Sterlco S Series Central Chilling Stations - Manual (Page 31)

SCW Series Central Chilling Stations Page 31 of 77
4-8 High Pressure Cutout
This electro-mechanical safety feature opens the control circuit if
the system condensing pressure exceeds a safe level.
High pressure cutout setting
Model psi kPa bars
SCW Series water-cooled and remote air-cooled
chilling stations
290 psi 2,000 kPa 20 bars
Important!
The high pressure cutout is a manual reset control,
so you should reset it once.
If the problem persists, call a refrigeration service technician
to analyze the problem and to reset the control.
4-9 Low Pressure Cutout
This encapsulated switch safety feature prevents the compressor
suction pressure from dropping below a pre-set point. It is factory
set to open the control circuit when pressure drops below a safe
level. The chiller will restart when the suction pressure reaches 30
psi (206.9 kPa/2.1 bars).
Opens control circuit @ Resets control circuit @
Model
psi kPa bars psi kPa bars
SCW Series water-cooled and
remote air-cooled chilling stations
15 psi 103.4 kPa 1.0 bars 30 psi 206.9 kPa 2.1 bars
4-10 Flow Switch
The flow switch shuts down the chiller if the evaporator water flow
falls below a safe operating gallons-per-minute (liters-per-minute)
flow rate.