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TROUBLESHOOTING & REPAIR |
CAPACITOR BANK REMOVAL AND REPLACEMENT (continued)
FIGURE F.16 — LOCATION OF CAPACITOR BANK REMOVAL AND REPLACEMENT COMPONENTS.
LEAD |
|
SCR DIODE #206 | CAPACITOR |
LEAD | BANK |
| LEAD |
| #206B |
SHUNT
LEADS
X1 AND X2
POWER
ENHANCEMENT
CHOKE LEAD
OUTPUT
CHOKE LEAD
PROCEDURE | tive capacitor bank buss bar using a |
| 1/2 in. open end wrench. |
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See Figure F.16 for location of capacitor bank removal and replacement components.
1.Disconnect main input power to the machine.
2.Remove the case side panels using a 3/8 in. nutdriver.
3.Test that the capacitors are discharged using a volt ohmmeter. Polarity must be observed.
4.Remove the two transformer secondary leads X2 and X3 (braided copper strap) from the negative capacitor bank buss bar using two 1/2 in. open end wrench- es.
5.Remove the shunt, leads 206, 206B, and the SCR diode lead from the nega-
6.Remove the choke lead and lead 204B from the positive capacitor bank buss bar using two 1/2 in. open end wrench- es.
7.Remove the power factor enhancement choke lead from the positive capacitor buss bar using two 1/2 in. open end wrenches.
8.Remove the three nuts holding the capacitor bank to the floor of the machine using a 3/8 in. nut driver.
9.Clear the leads and carefully remove the capacitor bank assembly from the machine.
10.Reassemble the capacitor bank in the reverse order.