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Controls – Schreiber Chillers 15MEDAC email User Manual

Page 11

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overhead pipes and overflowing the reservoir. A water supply and hose should be

plumbed to the chiller for filling.

Each pump has a shut off valve between the tank and pump suction, and a pressure

relief bypass valve, set at 45psig, installed on the discharge and return to manage the

flow. There is a common discharge pressure gauge for pumps. A strainer and cleanout

valve is installed for refrigeration system.

CONTROLS

The chiller enclosure is a single enclosure with two compartments. The upper section

houses the controller and pilot lamps. The lower section contains the main disconnect

(non-fused) and all of the high voltage components. The upper section can be opened

for an operator to check the control panel. The lower door is interlocked to disconnect.

The main controller has a built in 4 x20 LCD display. The remote terminal can be wall

mounted indoor. It is connected to the controller via a 6-conductor data cable. The

cable has phone jack style connections and150’ of the cable is provided. The remote

terminal receives its power from the main controller; therefore, no additional power

supply is required

The controller has one digital input available for remote on/off. There are option BAS

gateways for TCP/IP, MODBUS, BAC-Net, and LON-works.