2.3 Site Requirements
It is the responsibility of the installer and/or purchaser to provide adequate electrical service, water
supply, floor drains, and footer foundations for the installation. Failure to do so can cause non-
warranted structural damage to the milk cooler and/or costly service problems for the user.
2.4 Hot Water Requirements
A water heating device with adequate storage and temperature recovery capacity must be provided to
wash the milk cooler and milking equipment simultaneously. The water heater should be capable of
supplying water temperatures of 160-170°F (71-76.6°C) during the detergent wash cycle.
CAUTION: To prevent non-warranted expansion damage to the milk cooler, the maximum
wash water temperature shall not exceed 170°F (76.6°C). Installation sites that require water
temperatures in excess of 170°F (76.6°C) should install a tempering valve, Mueller Part No.
8820276, to regulate the milk cooler wash water temperature at 170°F (76.6°C) or below.
2.5 Water Supply Pressure
Water supply pressure to the milk coolers wash system must be maintained between 20 and 60 psig.
2.6 Electrical Requirements
The Sentry II Control System requires a 240/50-60/1 power supply, fused at 15 amps maximum. See
Section 3 for detailed wiring schematics.
NOTE: International markets may request optional transformer, Mueller Part No. 8823060, for power
supplies providing 195/50/1.
Electrical installation requirements for the refrigeration units should be obtained from the Installation
and Operation Manual specific to the refrigeration unit(s) being installed.
NOTE: All wiring to be performed in accordance with the National Electrical Code and/or regulatory
agency for the installation locality. All wiring that enters the Sentry II control box must be sealed with
cord grips or liquid-tight conduit connectors.
Sentry II with Auto-Dosing Assembly Operating Instructions 4 Effective April 1, 2000
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