9.4 Draining liquid cooler
2.
Open the venting valve.
3.
Fill the system circuit from bottom to top to ensure coil circuit deaeration.
Note:
The unit venting is not designed to cover the whole system deaeration. We recommend
using system circuiting dearation to remove all absorbed air, including micro-bubbles.
9.4 Draining liquid cooler
WARNING:
Follow the recommendation of the working fluid supplier (Material Safety Data Sheet)
strictly.
Prevent the accidental release of fluid and adopt the visual and acoustic alarms to
minimize the consequences of insufficient amount of fluid. Plan the installation field
for recovering or disposing of the fluid.
You can drain the circuit of the unit through the drainage valve. Open also the venting valve. Before starting
the drainage, close the inlet and outlet valves of the unit.
Prevent fluid escaping from the unit to the environment.
Note:
The unit does not drain fully with gravity. Use pressurized air to complete emptying.
9.5 Changing liquid to another liquid
Operating the unit with unsuitable working fluid may cause considerable danger.
Note:
With water and improperly chosen liquid solution, there is a risk for unit freezing at ambient
temperatures near 0 °C or below. Freezing water may break the water tubing in the coil.
9.6 Coil cleaning
WARNING:
Each fan is equipped with a fan guard and a lockable service switch. The wire
spacing in the fan guard and the safety distance of the blade correspond to the
European safety standard. The safety guards are protections from contact only.
Do not remove the safety guard before the fan is shut down. The rotating impeller
may catch in your clothes, cut you or pull you in.
©
Alfa LU-VE, Rev-04
74
Alfa LU-VE is a trademark registered and owned by LU-VE Group.
Alfa LU-VE reserves the right to change specifications without prior notification.
