Instruction manual

KT series chillers – Installation and Operation manual
Issue 7.0 Page 12
5.0 Technician section
Warning: Opening the refrigeration system may expose the operative to toxic and
corrosive compounds (HF). Take protective measures including suitable eye protection.
Warning: Gases may exceed 300 psi (20 bar) during operation.
Warning: All refrigerants do not support combustion and are asphyxiating gases.
Warning: After switching off, the condenser cooling fan blades continue to rotate. Do not
attempt servicing whilst the blades are rotating.
Warning: All chillers contain water and electricity in close proximity. Always ensure the
unit is isolated before service. All K series chillers are protected from over current by the
master circuit breaker. Never bypass this component.
5.1 Fluid flow and pressure adjustment
It is possible to change the operating pressure of all K series chillers, except KT chillers
fitted with a 6 litre/minute pump
2
, as follows:
1. Remove the cover from the chiller, giving access to the top compartment.
2. With the chiller running, release the locking nut on the pressure relief valve.
3. Turn the valve knob anticlockwise to reduce the flow/pressure, clockwise to
increase the flow/pressure.
2
The 6 litre/minute pump is specially designed for low pressure applications, and the flow rate and pressure
settings cannot be changed on these units.
Technician
section