Check Heater Resistance - Graco Therm-O-Flow 20 Instructions - Parts Manual

Setup

Check Heater Resistance

To reduce risk of injury or damage to equipment,
conduct these electrical checks with the Main Power
Switch OFF.
1. Turn Main Power Switch OFF.
Table 4 Heaters
Resistance Across
Component
Terminals
SSR-1 -5 to SSR-1-6,
107 to 108
SSR-1-5 to SSR-1-6,
107 to 108
Platen SSR-1-5/107 to
Terminal 5/6, Terminal
5/6 to SSR-1-6/108
Any Terminal to Case
2610 to 2620, T1/B1 to
Pump
T3/B3
22
2. Make electrical resistance checks for the
components.
3. Replace any parts whose resistance readings do
not comply with the ranges listed in tables.
NOTE: Check resistance at ambient room temperature
63°-77°F (17°-25°C).
Unit Input Platen or Pump
Voltage Module
220 - 240V All configurations
380 - 600V All configurations
All voltage
versions
All voltage
versions
Resistance Values
12.1 to 16.6 Ohms
48.6 to 62.6 Ohms
24.3 to 31.3 Ohms
All Greater than 70,000 Ohms
All 43.2 to 53 Ohms
334129S