Johnson Controls YORK PYT 0330 Instruction Manual page 36

Flushing process for HYP model drives
System flushing is a process that is intended to drain as much of the coolant or shipping fluid as
possible from the drive and to remove any residual amounts of the remaining fluid in preparation
for operating the drive. It is also intended to be used during annual drive servicing. Collect and
dispose of all fluids drained from the drive in accordance with local policy and regulations.
Note: Some HYP models have had inductor design changes (input and output) that do not
include an upper GHT connection and there may only be one lower or drain GHT connection.
The following special tools are required:
• Wet dry Shop-Vac type of vacuum
• Shop-Vac water drainage kit, Shop-Vac P/N 8018862
The supporting documents are as follows:
• MSD sheets for the inhibitor, included with shipment
• Required: Appropriate drive service manuals for 115 VAC powering of the OptiView panel while
the drive is de-energized.
Table 8: HYP drive coolant and inhibitor quantities
Drive model
HYP0490/HYP490
HYP0612
HYP0730
HYP744
HYP0774
HYP1100
HYP1278
HYP1300
36
Coolant capacity (gal)
5
5
6
6
6
9
9
9
Chillers with YORK Liquid-Cooled Variable Speed Drives and Starters
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Recommended inhibitor
amount (gal)
10
10
12
12
12
18
18
18