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THIS TEST KIT COMBINES THE FOLLOWING FUNCTIONS:
A MILLIVOITMETER with 3 direct reading scales for checking open
circuit millivoltage of Thermocouple Leads and Pilot Generators.
A PERFORMANCE TESTER with a source of power for holding Baso
controls open for taking open circuit millivolt readings of the Thermo-
couple while the main burner is in operation.
A MILLIAMMETER with 3 direct reading scales for checking current
dropout range of Baso Power Unit Assemblies.
A CONTINUITY TESTER for detecting a broken or open circuit.
MODEL 120 BASO TEST KIT GENERAL INSTRUCTIONS
When using meter, plugs must be inserted into jacks firmly and squarely.
Adapters
and nuts of thermocouples must be clean and tight. Any meter fluctuation caused by
the movement of these parts shows loose connections. Poor connections will cause
false readings. Replace batteries with positive or center terminals up.
WARNING
Do not use this meter to measure any outside current.
Do not use this meter to measure AC voltages.
This meter
is
designed and calibrated far DC voltages up to 900
MILLIVOLTS only. Any attempt to measure AC current or DC current
over 900 MILLIVOLTS will damage the meter.
Do not operate meter so as to cause needle to swing violently to right
to limit of travel. To prevent violent needle swing, set selector switch
to proper range before attaching test cables.
Please check this
instrument for damage immediately upon arrival
of shipment.
.12O-2
BASOii
B-YEL[OW
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Summary of Contents for Baso 120-2
- Page 2 bent terminal...
- Page 3 light pilot burner In the turn-down test, the pilot flame is reduced to the point that the TC open-circuit output is at the turn-down level. The pilot must be able to light the main burner within 4 seconds in this condition.
- Page 7 milliamp Plug into mA jack, not mV jack.
- Page 10 milliamps...
- Page 20 January 1961...
- Page 21 The mA jack is always a current SOURCE under control of the adjustment knob. The mV jack is always an input. bent terminal...
- Page 22 Locate the pilot burner in such a position that it does not receive the full force of igniting or extinguishing puffs from the main burner. • Locate the pilot burner in a position that will allow ready removal for cleaning. © 2008 BASO Gas Products Part No. BASO-AN-PB/THERMOCOUPLES, Rev.- www.baso.com...
- Page 23 Ensure the pilot burner will ignite the main burner under all pilot burner conditions that maintain the safety shutoff device (BASO®) in the On position. (See the Safety Turn Down Test section.) Ensure the pilot burner will not be smothered out or snuffed out: •...
- Page 24 Y99AB Test Disconnect the thermocouple from the BASO safety shutoff device and connect it to the test kit (see Figure 2). Hold the BASO in the open position during this test using battery power from the test kit. Power...
- Page 25 Cycle the main burner On and Off at least three times. The main burner must ignite each time within four seconds. Then wait at least three minutes for the BASO to drop out. (Main burner flame will go out.) If the BASO does not drop out, reduce the pilot flame further and repeat Steps 2 and 3.
- Page 26 If you cannot secure ignition of the main burner when the pilot flame has been reduced to the point at which the BASO drops out, the pilot has been located too far from the main burner and must be moved closer.