Graco Therm-O-Flow 5 Instructions-Parts List Manual page 17

Heater Resistance Checks
WARNING
ELECTROCUTION HAZARD
To reduce risk of injury or damage to
equipment, conduct these electrical
checks with the main disconnect OFF.
To check heater resistance:
1. Make sure the power is off and that the disconnect
switch is in the OFF position.
2. Make electrical resistance checks for the compo-
nents. Refer to Schematics on page 67 for wiring
diagram information.
3. Replace any parts whose resistance readings do
not comply with the ranges listed in the chart
below.
NOTE: Check resistance at ambient room tempera-
F).
ture (63_ – 77_
Installation
Heaters for 3-Zone Control Panels
Zone
1
2
3
Heaters for 4-Zone Control Panels
Zone
1
2
3
4
Component Terminals
Follower 2L1 & 2L2
2L2 & 2L1
Dispense Hose 1532 &
1551
Dispense Gun 1602 &
1621
Component Terminals
Follower 3L1 & 3L3
3L2 & 3L3
Dispense Gun 1532 &
1551
Dispense Hose 1602 &
1621
Pump 5L1 & 5L2
Value
Range
98 – 127
ohms h
See
Technical
Data
supplied
w/Hose
See
Technical
Data
supplied
w/Gun
Value
Range
98 – 127
ohms h
See
Technical
Data
supplied
w/Gun
See
Technical
Data
supplied
w/Hose
187.2 ohms
" 24 ohms
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