does
not have continuity.
Power cord is faulty.
Disconnect power. Check continuity
between:
between:
• terminals 1 and 4
• terminals 2 and 5
• terminals 3 and 6
• terminals 2 and 5
• terminals 3 and 6
Replace the power cord if any terminal
pair does not have continuity.
pair does not have continuity.