Instruction manual

120-00004 REV A 10/6/2011 4000 DIGITAL MANUAL PAGE 22
5.0 Troubleshooting
Symptom
Corrective Action
No power.
Ensure the FUNCTION switch is not in the OFF position.
Are Ni-Cd batteries charged? (See Section 4.1)
Pump won’t run.
Ensure the FUNCTION switch is not in the OFF, or ZERO
position.
Are Ni-Cd batteries charged? (See Section 4.1)
Are INLET/OUTLET fittings plugged? Is any tubing kinked?
Can’t zero.
Are alkaline batteries low? (See Section 4.1)
Were alkaline batteries just replaced? (See Section 4.1)
Are alkaline batteries installed correctly? (Proper polarity)
No response to gas
Ensure the FUNCTION switch is not in the OFF, or ZERO
position. (Function switch must be in “Sample” position)
Are Ni-Cd batteries charged? (See Section 4.1)
Are INLET/OUTLET fittings plugged? Is any tubing kinked?
Are alkaline batteries low? (See Section 4.1)
Were alkaline batteries recently replaced? (See Section 4.1)
Are alkaline batteries installed correctly? (Proper polarity)
Is the SPAN/CAL turned all the way down (counter clock
wise)?
Is electrical lead(s) connected to sensor?
Is sensor secure in sensor clamp?
Make sure tubing is securely connected to pump and sensor.
Ni-Cads won’t charge
Are the Ni Cad batteries dead? (Remove from unit and check
with a voltmeter. Battery polarity is marked behind batteries on
panel.
voltmeter)