Graco Therm-O-Flow 200, Instructions-Parts List Manual, Page: 21 / 109

Setup
Check Check Check Sensor Sensor Sensor Resistance Resistance Resistance
To reduce risk of injury or damage to equipment,
conduct these electrical checks with the main
power switch OFF.
The package includes up to twelve heat sensors and
controllers for each of the heated zones. To check
sensor resistance:
1. Turn main power switch off.
2. Wait for components to cool down to ambient
room temperature 63°-77°F (17°-25°C). Check
electrical resistance for the components.
MZLP MZLP
MZLP Zones
Zones
Zones
Pins Pins
Pins
Cable Cable
Cable 17C694
17C694
17C694
First Heat Zone A,J
Second Heat Zone C,D
First RTD G, K
Second RTD M, K
Earth Ground B
G
F
E
D
C
B
A
K
L
M
J
H
ti24580a
3. Replace any parts whose resistance readings
do not comply with the ranges listed in the RTD
Sensors chart below.
Table Table Table 3 3 3 RTD RTD RTD Sensors Sensors Sensors
MZLP MZLP MZLP MZLP MZLP MZLP Plug Plug Plug Component Component Component RTD RTD RTD Range Range Range
(Ohms) (Ohms) (Ohms)
Ram Plate 100 +/- 2
Fluid Pump 100 +/- 2
Heated
Accessory
1 100 +/- 2
1,2
Heated
Accessory
2 100 +/- 2
Heated
Accessory
3 100 +/- 2
1
3,4
Heated
Accessory
4 100 +/- 2
Heated
Accessory
5 100 +/- 2
5,6
Heated
Accessory
6 100 +/- 2
Heated
Accessory
7 100 +/- 2
2
7,8
Heated
Accessory
8 100 +/- 2
Heated
Accessory
9 100 +/- 2
9,10
Heated
Accessory
10 100 +/- 2
Heated
Accessory
11 100 +/- 2
3
11,12
Heated
Accessory
12 100 +/- 2
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