Emerson Oxymitter 5000 Instruction Manual page 107

Oxymitter 5000
SYMPTOM — NO TEST GAS FLOW (CONTINUED)
CONTINUED
FROM SHEET
1 OF 2
PLACE JUMPER BETWEEN CAL
RET TERMINAL AND EITHER HI
GAS OR LO GAS TERMINAL OF J3.
SEE NOTE 1.
IS THERE
FLOW?
NO
USE METER (SEE NOTE 2)
TO CHECK FOR SHORT
BETWEEN CAL RET AND NO GAS
TERMINALS OF J3.
IS THERE
A SHORT?
NO
DISCONNECT SOLENOID FROM
POWER SUPPLY BOARD AND USE
METER TO MEASURE ACROSS
TWO OUTER PINS OF BOARD
CONNECTOR. SEE NOTE 4.
CHECK BOTH SOLENOIDS.
IS THERE
+30VDC?
YES
DISCONNECT CAL GAS LINE
AT MANIFOLD OUTPUT PORT.
IS THERE
FLOW?
YES
REPLACE PRESSURE SWITCH
PER PARAGRAPH 4-10d.
Figure 5-16. SPS 4000 Troubleshooting Flowchart (Sheet 2 of 2)
Rosemount Analytical Inc. A Division of Emerson Process Management
INTERFACE BOARD IS
NOT SENDING SIGNAL.
YES
REPLACE INTERFACE
BOARD PER PARAGRAPH
4-10b.
YES
DISCONNECT CAL GAS
LINE AT CHECK VALVE.
REPLACE POWER
NO
SUPPLY BOARD PER
PARAGRAPH 4-10b.
NO
REPLACE SOLENOID
PER PARAGRAPH 4-10c.
NOTE 1: SECURELY TIGHTEN ALL J3 SCREW TERMINALS ON
POWER SUPPLY BOARD TO MAKE CONNECTIONS.
NOTE 2: USE A SIMPSON MODEL 260 OR EQUIVALENT
MULTIMETER.
NOTE 3: IF REPLACING THE CHECK VALVE DOES NOT
CORRECT THE PROBLEM, A CLOG COULD EXIST IN
THE RED SILICON GAS TUBE WITHIN THE PROBE.
NOTE 4: IF CHECKING CAL GAS 1 SOLENOID CONNECTOR J5,
ENSURE CAL RET TERMINAL IS JUMPERED TO HI GAS
TERMINAL OF J3. IF CHECKING CAL GAS 2 SOLENOID
CONNECTOR J4, ENSURE CAL RET TERMINAL IS
JUMPERED TO LO GAS TERMINAL OF J3.
YES
IS THERE
FLOW?
NO
DISCONNECT CAL GAS LINE
AT TOP FITTING OF CAL GAS
FLOWMETER.
YES
IS THERE
FLOW?
NO
REPLACE FAULTY CAL GAS
FLOWMETER PER PARAGRAPH
4-10h.
Instruction Manual
IB-106-350 Rev. 1.2
April 2001
REPLACE CHECK VALVE
PER PARAGRAPH 4-10e.
SEE NOTE 3.
REPLACE CLOGGED
CAL GAS LINE BETWEEN
CAL GAS FLOWMETER
AND CHECK VALVE.
35950003
Troubleshooting 5-21
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