__________________________________________________Chapter 4 – Smoke Control Section, Page 4-25
Smoke Control – Troubleshooting (Cont.)
Transformer Voltage Test
Extreme Caution: Before removing the lead wires from the Transformer a Pre-Transformer
Voltage Test must be conducted as described in steps 1 and 2 below.
This test is necessary to
insure that the power to the Transformer has shut off and the Grounding Disc made proper
contact with the brass grounding screws to drain all the residual power from the Transformer.
To test the transformer voltage two tests must be performed the Ionizer Voltage Test and the Collector
Voltage Test. Prior to performing these two tests power must be shut off to the Transformer. To shut off
the power proceed as follows:
1.
Open the Electrical Compartment door first (the smaller door) and then the Cell/Plumbing
Compartment door. Opening the Electrical Compartment door releases the Plunger Safety Switch,
shutting off power to the transformer by releasing the micro switch, and draining residual power
from the transformer(s) the by Grounding Disc making contact with the brass grounding screws
(Refer to Figure 4-17-1 and 4-24-1).
2.
To test proceed as follows:
A.
Ionizer Voltage Test
1)
Disconnect the high voltage wires from the power supply points “COLL” and “ION” (Refer to
Figure 4-26-1 and 4-26-2).
2)
Set selector switch on volt meter to the highest DCV scale.
3)
Tape the Door Safety Switch closed.
4)
Push in and hold the Plunger Safety Switch
5)
Place probe or clip labeled "common" against “ground”.
6)
Place high voltage probe against the “ION” connection point.
7)
Voltage should be 9,000 to 11,000 DC.
If voltage is below 9,000, it indicates that the Transformer is defective and must be replaced.
Refer to the Parts Chapter of this manual.
