Thermal Dynamics (a Thermadyne Company) Merlin 3000 - Manual (Page 18)

INTRODUCTION & DESCRIPTION 14 Manual 0-2533
G. Hour/Counter Meters
Meter assembly containing two meters. One meter
indicates the total number of hours that the main cut-
ting arc has been on. The second meter counts the
number of times that the cutting arc has been started.
Both meters display a maximum of 999999 hours or
starts and cannot be reset.
H. Plasma/Secondary Gas Control
A remote control to select one of various plasma and
secondary gases, including secondary water, that can
be connected to the Power Supply.