Installation
Polycold Cryochiller
Connect Electrical Power
Installation and Operation Manual
Brooks Automation
4-16
214072 Revision B
Input Power Transformers
The Polycold Cryochiller has one of three different transformers installed based on the input power
requested when the unit was ordered. The system is set to a specific input voltage at the factory by
transformer tap settings. These tap settings must be adjusted in the field as required to accommodate
the actual voltage at the installation site.
•
Available tap settings are: 200V, 230V, 380V, 400V, 430V 460V and 480V.
•
All transformers use the same numbering scheme for tap settings but the taps may be in differ-
ent physical locations on the transformer depending on the transformer that is used.
Change Transformer Tap Settings
1.
Check the input voltage.
2.
Check the transformer tap settings. Refer to the tap setting sticker on the transformer or
.
3.
Rewire the transformer tap settings as required. Refer to
for tap settings for
your compressor and voltage.
•
Remove the protective cover
•
Change the input wiring and jumper settings as required
•
Replace the protective cover
4.
Go to the Installation Checklist
. Initial and date this task. Go to next task on the checklist.
Figure 4-12: Tap Settings for 230 and 480 Volt Transformers
