Nordson NH-4, Customer Product Manual, Page: 24 / 75

NH-4 Fluid Heaters
20
Part 1602369-03
E 2020 Nordson Corporation
Fluid Heating Reservoir Removal
1. Remove the thermostat. Refer to Thermostat Removal on page 17.
2. Remove the heat limiter. Refer to Heat Limiter Removal on page 19.
3. Remove the heater cartridge. Refer to Heater Cartridge Removal on
page 19.
4. See Figure 9. Disconnect the fluid inlet (8) and fluid outlet fittings (4).
Remove the O-rings (3, 7) from the fittings and discard them.
5. See Figure 8. Loosen the set screws (1) securing the fluid heating
reservoir to the electrical enclosure. Screws are visible when the
enclosure cover is removed.
6. Rotate the fluid heating reservoir assembly counterclockwise to remove
it from the electrical enclosure.
1
2
3 4
5
6
7
8
9
Figure 9 Heater Reservoir Replacement
1. O-ring
2. Fluid passage body
3. O-ring
4. Outlet fitting
5. O-ring 6. Retaining ring
7. O-ring
8. Inlet fitting
9. High-pressure housing