MICROSENTRY™ REFRIGERATION MONITOR
Section 1: Introduction
1.1 Unit Specifications
The unit specifications will vary among the models listed in this service manual. Refer to Table A below for unit
specifications related to the model that you are servicing.
Table A: Wine Cellar & Beverage Center Unit Specifications
Cabinet Dimensions (in)
Weight
(lbs)
Electrical
Require-
ments
Power
Cord
Length
(ft)
Com-
pressor
Refrig-
erant
Charge
(oz)
System
Refrig-
erant
Control
Temperature
Control
Con-
denser
Fan
Motor
Evapo-
rator
Fan
Motor
Height Width Depth
30WCM
34 1/4 14 7/8 21 1/4 100
115VAC/
60 Hz
7
Piston
type
2.8
Capillary
tube
Electronic
Control with LED
display, thermis-
tor input, and
MicroSentry™
System
2.3 W/
1300
RPM
12VDC
3BARM
61WCM
34 23 7/8 22 130 3.6
6BARM
1.2 Serial Nameplate
The serial nameplate is located inside of the unit on the upper left hand wall. The serial number will need to be
given when inquiring about the unit or ordering parts. See Figure 1.1 below for a sample serial tag with manufac-
turing date code logic.
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.
Use caution around the condenser fins and baseplate edges. These areas are sharp.•
Refrigerant is under high pressure. Always evacuate any system before attempting to open it.•
Reasonable care and safe work methods should be practiced when working on any Marvel product. Never •
work with energized electrical equipment in wet or damp areas.
Use an appropriate work area and location when performing repairs. You will find that it is easier to repair •
undercounter units if they are set on a raised platform or workbench.
Always wear protective safety glasses and gloves when working on any Marvel product.•
Any refrigerant, whether CFC, HCFC, or HFC (R-12, R-22, or R-134a), must be recovered. Federal regulations •
prohibit the intentional venting or release of refrigerants during the service repair or disposal of an appliance.
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