Installation
14
3A1937C
13.Sensor Resistance Checks
The heated platen system includes a heat sensor and
controller for each of the two optional heated zones. To
check sensor 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.
3. Replace any parts that have resistance readings
that do not comply with the ranges listed in Table 1.
NOTE: Check resistance at ambient room tempera-
ture (63°– 77°F [17°– 25°C]
).
14.Heater Resistance Checks
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 Table 2. Heater terminal pins are
connected to the HPTCM.
3. Replace any parts whose resistance readings do
not comply with the ranges listed in Table 2.
NOTE: Check resistance at ambient room tempera-
ture (63°– 77°F [17°– 25°C]
).
Conduct these electrical checks with the main dis-
connect OFF.
Table 1: RTD Sensor Resistance
Zone Component
Connector Pin
Range (ohms)
1, 2 Platen
Pin 1 to 3
1050-1100
F
IG
. 3: RTD Connector Pins
Conduct these electrical checks with the main power
disconnect OFF.
Table 2: Resistance Chart of All Heaters
Zone Component
Between
Terminals
Unit
Voltage
Range
(ohms)
1, 2
Platen
1 and 3
240
15 +5/-5
F
IG
. 4: Heater Terminal Pins
1
3