Repair Primary Heater; Switch - Graco Reactor 2 Repair Parts

Repair Primary Primary Heater
Repair Repair Primary
Replace Heater Heater Element Element
Replace Replace Heater Element
1. Follow Before Beginning Repair, page
2. Wait for heaters to cool.
3. Remove heater cover.
4. Disconnect heater element wires
from heater wire connector inside
the electrical enclosure. See
Electrical Schematics, page
with an ohmmeter.
System System System Total
Total Total
Heater
Heater Heater
Wattage
Wattage Wattage
H-30 10 kW
H-30,
15 kW
H-40,
H-XP2
H-40,
20 kW
H-50,
H-XP3
5. If the RTD is on the heater element, remove
the RTD (512) to avoid damage. See
Replace RTD, page
6. Use a wrench to remove the heater element
(508). Inspect element. It should be
relatively smooth and shiny. Replace
element if there is a crusted, burnt ash-like
material adhered to the element, or if the
sheath shows pitting marks.
7. Install the new heater element (508), holding
the mixer (510) so it does not block the RTD
port. Torque to 120 ft-lb (163 N•m).
8. Install the RTD (512), if removed earlier. See
Replace RTD, page
9. Reconnect the wires inside the electrical
enclosure.
Line Line Line Voltage Voltage Voltage
The heater outputs its rated wattage at 230 VAC.
Low line voltage will reduce power available and
the heater will not perform at full capacity.
334946J
Heater
Heater
52.
105. Test
Element Ohms
Element Element Ohms Ohms
per
per per
element
element element
2,550 18–21
2,550 18–21
2,550 18–21
64.
64.
Repair Heater Repair Repair Heater Overtemperature Heater Overtemperature Overtemperature

Switch

Switch Switch
1. Perform Shutdown, page
2. Wait for heaters to cool.
3. Remove heater cover (#10).
4. Disconnect overtemperature switches (509)
from cable (88). Test across spade terminals
with ohmmeter.
a. If the resistance is not approximately 0
ohms, the overtemperature switch (509)
needs to be replaced. Go to step 5.
b. If the resistance is approximately 0
ohms, inspect cable (88) to ensure
it is not cut or open. Reconnect the
overtemperature switch (509) and cable
(88). Disconnect cable from the TCM.
Test from pin 1 to 3 and 1 to 4. If the
resistance is not approximately 0, and
switches are 0, replace cable in place or
original cable.
5. If the switch fails the test, remove the
screws. Discard the failed switch. Apply a
thin layer of thermal compound 110009
and install a new switch (509) in the same
location on housing (501). Secure with
screws (513) and reconnect cables (88).
Repair
50.
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