TurboChill™
Chillers
41
TurboChill Water Cooled Technical Manual 9216326 V1.10.0 06_2017
Failure to install safety devices will invalidate the chiller warranty.
CAUTION
Ins
ta
lla
tio
n
Pump Statement
When installing circulating water pumps or equipment containing them, the following rules should be applied:
● Ensure the system is filled with liquid then vented and the pump primed with water before running the pump,
this is required because the pumped liquid cools the pump bearings and mechanical seal faces
● To avoid cavitation the NPSH (Net Positive Suction Head) incorporating a safety margin of 0.5Barg must be
available at the pump inlet during operation
Interlocks & Protection
Always electrically interlock the operation of the chiller with the pump controls and flow proving device for safety
reasons.
Maximum System Operating Pressure
The system can safely operate at a maximum of 10bar.
Filling
● During filling the system should be vented at all high points.
● Once the system has been completely vented all vents should be closed.
● To prevent air locking in the system it is advisable to fill the systems from the lowest point, ie drain point on
pipework.
● If auto air vents are used then we strongly recommend an auto pressurisation unit be fitted to the system.
●
Considerations must be made for glycol of the correct concentration to ensure the cooling medium is not diluted.
Although a pressure of 1.5 x working pressure is adequate for testing purposes, most local water
authorities require 2 x working pressure.
CAUTION
The whole system MUST be flushed prior to filling to remove debris left in the water pipework, by
using a flushing bypass as shown to avoid serious damage to the evaporator and condenser.
CAUTION
