Graco Viscon LT Instructions-Parts List Manual page 15

Heater Cartridge
1. See Before Beginning Repair, page 14. Relieve
pressure.
2. Wait for heaters to cool.
3. Testing: Use a multimeter to check resistance
across cartridge leads per the Technical Data
chart. Also check that neither lead has continuity to
the cartridge case.
4. See F . 7 and Parts illustration on page 18.
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Loosen all four screws (12) from bracket (16) and
shield (21). Pull bracket assembly away from heater
housing (1) to remove heater cartridge (20) from
core. If necessary, plug (4) can be removed from the
bottom of core (2) so that cartridge can be pushed
out from underneath.
5. Disconnect heater cartridge from jumper
wires (22, CC) and heater thermostat switch (17,
HH). See F . 8.
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6. Connect new heater cartridge to jumper wire (CC)
and thermostat heater switch (H), then reassemble
heater in reverse order of disassembly.
22
20
F . 8
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3A2824B
CC
17
HH
TI7009a
Thermal Limit Sensor
1. See Before Beginning Repair, page 14. Relieve
pressure.
2. Wait for heaters to cool.
3. Testing: Check that you have continuity across the
two leads. If circuit is open, replace thermal limit
sensor (19). See F
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4. See F . 7. Loosen all four screws (12) from
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bracket (16) and shield (21). Pull bracket assembly
away from heater housing (1). To remove thermal
limit sensor (19) from core (2) pull upward with a
steady force.
5. Disconnect thermal limit sensor from jumper
wire (23, BB) and heater thermostat switch (17,
GG). See F . 9.
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6. Connect new thermal limit sensor to jumper
wire (BB) and thermostat switch (GG), then reas-
semble heater in reverse order of disassembly.
NOTE: Apply a thin film of heat sink compound 110009
to thermal limit sensor (19).
23
GG
BB
19
F . 9
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. 9
TI7010a
Repair
15