Welch Allyn Electrosurgical Unit - User Manual - Manual (Page 6)

5
8. Follow the instructions for use described in this manual; otherwise, compro-
mised safety, malfunction, injury to the operator and/or patient, or costly dam-
age to the unit may occur.
9. There are no user-serviceable parts within the housing. Only authorized Welch
Allyn service personnel can perform repairs to this equipment. For service
information, please contact Welch Allyn Customer Service at 1-800-535-6663.
I. PROFESSIONAL USE GUIDE (cont.)
Electrosurgical Unit • Instruction Manual
IMPROPER
Generator
Burn occurs at small
grounded contact
Surgeon touches electrode
to grounded object
Isolated
ESU
RF current flows from ground
through EKG pad, through
patient to return pad
IMPROPER
Generator
RF current flows
from electrode
Burn occurs at small
grounded contact
Isolated or
grounded ESU
Patient return pad touches
grounded table
RF current returns to patient
return pad via ground path
EKG
RF
RF EKG