SEI RED DRAGON User manual

RED DRAGON
SERVICE MANUAL
2023A

RED DRAGON SERVICE MANUAL
Version: 2023A
Part Number: 005854
Maintenance Level: Organizational (O)
PLEASE READ BEFORE USING.
This manual is applicable to the following models:
DE002000 (#005851)
PATENTS
AU2014200904
CA2679269
US8776693
Copies of this manual are available from SEI.
The manual is available on the SEI website.
Register for manual update notifications at [e-mail]
SEI INDUSTRIES LTD.
7400 Wilson Avenue
Delta, B.C. Canada
V4G 1E5
Phone: [phone]
Fax: [phone]
[e-mail]
www.sei-ind.com
COPYRIGHT © 2007 SEI INDUSTRIES LTD. ALL RIGHTS RESERVED

Revision Summary
Version
Release Date
Revision Description
Pages
App.
2007A
Dec-2007
•Initial Release
-
MDT
2010B
Sep-2010
•Changed tank caps
•Added glycol filters
•Added water filter
•Changed hopper linkage
•Removed motor relay
19, 28
18, 20
27, 29
9,
65, 108
MDT
2013B
July-2013
•Revised format
-
MDT
2015C
Feb-2015
•Added warranty details
•Added MSDS appendix
117
118
MDT
2016C
Aug-2016
•Added patent numbers
-
MDT
2018D
Jan-2018
•Changed tank caps
22, 32
MDT
2023A
Apr-2023
•Changed water check valves
•Changed drive motor, mount, coupling, & hardware
33
14, 18,
88, 89,
90
MDT
VALIDATION OF OPERATIONS DESCRIBED IN THIS MANUAL
The maintenance operations described in this manual have been checked in manufacturer's
workshops by an exact carrying out of dismantling, reassembly, test and repair instructions
which are detailed in this document.
These operations are those in use at the latest revision date of the document.

Table of Contents
Section 1: Introduction............................................................................................................ 1
Manual Overview......................................................................................................................................1
Section 2: Sphere Handling System....................................................................................... 3
Description................................................................................................................................................3
Sphere System Components .....................................................................................................................7
Sphere System Troubleshooting .............................................................................................................16
Section 3: Glycol System .......................................................................................................21
Description..............................................................................................................................................21
Glycol System Components....................................................................................................................22
Glycol System Troubleshooting..............................................................................................................25
Section 4: Water System ........................................................................................................31
Description..............................................................................................................................................31
Water System Components.....................................................................................................................32
Water System Troubleshooting...............................................................................................................35
Section 5: Control System......................................................................................................37
Control System Operation.......................................................................................................................37
Control System Components ..................................................................................................................45
Control System Troubleshooting............................................................................................................50
Section 6: Repairs for All Systems........................................................................................75
Hopper Repairs .......................................................................................................................................75
Feed Gate Repairs...................................................................................................................................80
Injection Head Repairs............................................................................................................................88
Glycol System Repairs............................................................................................................................92
Water System Repairs.............................................................................................................................97
Control System Repairs ........................................................................................................................103
Section 7: Supplier Cross Reference ..................................................................................111
Supplier Chart.......................................................................................................................................111
Alternate Supplier Contacts..................................................................................................................114
Section 8: Warranty ..............................................................................................................115
Appendix: Safety Data Sheet ...............................................................................................117

Section 1: Introduction
Red Dragon Service Manual 1
Section 1: Introduction
Manual Overview
This service manual complements the Red Dragon operator’s manual. It is intended to provide enough
information so that all service required on the machine can be performed locally.
Manual Organization
The dispenser’s functions have been organized into four major systems. Sections two through five in the
manual correspond to each of these systems.
Each section begins with a description of how the components of the system operate. Following that
description are expanded drawings that identify the system components in detail.
Finally, there are multiple troubleshooting procedures to identify common problems and offer possible
solutions. Once a problem has been diagnosed, section six details the repair procedures for all systems.
Section seven is a supplier cross reference for the non-proprietary parts used in the dispenser.
Skills Required
The service person needs to have an average mechanical aptitude and be competent in repairs with basic
hand tools. He/she also needs to be able to operate a multi-meter to perform continuity and voltage
measurements.
Tools Required
In addition to the tools provided in the Red Dragon tool kit, the following tools may also be required to
perform troubleshooting and repairs.
•multi-meter with voltage and continuity ranges
•0.050, 1/16, 5/64, 3/32, 7/64, 9/64, and 5/32 hex keys
•# 2 Phillips screwdriver
•1/4, 11/32, 3/8 and 1/2 combination wrenches
•10mm, 12mm, and 14mm combination wrenches

Section 1: Introduction
Red Dragon Service Manual 2
THIS PAGE INTENTIONALLY LEFT BLANK

Section 2: Sphere Handling System
Red Dragon Service Manual 3
Section 2: Sphere Handling System
Description
The purpose of the sphere handling system is to move the ignition spheres from the hopper, through the
injection head, to exit the aircraft.
Hopper
The hopper is an open top container that stores the unprimed spheres. On the bottom of the hopper is an
oscillating agitator which directs the spheres into one of two chutes. The lower ends of the chutes extend
past the body of the hopper and connect to the top of the gate assembly.
There are spring loaded stops located at the exits of the chutes. When the hopper is removed from the
gate assembly, these stops close to prevent the flow of spheres from the hopper. When the hopper is
returned to the machine, pins located on the gate assembly open the hopper stops.
The hopper agitator is driven by a motor through a cam and linkage. Power to the hopper motor is
supplied from the gate assembly via a multi-pin connector that automatically mates when the hopper is
installed onto the gate assembly.
Gate
The gate assembly controls the flow of spheres from the hopper into the injection head. As the spheres
exit the hopper, they enter two vertical sphere paths in the feed gate assembly. Each path is blocked by a
feed gate. These are cylindrical pins attached to a common feed control rod. The position of the feed
control rod and feed gates is controlled by two solenoids under direction from the microprocessor (see
Section 5: Control System).

Section 2: Sphere Handling System
Red Dragon Service Manual 4
When the open solenoid is energized, it withdraws a spring loaded locking pin from the groove in the feed
control rod. Once the feed control rod is unlocked, the feed rod spring forces the feed control rod to move
outwards, unblocking the sphere paths.
When the close solenoid is energized, it pushes the feed control rod inwards, causing the feed gates to
block the flow of spheres through the passages. The spring loaded pin re-enters the groove in the feed
control rod and locks the gates closed. In an emergency, the feed gate can be closed and locked by
pushing the manual feed gate knob located on the end of the feed control rod.