Tweco SC11 - Manual (Page 29)

Manual 0-2556 5-1 CUSTOMER/OPERATOR SERVICE
SECTION 5:
CUSTOMER/OPERATOR
SERVICE
5.01 Introduction
This Section describes basic maintenance procedures per-
formable by operating personnel. No other adjustments
or repairs are to be attempted by other than Thermal
Dynamics Trained personnel.
WARNINGS
Disconnect primary power at the source before dis-
assembling any part of the cutting system.
Frequently review the Important Safety Precau-
tions in Section 1. Be sure the operator is equipped
with proper gloves, clothing, eye and ear protec-
tion. Make sure no part of the operator’s body comes
into contact with the workpiece while the cutting
system is activated.
Sparks from the cutting process can cause damage
to coated, painted, and other surfaces such as glass,
plastic and metal.
5.02 Routine Maintenance
A. Standoff Control
The only routine maintenance required for the Stand-
off Control components is a thorough cleaning and
inspection, with the frequency depending on the us-
age and the operating environment.
To clean the Standoff Control, first make sure that
the power is disconnected. Open the Standoff Con-
trol enclosure and blow out any accumulated dirt and
dust with compressed air. The unit should also be
wiped clean. If necessary, solvents that are recom-
mended for cleaning electrical apparatus may be
used.
While the enclosures are open, inspect the wiring in
the unit. Look for any frayed wires or loose connec-
tions that should be corrected.
B. Lifter Moter assembly
The Rollers and Slides on the Lifter Motor Assembly
should be checked, cleaned and adjusted required.
5.03 Troubleshooting Guide
A. Troubleshooting
This Sub-Section covers troubleshooting that requires
dissasembly and electronic measurements. It is helpful
for solving many of the common problems that can arise
with the Standoff Control Assembly.
WARNING
There are extremely dangerous voltage and power
levels present inside this unit. Do not attempt to
diagnose or repair unless you have had training in
power electronics measurement and troubleshoot-
ing techniques.
Specific test procedures are referenced by the trouble-
shooting guide.
The guide has two sections as follows:
Section 5.04 - Troubleshooting Specific Problems
Section 5.05 - Test Procedures
B. How to use this Guide
The following information is a guide to help the Cus-
tomer/Operator determine the most likely causes for
various symptoms.
This guide is set up in the following manner:
X. Symptom (Bold Type)
Any Special Instructions (Text Type)
1. Cause (Italic Type)
a. Check/Remedy (Text Type)
Locate your symptom, check the causes (easiest listed first)
then remedies. Repair as needed being sure to verify that
unit is fully operational after any repairs.
NOTE
Many signals are transfered between various as-
semblies on interconnecting cables. If these cables
become faulty they can then cause various prob-
lems. Do not forget about these cables when
troubleshooting.