Operation
4-3
Part 104373
−
03
E
2015 Nordson Corporation
Daily Startup
1. Place the siphon rod in the coating material, or pressurize the feed line
with coating material.
2. Open the air shutoff valve and adjust the air regulator until the pump
begins to operate slowly.
3. Allow coating material to flow from the filter drain. Close the drain.
4. Allow coating material to flow from the drain valve (circulating system).
Close the drain valve.
5. Adjust the air regulator to the required pressure and adjust the
circulation valve until the pump is operating at 8
−
10 strokes per minute.
WARNING:
Always circulate fluid through the heater while it is on. Without
proper circulation the heat limiter can fail, coating materials can cure inside
the heater and plug it, or solvents can vaporize, expand, and damage the
heater or other equipment. Failure to observe this warning could result in
property damage, personal injury, or even death.
6. Turn on the fluid heater, if used. Allow 10
−
15 minutes for the coating
material to reach the operating temperature. When the thermometer
reads within 2
C (5
F) of the operating temperature, adjust the
circulation valve to obtain the desired flow rate.
7. Start spraying.
Daily Shutdown
1. If a fluid heater is used, turn it off 10
−
15 minutes before shutting down
the pump. This prevents coating material from curing inside the heater
and plugging it.
2. Reduce the pump air pressure to zero.
3. Relieve the system fluid pressure by triggering the spray device or
opening the drain valve.
4. Perform the daily maintenance procedures.
NOTE:
Depending on the type of coating material used, you may be able to
leave the system filled with material overnight. Do not leave the system
open to air, as the coating material could cure and clog the system. If the
material contains solids that easily settle out, circulate material through the
system for several minutes the next morning before starting to spray. If the
system will be shut down for more than a few days, flush it and leave it filled
with flush material.