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A-l HANDGUN
MANUAL
NO.
26-4
Page 6-1
-
SECTION 6
TROUBLESHOOTING
INTRODUCTION
This section provides troubleshooting procedures for the following:
l
Material does not flow when gun is triggered (gun heats)
l
Material leaks from nozzle
l
Material leaks from swivel connector
l
Material leaks from seat or insulator block
l
Hose or gun fails to heat
l
Gun overheats
The A-l handgun wiring diagram is located at the end of this section.
Note that any fault may have a number of reasons for occurring.
Check all possible causes for any given fault. Obvious causes of mal-
function such as broken wires, missing fasteners, etc., should be noted
during visual inspection and corrected immediately.
These tests are to be performed by qualified personnel observing
standard safety practices
A
A 111
A
A
WARNING: Review Section 1, Safety Summary, before at-
tempting to troubleshoot
or repair this equipment.
WARNING: This equipment contains energized electrical
components with potentials that could be fatal. Discon-
nect and lock out input power to the system before remov-
ing any panels or performing troubleshooting
procedures.
WARNING: DO NOT attempt to loosen any part of the
manifold, hoses, or guns until the bulkmelter has been
turned off and pressure in the system has been relieved.
Failure to relieve system pressure could result in serious
burns.
WARNING: Wear safety glasses, safety gloves, and protec-
tive clothing to prevent injury from hot parts, material and
gun surfaces.
Publication P/N 108 061
0 NORDSON CORPORATION
1993
All Rights Reserved
Issued 3193
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