Instruction/ maintenance manual of the product REFRIGERATION/FREEZER Mermaid
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KOOL-TEMP ™ MARINE REFRIGERATION/FREEZER UNITS INSTALLATION INSTRUCTIONS AND OWNER’S MANUAL PRODUCED BY: MERMAID MANUFACTURING OF S.W., FL, INC. 2651 PARK WINDSOR DRIVE SUITE 203 FORT MYERS, FL 33901 800-330-3553 239-418-0535 – P 239-418-0538 – F INFO@MMAIR.
TABLE OF CONTENTS SECTION 1 (OVERVIEW) A. Introduction to Mermaid SECTION 2 (INSTALLATION) A. Mounting Position B. Installation SECTION 3 (CONTROL MODULE) A. Electronic Control Module B. 12/24VDC, 12/24VDC & 110V w/ Auto-Changeover SECTION 4 (SAFEGUARDS) A.
SECTION 8 (ELECTRICAL) A. Power Supply B. Wire Size C. Overload Protection D. Connections, Power E. Connections, Thermostat F. Connections, Fan SECTION 9 (TROUBLESHOOTING GUIDE) A. Note B. Compressor Not Running, No Start Attempt C. Compressor Attempts To Start, Or Starts And Stops Shortly After D.
Mermaid’s 12/24VDC model or our 12/24VDC & 110V with Auto Change-Over m odel, we are sure you will be pleased with their performance. Mermaid provides a one-year warranty on the refrigeration/freezer products and a five- year warranty on their marine air conditioning li n e.
SECTION 3 (CONTROL MODULE) A: Electronic Control Module: The Electronic Control Module is an integral part of the Danfoss BD35/50F compressor system. It transforms direct current power f rom the vessels batteries into alternating current to run the compressor.
C: Compressor Non-Start: If the compressor does not start, the Module will stop the star ting process, & attem pt a re- start every 60 seconds. D: Compressor Speed Too Low: If the compressor speed falls below 1900 RPM the Module will stop the compressor.
NOTE TWO The Electronic Module, although designed for harsh & marine applications, can be damaged from either direct or incidental c ontact with water, & by water f lowing down wires attached to the terminals.
C: Thermostat Sensing Tube: Check to see where you need to a ttach the thermostat sensing tube before mounting the evaporator. The capillary tube (silver capill ary tube) coming off the thermostat is the sensing device. Upon delivery, the sensing t ube will be coiled up near the body of the thermostat.
contact with any electr ical component either inside or outside the ice-box. If the sensing tube needs to be bent within the confines of th e refrigerator or freezer box, it must be done with great care, heeding the warnings above. C: Operation: The thermostat knob is m arked from 1 to 7.
together, they allow the refrigerant to flow through the system without leaking out to the atmosphere. If needed, they can be undone to enable a faulty component to be rem oved & replaced without leaking refrigerant. Never run the compressor unless all component s of the system are connected together.
B: Wire Size: Consult ABYC tables for 3% volt drop. Never use less than 10 gauge wire. C: Overload Protection: Use either a breaker or fast-b low fuse with 15 amp rating for a 12/24v supply, and/or a 8 amp fuse for the 110v a/c side. (These items are provided on new installations from the Mermaid factory).
(3) Run all applicable tests before assuming Module or Compressor to be faulty. B: Compressor Not Running , No Start Attempt. Probable cause Action 1 Supply voltage too low Check vo ltage with a di gital multi-m eter at the terminals on the Module. This must be 11.
connected retaining screw & then ensure tha t the 3- pin plug is seated firmly on the pins of the compressor. 9 Faulty compressor Remove the Module as above, & unplug from the compressor. Check that ohm readings are the same across all terminals of the com pressor.
3 Thermostat type If you are planning to convert your ice box into a freezer, or as a spillover system, a freezer thermostat (0021) must be used. 4 Evaporator type & size If the ev aporator has an even coating of frost, the thermostat is se t on 7, & the system is cycling, the evaporator may be too small.
E: System Runs, Box Temperature Too Low: 1 Thermostat setting Rotate thermostat knob to a lower number. 2 Thermostat type Check that you are using a refrigerator thermostat (0028) for a refrigerator application.
F: Excessive Frost Build-Up: Note: This is the result of moist air be ing allowed to enter the box. Problems are compounded when cold air leaks from the lower area of the box & is replaced by warm, humid air entering elsewhere. 1 Drains & holes not plugged Make sure all drains & holes in the floor & walls of the box are sealed.
DANFOSS COMPRESSORS 12/24V AND 12/24V W/ 110V.
WIRING OF DANFOSS ELECTRONIC MODULE 12/24V 12/24V + 110V FOLLOW THE WIRING DIAGRA M ABOVE AND DESCRIPTION B ELOW TO MATCH WIRES. THE 12/24 + 110V MODELS WILL HAVE AN AD DITIONAL POSITIVE (L) AND NEUTRAL (N) SYMBOL FOR THE TWO 110V LEADS.
An important point after buying a device Mermaid REFRIGERATION/FREEZER (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Mermaid REFRIGERATION/FREEZER yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Mermaid REFRIGERATION/FREEZER - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Mermaid REFRIGERATION/FREEZER you will learn all the available features of the product, as well as information on its operation. The information that you get Mermaid REFRIGERATION/FREEZER will certainly help you make a decision on the purchase.
If you already are a holder of Mermaid REFRIGERATION/FREEZER, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Mermaid REFRIGERATION/FREEZER.
However, one of the most important roles played by the user manual is to help in solving problems with Mermaid REFRIGERATION/FREEZER. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Mermaid REFRIGERATION/FREEZER along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
