ITW Dynatec
D15/D25/D45 V6 DC L ASU Manual #20-63
Disassembly Page 8-1
Revised 10/14
Chapter 8
DISASSEMBLY & RE-ASSEMBLY PROCEDURES
Note: Re-read Chapter 1 “Safety Precautions” before performing any disassembly procedures. All
disassembly procedures must be performed by qualified, trained technicians.
Disassembly Procedures
Note: Use the exploded-view drawings referenced with each procedure in conjunction with the in-
structions outlined in this chapter. Read the
“cautions” on page 8-4 before re-assembling the ASU.
To Remove Rear Cover (Hopper)
1. Loosen 8 button head screws, 2 screws along the
bottom of the rear cover and the screw near the top
corner of the hopper side cover.
2. Lift cover up and off.
Mechanical Thermostat (Over-temp) Replacement
Use the latches to remove the right-side hopper
cover.
Remove the 2 screws and slip the terminals and the
hopper ground wire off of the thermostat before re-
moving the thermostat from the base of the hopper.
To Access the RTD Sensors
Use latches to remove the hopper access side cover.
a.
RTD for ASU: Each ASU has one RTD located
in the base of the hopper. This RTD slips into its
adapter and is easily plugged in electrically.
b.
RTD f or Drop-in Grid: (see pg. 10-11 for dia-
gram) If the optional drop-in grid is installed, there
is a second RTD located in the grid. This RTD slips
into its adapter and is easily plugged in electrically.
Over-temp
Thermostat
Hopper Side
Cover (1 of 2)
Front
Door
ASU Sensor
Filter
Manifold
Hopper
Hopper
Base
Over-temp
Thermostat