Barco ULC-30A, Руководство по обслуживанию

Страница: 59 / 102

10. Refrigeration unit
10. REFRIGERATION UNIT
Description of the refrigeration unit
The refrigeration circuit absorbs the heat provided by the coolant circuit through a heat exchanger and removes the heat by means
of a condenser where it is carried away by the fan air
fl ow.
The refrigeration unit makes use of the refrigeration cycle principle, with a refrigerant as the medium to absorb and remove heat.
The refrigeration unit has hydraulic connections to:
• the primary pump unit
• the Secondary cooling unit (if installed)
Overview
• Refrigeration unit replacement process
• Removing the refrigeration unit
• Installing the refrigeration unit
10.1 Refrigeration unit replacement process
W
ARNING
:
During the entire replacement process, the Service tool wizard will request to connect or discon-
nect the chiller from the power net several times. Follow these instructions to avoid electrical shocks.
C
AUTION
:
It is important to follow the Service Tool wizard step by step. Do not click too rapidly through the
replacement process wizard. This could cause unwanted effects, such as gross spillage of coolant.
How to replace?
1. Make sure the chiller is disconnected from the projector and other chillers.
2. Remove the rear, left and front cover. See procedure "Removing a cover", page 17.
3. Plug the 15 pins serial connector of the PC cable (included in chiller service kit) to any one of the two serial ports at the rear side
of the chiller. Plug the other end of the cable into one of the USB ports of your PC.
Image 10-1
4. Start the Chiller service tool and connect to the Chiller.
Note: Make sure the software has been installed and tested before going on-site. To check for the most recent software version,
go to myBarco log in on Barco’s web site
http://www.barco.com and enter your credentials.
5. Click on the Refrigeration unit replacement and follow the replacement wizard.
6. Remove the Fan unit. See "Removal of the fan unit", page 21.
7. Use the wizard to open the bypass valve.
8. Follow the wizard’s instructions to drain the chiller. See "Draining the coolant circuit", page 26.
R5906015 ULC-30A 01/02/2018 55