Thermostat Adjustments; Shutdown - Nordson NH-4 Customer Product Manual

Hide thumbs Also See for NH-4:

Table of Contents

Thermostat Adjustments

[EXT ADJ] If the thermometer is not indicating the desired temperature, adjust the

thermostat control. If using multiple heaters, adjust the last heater before the filter until

the desired temperature is obtained, then adjust the thermostats on the remaining

heaters to the same setting.

[INT ADJ] If the thermometer is not indicating the desired temperature, proceed as

follows:

1. Remove the power from the heater(s).

WARNING:

Make sure the spray activity is not in progress while the enclosure cover is

removed from the heater. Failure to observe this warning may result in fire or explosion.

2. Remove the enclosure cover from the heater(s).

3. Adjust the thermostat control. If using multiple heater installation, adjust the

thermostat of the last heater before filter to midrange and all other heaters to zero

(extreme counterclockwise position).

4. Apply power to the heater(s) and observe the thermometer.

5. Repeat steps 1 through 4 until the desired fluid temperature is indicated on the

thermometer. If using multiple heaters, adjust thermostat controls on the remaining

heaters to the same setting as the last heater, and replace covers.

NOTE:

If the temperature appears to vary slightly during spraying operation, adjust the

thermostat control on the last heater. Refer to step 5.

NOTE:

Consider the following if it is necessary to adjust the thermostat at the extreme

high range in order to maintain the proper fluid temperature:

• Replace the hose with an insulated hose

• Relocate the hose or heater

• Install an additional NH-4 heater assembly

CAUTION:

Always shut down the heater and continue to circulate coating material

through the heater as it cools to avoid material curing inside the heater fluid passages.

Cured coating materials can clog the heater and damage it.

1. Remove power from the heater 1−15 minutes before shutting down the pump.

2. Shut down the pump. Refer to the applicable pump manual for shutdown procedures.

NH-4 Heaters

1602369-05

Table of Contents