Nor-Lake NL708 Door Alarm - Manual (Page 2)

Operating Instructions Alarm/Light Module XWA11V
01/14 Rev F. 142498 Page
1
XWA11V
Walk-In Temp / Door /Alarm / Light Module
1. GENERAL DESCRIPTION
Model XWA11V, 100x64 mm format, is a microprocessor-based controller, suitable for temperature
monitoring and alarming in a walk-in cooler or freezer. It is provided with two (2) Relay Contacts to control
lights and an external alarm. It is provided with one (1) NTC probe input for temperature measurement. The
unit has 2 Digital Inputs, one for a Door Switch and the 2nd as an optional Panic Switch. See the catalog for
optional accessories. One 5Pin Input allows the user to program the parameter list with a “Hot Key” (see
section 9)
Note: The default settings are listed in the back of this manual. They are set for Coolers (Medium
Temp). For Freezers (Low Temp) you MUST Change the ALL and ALU settings. See Section 4.0
2. GENERAL WARNINGS
2.1 PLEASE READ BEFORE USING THIS MANUAL
• This manual is part of the product and should be kept close to the instrument for easy and quick reference.
• The instrument shall not be used for purposes different from those described hereunder. It cannot be used
as a safety device.
• Check the application limits before proceeding.
Note: If equipped with a battery backup, the battery must be installed after the walk-in has reached its
operating temperature.
2.2 SAFETY PRECAUTIONS
• Check if the supply voltage is correct before connecting the instrument.
• Do not expose the back of the instrument to water or moisture: use the controller only within the operating limits
avoiding sudden temperature changes with high atmospheric humidity to prevent the formation of condensation.
• Warning: disconnect all electrical connections before performing any maintenance operation.
• Fit the probe where it is not damaged by the end-user. The instrument must not be opened.
• In case of failure or faulty operation send the instrument back to the distributor (see address) with a detailed
description of the fault.
• Consider the maximum current that can be applied to each relay (see Technical Data).
• Ensure that the wires for probes, loads and the power supply are separated and far enough from each other, without
crossing or intertwining, or you may get bad temperature readings.
• Be sure to seal any J-box with RT sealant to prevent cold and moisture intrusion.