Dwyer GFC User Manual
Page 26
7.4.3 Change Decimal Point
To change the decimal place on the LCD display readout, simply move the jumper
to the appropriate location on the 8-pin header block. The numbers are printed to
the side of the connections. Do not attempt to place more than one jumper for
decimal setting.
8. TROUBLESHOOTING
8.1 Common Conditions
Your Mass Flow Controller/Controller was thoroughly checked at numerous qual-
ity control points during and after manufacturing and assembly operations. It was
calibrated in accordance to your desired flow and pressure conditions for a given
gas or a mixture of gases.
It was carefully packed to prevent damage during shipment. Should you feel that
the instrument is not functioning properly please check for the following common
conditions first:
Are all cables connected correctly?
Are there any leaks in the installation?
Is the power supply correctly selected according to requirements? When
several meters are used a power supply with appropriate current rating
should be selected.
Were the connector pinouts matched properly? When interchanging with
other manufacturers' equipment, cables and connectors must be carefully
wired for correct pin configurations.
Is the pressure differential across the instrument sufficient?
22
JUMPER POSITION
"0"
"1"
"2"
"3"
MAXIMUM SCALABLE DISPLAY READING
1999
199.9
19.99
1.999