RKI Instruments GD-K77D - Manual (Page 14)

9 • Important Safety Procedures Model GD-K77D Operator’s Manual
Figure 5: Flow Diagram
Important Safety Procedures
WARNING: Before installing and operating the Model GD-K77D, please read the
following list of precautions before continuing:
Power Source. Check the power source before turning on the Model GD-K77D. Make
sure the power source voltage is within the specified voltage range.
Ground Wire. Do not cut or remove the ground wire to the Model GD-K77D.
Fault Protection. When an electrical fault has occurred (e.g., the fuse blows), do not
attempt to operate the Model GD-K77D. Before starting up the Model GD-K77D, make
sure an electrical fault has not occurred.
Fuse. When replacing the Model GD-K77D’s fuse, turn off the power to the unit. Use only
replacement fuses that have the correct current and voltage ratings. Do not use any fuse
other than the one specified for the Model GD-K77D. Using a non-specified fuse will
cause a short and damage the Model GD-K77D.
Explosive Gases. Do not operate the Model GD-K77D in environments containing
explosive gases. The Model GD-K77D is not explosion-proof; its internal circuitry may
cause a spark which could ignite combustible gas or vapors.
External Connections. After making sure the Model GD-K77D is properly grounded and
an electrical fault has not occurred, wire all external connections to the Model GD-K77D.
Lithium Battery. When the lithium battery is replaced, turn all power off to the Model GD-
K77D before removing the battery. Do not recharge, burn, mutilate, or expose the lithium
battery to temperatures greater the 212
o
F (100
o
C) because it may leak or explode. Do
not immerse the battery in water.
GAS OUT GAS IN
Sens or
Pum p
Baffle
Flow meter
Low flow sens or