Eurotherm Drives 590 DRV Digital, Product Manual, Page: 85 / 318

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6
590 DRV Digital DC Drive Product Manual
Chapter 6 Service and Maintenance
6. Repeat this procedure in the reverse order when replacing SCRs. The tightening torques for installing SCRs
and reassembling the buss bars are:
SCR mounting screws M5 x 18 socket head 3.3 - 4.4 lb-ft (4.5 - 6.0 Nm)
SCR buss bar screws M5 x 10 Phillips head 1.8 - 2.6 lb-ft (2.4 - 3.5 Nm)
3-phase buss bar screws M6 x 10 slotted head 1.8 - 2.6 lb-ft (2.4 - 3.5 Nm)
Caution
All connections must be made using the correct tightening torque. Overtightening could strip the
threads in the heatsink or the SCR making them unusable.
Figure 6.13 - SCR Bussing Removed for SCR F
Figure 6.12 - Power Supply Board Removed
C
D
E
F
H
G
I
I
SCR F
B
A