521-OM0108.88
Copyright
2009 Nalco Company
6-12
Technical Help
(630) 305-CHEM
3D TRASAR
5500 - Installation & Operation Manual
Exit Tube
Clear
Tube
Exit Tube
Power
Switch
Figure PF1
Figure PF2
6.9.1 Cleaning Pellet Feeder Exit Tube
During operation an LED/Detector is used to detect a pellet falling to “prove” delivery
. This is how
the controller is alerted if the pellet feeder is empty or a malfunction occurred. The exit tube may
require cleaning should dust or dirt obstruct the LED light path.
To clean the tube, follow the procedure below:
STEP 1
-
Turn pellet feeder power “Off”. See Figure PF2 for location of pellet feeder power
switch.
STEP 2
-
Locate the
clear tube
assembly that connects the pellet feeder body to the
injection valve. See Figure PF1.
STEP 3
-
Directly above the clear tube assembly is the exit tube. Remove the clear tube
from the coupling immediately above the ball valve. No tools are required, it is a
snug but unglued connection.
STEP 4
-
Insert the tube brush (provided with the pellet feeder)and clean the exit tube.
DO NOT USE WATER. Use the brush ONLY. The LED is 1" to 2" up from the
bottom of the tube.
STEP 5
-
Replace the clear tube removed in Step 1.
STEP 6
-
Turn pellet feeder power “On”.
STEP 7
-
Manually feed a pellet at the 3D TRASAR controller from the pellet feeder diagnostic
screen. Press ‘
0
’ to feed a pellet.
STEP 8 -
At the pellet feeder diagnostic screen, verify that ‘
Sen
’ value is in the range of
3 to 7. If not, re-clean the tube and check again until satisfactory.
