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With Temperature Controller

Walk In Monitoring II

An all-in-one electronic control that can combines temperature monitoring and alarming, door ajar alarm, entrapment alarm and leak detection into a single system.

Features

 

The WIM2 Walk-in Cooler Monitoring System - Two Zone is designed to incorporate most of the control functions necessary to monitor safety conditions of a walk-in cooler and freezer of a supermarket, convenience store or restaurant into a compact, simple to install package.

 

The WIM2 is compliant with ASHRAE 15-2001 and the MECHANICAL CODE requirements for refrigerant gas monitoring.

 

The Control utilizes the latest microprocessor technology with two row 16 character LCD back-lighted display. The English menu driven user interface is easy to understand and manipulate.

 

A single WIM2 performs the following independent monitoring and alarming functions for two separate walk-in coolers:

 

      •  Door Ajar Alarming

 

      •  Entrapment Alarming

 

      •  Temperature Monitoring and Alarming

 

      •  Refrigerant Gas Leak Monitoring

 

Temperature Alarming

 

The WIM2 can monitor the temperature in a two zones (rooms). The WIM2 will activate its audible visual alarm and the System Alarm Relays based upon the following alarm conditions:

 

      High Alarm : The room temperature must exceed the High Alarm Limit for a time period equal to or longer than the High Temp Alarm delay.

 

      Low Alarm : The room temperature must be below the Low Alarm Limit for a time period equal to or longer than the Low Temp Alarm delay.

 

Either alarm can be enabled/disabled in the CONFIGURATION MENU.

 

Door Ajar Alarming

 

The WIM2 will activate its audible visual alarm and the System Alarm Relays if the monitored door is opened (Door Switch is closed) for more than the Door Open Alarm Delay time. When the door is opened, the display shows the duration of the door opening in hours and minutes. To monitor more than one door, connect all door switches in parallel. This alarm can be enabled/ disabled in the CONFIGURATION MENU.

 

Entrapment Alarming

 

The WIM2 will activate its audible visual alarm and the System Alarm Relays if a normally closed Entrapment Push Button is momentarily pushed to open. To monitor more than one Entrapment Push Buttons, connect all the buttons in series. This alarm is always active. To disable this alarm, short the two input connectors together with a bare copper wire.

 

Refrigeration Leak Monitoring

 

The WIM2 makes any refrigerated room Uniform Mechanical Code Compliant with the addition of a Sherlock Refrigerant Sensor. The WIM2 will activate alarms based upon two alarm levels. At the first alarm level, the WIM2 will activate its audible visual alarm and the Refrigerant Leak Level One Alarm Relays, activating any alarm notification system connected to the WIM2. At the second alarm level, the WIM2 will activate its audible visual alarm and the Refrigerant Leak Level Two Alarm relays, activating additional alarm indication equipment and any additional safety procedures as required by local codes.

 

Gas Leak Sensors

 

The Sherlock Refrigerant Gas Sensor acts as an analog signal generator when connected to the Control via a discrete, three conductor cable. The sensor can be mounted up to 800 feet away in locations where leaked refrigerant is likely to concentrate.

 

The gas sensors are available in three varieties:

 

      •  Ceramic Metal Oxide Semiconductor (CMOS) or Solid State Sensor

 

      •  Non-Dispersive, Pyro-Electric Infrared Sensor.

 

      •  Electrochemical

 

Models

 

Door/Temp Monitoring Model - Two Zone   WIM2 / WIM2-4

 

Door/Temp/Refrigerant Leak Detection Model  - Two Zone   WIM2-L / WIM2-L-4

 

Door/Temp Monitoring Model with Remote Communications - Two Zone   WIM2-C / WIM2-C-4

 

Door/Temp/Refrigerant Leak Detection Model with Remote Communications  - Two Zone   WIM2-L-C / WIM2-L-C-4

Clark Johnson Company, Inc.       2016