Graco GM100 Glue Gun User Manual


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Troubleshooting
CheckCheck
Check
HeaterHeater
Heater
Check the continuity of the heater to verify proper
resistance. If there is no continuity, the heater has
failed and needs to be replaced.
1. Disable applicator. See
Before Beginning Repair, page 20.
2. Check resistance of the heater using a
multi-meter between the pins of the cordset
connector. See connectors illustrations in cordset
pin tables.
3. Replace the heater cartridge if the
resistance reading is outside the
range or if there is no continuity. See
Replace Heater Cartridge, page 20.
CordsetCordset
Cordset
CheckCheck
Check
PinsPins
Pins
ModelModel
Model
Resis-Resis-
Resis-
tancetance
tance
ValuesValues
Values
Slim Models
365–405
Ohms
Dual and Dual
Low Prole
Models
180–200
Ohms
24W087,
24X039,
or 24X760
Pt 100
(385) RTD
Cordset
A and C
Quad and
Quad low
Prole Models
145–165
Ohms
Slim Models
365–405
Ohms
Dual and Dual
Low Prole
Models
180–200
Ohms
24W088,
24X040, or
24X761 Ni
120 RTD
Cordset
1 and 2
Quad and
Quad low
Prole Models
145–165
Ohms
TableTable
Table
11
1
24W087,24W087,
24W087,
24X039,24X039,
24X039,
oror
or
24X760,24X760,
24X760,
PtPt
Pt
100100
100
(385)(385)
(385)
RTDRTD
RTD
CordsetCordset
Cordset
PinPin
Pin
DescriptionDescription
Description
A
Thermal Cutoff
B
Ground
C
Heat
D
RTD (White)
E
RTD (Red)
TableTable
Table
22
2
24W088,24W088,
24W088,
24X040,24X040,
24X040,
oror
or
24X761,24X761,
24X761,
NiNi
Ni
120120
120
RTDRTD
RTD
CordsetCordset
Cordset
PinPin
Pin
DescriptionDescription
Description
1
Thermal Cutoff
2 Heat -
3
RTD (White)
5
RTD (Red)
G Ground
18334627D
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