Marvel MicroSentry 30WCM Service Manual
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Marvel MicroSentry 30WCM Service Manual

Beverage centers
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MARVEL MICROSENTRY™ REFRIGERATION MONITOR
Service Manual
MicroSentry™ Refrigeration Monitor
For Models:
30WCM & 61WCM Wine Cellars
3BARM & 6BARM Beverage Centers

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Summary of Contents for Marvel MicroSentry 30WCM

  • Page 1 MARVEL MICROSENTRY™ REFRIGERATION MONITOR Service Manual MicroSentry™ Refrigeration Monitor For Models: 30WCM & 61WCM Wine Cellars 3BARM & 6BARM Beverage Centers...

  • Page 2: Table Of Contents

    MICROSENTRY™ REFRIGERATION MONITOR Table of Contents Section Page Section 1: Introduction 1.1 Unit Specifications 1.2 Serial Nameplate 1.3 Before Servicing 1.4 Basic Refrigeration Tools 1.5 Installation 1.6 Electrical Requirements Section 2: Sealed System 2.1 Introduction 2.2 Low Side Leaks 2.3 High Side Leaks 2.4 Restricted Capillary Tube 2.5 Access Valves 2.6 Evaporator Frost Pattern...

  • Page 3: Section 1: Introduction

    Figure 1.1 1.3 Before Servicing • Always disconnect power to any Marvel product before attempting to service it. Always verify that power has been disconnected. • If the unit has been running, use caution around the condenser and copper tubing. These areas may be very hot.

  • Page 4: Basic Refrigeration Tools

    MICROSENTRY™ REFRIGERATION MONITOR 1.4 Basic Refrigeration Tools The following list contains some of the tools required for basic refrigeration repairs: Hoses with R-134a couplers (must meet standards for handling R-134a refrigerant) Approved and certified recovery system for R-134a Manifold gage set for R-134a Charging cylinder with R-134a Weight scale (preferably in ounces to the nearest tenth of an ounce) Access valves...

  • Page 5: Section 2: Sealed System

    Use a leak detection system that will detect R-134a refrigerant. Leaks need to be found on any leaking system BEFORE the repair takes place. The drier must be replaced anytime the sealed system is opened. Always use a MARVEL drier. Failure to do so may cause repeated system failure in the future.

  • Page 6: Evaporator Frost Pattern

    MICROSENTRY™ REFRIGERATION MONITOR 2.6 Evaporator Frost Pattern Checking the evaporator frost pattern is a good way to quickly diagnose simple sealed system problems. This can be done by allowing the unit to run (at least 10 minutes) with the door open for at least 5 minutes. This will help speed up the normal frosting of the evaporator plate.

  • Page 7: Re-Charging

    MICROSENTRY™ REFRIGERATION MONITOR If low side pressure is below pressure in Table B, check for the following: A system leak Capillary tube is restricted Insufficient compressor (does not pump properly) If low side pressure is above pressure in Table B, check for the following: Restricted air flow Dirty condenser coil Overcharged system...

  • Page 8: Section 3: Sealed System Components

    MICROSENTRY™ REFRIGERATION MONITOR Section 3: Sealed System Components 3.1 Gaining Access to Mechanical Baseplate The mechanical baseplate is located in the rear of the unit. Most major mechanical and electrical components on the unit mount directly to the baseplate. This creates easy access for servicing of the sealed system and mechani- cal/electrical components.

  • Page 9: Compressor

    MICROSENTRY™ REFRIGERATION MONITOR 3.2 Compressor The compressor is the heart of the refrigeration system (see Figure 3.4). However, it relies on other parts of the system to function. Make certain that the other parts of the system are functioning correctly before determining that the compressor is faulty.
  • Page 10 MICROSENTRY™ REFRIGERATION MONITOR Installing the Compressor: Install the four rubber grommets in the bottom of the new compressor and install the three sleeves where the carriage bolts will be located. Mount the new compressor and install the three washers and lock nuts and tighten to 45 in-lbs.

  • Page 11: Condenser

    MICROSENTRY™ REFRIGERATION MONITOR 3.3 Condenser The condenser is a steel tube serpentine with copper alloy fins that removes heat from hot, high pressure vapor from the compressor (see Figure 3.8). The most common trouble is lack of airflow from either a restricted intake or exhaust opening in the front of the unit.

  • Page 12: Evaporator

    MICROSENTRY™ REFRIGERATION MONITOR 3.4 Evaporator The evaporator uses evaporating refrigerant to remove heat from the inside of the unit ultimately making the inte- rior cold. The shape and size of the evaporator may vary among the models covered by this service manual but the fundamentals are the same (see Figures 3.9, and 3.10).

  • Page 13: Section 4: System Components

    MICROSENTRY™ REFRIGERATION MONITOR Section 4: System Components 4.1 Condenser Fan The condenser fan is used to force air over the condenser coil. The fan will cycle on and off with the compressor which means that when the compressor is running so is the fan and when the compressor is not running neither is the fan (see Figure 4.1).

  • Page 14: Sensors

    MICROSENTRY™ REFRIGERATION MONITOR 4.2 Sensors The wine cellars and beverage centers utilize one (1) sensor, known as the control sensor. The control sensor (part number 41050117) senses the interior temperature allowing the control to adjust and properly display the interior temperature.
  • Page 15 MICROSENTRY™ REFRIGERATION MONITOR Removing the Sensor: Disconnect power to the unit. Loosen the screws to the display housing and pull it forward. It will hang down in front of the unit. Open the wire conduit. Loosen the “p” clamp that holds the sensor to the wall. Unhook the sensor at the electronic controller.

  • Page 16: Introduction

    Section 5: MicroSentry™ Refrigeration Monitor and User Panel 5.1 Introduction Marvel’s MicroSentry™ refrigeration monitor oversees the refrigeration system’s performance to help maintain a selected temperature. An audible alarm is sounded if the temperature goes 10 degrees F above or below the set point for more than one hour or if the door is left ajar for more than five minutes.

  • Page 17: Warning Alarms

    Low Temp for more than one hour. The error code and alarm will remain active until the condition is corrected. The monitor detected a sensor fault. Call Marvel Customer Ser- Sensor Fault vice or your dealer if this code is displayed.

  • Page 18: Section 6: Interior Components

    MICROSENTRY™ REFRIGERATION MONITOR Section 6: Interior Components 6.1 Lights The wine cellars and beverage centers are equipped with one (1) light, which is located behind the display housing on the inside top of the cabinet. Replacing the Light Bulb: Disconnect power to the unit. Unscrew the old light bulb located behind the display housing at the top of the unit.

  • Page 19: Section 7: Wiring

    MICROSENTRY™ REFRIGERATION MONITOR Section 7: Wiring Figure 7.1: Wiring Diagram for 30WCM, 61WCM, 3BARM & 6BARM...

  • Page 20: Section 8: Ordering Parts

    Model and serial number located on the serial nameplate (see Section 1.2, Serial Nameplate) Color of the model Metal or plastic grille Type of door To order parts, call or write: Northland-Marvel P .O. Box 400 1260 E. Van Deinse St. Greenville MI 48838 Phone: 800.223.3900...
  • Page 21 MICROSENTRY™ REFRIGERATION MONITOR Section 9: Service Parts Model Page 30WCM • Door • Cabinet • Mechanical 3BARM • Door • Cabinet • Mechanical 61WCM • Door • Cabinet • Mechanical 6BARM • Door • Cabinet • Mechanical...
  • Page 22 MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram One: 30WCM Door...
  • Page 23 MICROSENTRY™ REFRIGERATION MONITOR Service Parts List One: 30WCM Door Illus. No. Description Qty. Req. Part No. Service Assembly Door Handle, SS 41005803 42242939 Door Handle, Black 41007392 42245084 # 10-32 x 1.00 Pan HD Phil Screw, SS 08204920 # 10-32 x 1/4 Cone Point Set Screw 41006026 Door Handle Standoff, SS 41005804...
  • Page 24 MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram Two: 30WCM Cabinet...
  • Page 25 MICROSENTRY™ REFRIGERATION MONITOR Service Parts List Two: 30WCM Cabinet Illus. No. Description Qty. Req. Part No. Service Assembly Strain Relief 32175-000 # 10 x .5 Type AB Hex Washer HD Screw 08204928 Back Panel 41006763 Sensor 41050117 Screw 08204928 Fastex Clamp #8511-33-00, White 41003685 Hinge, Chrome, Right, Top 41007433...
  • Page 26 MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram Three: 30WCM Mechanical...

  • Page 27: Section 9: Service Parts

    MICROSENTRY™ REFRIGERATION MONITOR Service Parts List Three: 30WCM Mechanical Illus. No. Description Qty. Req. Part No. Service Assembly Fan Shroud 41005500 42242902 Condenser, R-134a 41003609 42242082 Copper Tube, .312 OD x 4.50 LG 41003637 Dryer, 1/4 x 5/16 x 3/32 41001460 42243394 Discharge Tube, .187 OD x 19 LG...

  • Page 28: Section 10: Troubleshooting Guide

    MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram One: 3BARM Door...
  • Page 29 MICROSENTRY™ REFRIGERATION MONITOR Service Parts List One: 3BARM Door Illus. No. Description Qty. Req. Part No. Service Assembly Door Handle, SS 41005803 42242939 Door Handle, Black 41007392 42245084 # 10-32 x 1.00 Pan HD Phil Screw, SS 08204920 # 10-32 x 1/4 Cone Point Set Screw 41006026 Door Handle Standoff, SS 41005804...
  • Page 30 MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram Two: 3BARM Cabinet...
  • Page 31 MICROSENTRY™ REFRIGERATION MONITOR Service Parts List Two: 3BARM Cabinet Illus. No. Description Qty. Req. Part No. Service Assembly Strain Relief 32175-000 # 10 x .5 Type AB Hex Washer HD Screw 08204928 Back Panel 41006763 Sensor 41050117 Screw 08204928 Fastex Clamp #8511-33-00, White 41003685 Hinge, Chrome, Right, Top 41007433...
  • Page 32 MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram Three: 3BARM Mechanical...
  • Page 33 MICROSENTRY™ REFRIGERATION MONITOR Service Parts List Three: 3BARM Mechanical Illus. No. Description Qty. Req. Part No. Service Assembly Fan Shroud 41005500 42242902 Condenser, R-134a 41003609 42242082 Copper Tube, .312 OD x 4.50 LG 41003637 Dryer, 1/4 x 5/16 x 3/32 41001460 42243394 Discharge Tube, .187 OD x 19 LG...
  • Page 34 MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram One: 61WCM Door...
  • Page 35 MICROSENTRY™ REFRIGERATION MONITOR Service Parts List One: 61WCM Door Illus. No. Description Qty. Req. Part No. Service Assembly Screw 08204920 Door Standoff, Black 41007390 42245084 Door Standoff, SS 41005804 42242939 Set Screw 41006026 Door Switch Retainer, Black 44000562 42246541 Screw, Black 41007520 Hinge Pin, Top 41004106...
  • Page 36 MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram Two: 61WCM Cabinet 28 29 30...
  • Page 37 MICROSENTRY™ REFRIGERATION MONITOR Service Parts List Two: 61WCM Cabinet Illus. No. Description Qty. Req. Part No. Service Assembly Back Shroud 41003617 # 10 x .5 AB Hex Washer HD Screw, Zinc 08204928 Back Panel 41000396 42241648 Sensor 41050117 # 10 x .5 AB Hex Washer HD Screw, Zinc 08204928 Fastex Clamp #8511-33-00, White 41003685...
  • Page 38 MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram Three: 61WCM Mechanical...
  • Page 39 MICROSENTRY™ REFRIGERATION MONITOR Service Parts List Three: 61WCM Mechanical Illus. No. Description Qty. Req. Part No. Service Assembly Baseplate, R-134a Mechanical 41005085 42242579 Screw 41005089 Washer 08205115 # 1/4-20 Carriage Bolts 08205050 42242388 Fan Motor Bracket 1010002B Screw 41003221 Tubing Evacuation 41001466 Dryer, 1/4 x 5/16 x 3/32 41001460...
  • Page 40 MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram One: 6BARM Door...
  • Page 41 MICROSENTRY™ REFRIGERATION MONITOR Service Parts List One: 6BARM Door Illus. No. Description Qty. Req. Part No. Service Assembly Screw 08204920 Door Standoff, Black 41007390 42245084 Door Standoff, SS 41005804 42242939 Set Screw 41006026 Door Switch Retainer, Black 44000562 42246541 Screw, Black 41007520 Hinge Pin, Top 41004106...
  • Page 42 MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram Two: 6BARM Cabinet 31 32...
  • Page 43 MICROSENTRY™ REFRIGERATION MONITOR Service Parts List Two: 6BARM Cabinet Illus. No. Description Qty. Req. Part No. Service Assembly Back Shroud 41003617 Screws 08204928 Back Panel 41000396 42241648 Sensor 41050117 Screw 08204928 Fastex Clamp #8511-33-00, White 41003685 Hinge, Chrome, Right, Top 41007433 Hinge Screw, Zinc 41007598...
  • Page 44 MICROSENTRY™ REFRIGERATION MONITOR Service Parts Diagram Three: 6BARM Mechanical...
  • Page 45 MICROSENTRY™ REFRIGERATION MONITOR Service Parts List Three: 6BARM Mechanical Illus. No. Description Qty. Req. Part No. Service Assembly Baseplate, R-134a Mechanical 41005085 42242579 Screw 41005089 Washer 08205115 # 1/4-20 Carriage Bolts 08205050 42242388 Fan Motor Bracket 1010002B Screw 41003221 Tubing Evacuation 41001466 Dryer, 1/4 x 5/16 x 3/32 41001460...
  • Page 46 1. Display light feature is en- Press “LIGHT” switch to disengage inside of the unit. gaged. light. Call your dealer or Marvel Customer “E1” error code on display panel 1. Sensor Fault. Service. “Do” error code on display panel 1. The door is open.
  • Page 47 MICROSENTRY™ REFRIGERATION MONITOR NOTES...
  • Page 48 Northland-Marvel P .O. Box 400 1260 E. Van Deinse St. Greenville MI 48838 800.223.3900 41011043 Rev D All specifications and product designs subject to change without notice. Such revisions do not entitle 06/30/09 the buyer to corresponding changes, improvements, additions, replacements or compensation for...

This manual is also suitable for:

Microsentry 61wcmMicrosentry 3barmMicrosentry 6barm

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