Sea Frost 372 ROUTE Spécifications

372 ROUTE 4 BARRINGTON, NH 03825 USA TEL (603) 868-5720 FAX (603) 868-1040 1-800-435-6708 E-Mail:[email protected] www.seafrost.co

10 INSTALLATION Installer's care should be stressed. No matter how good SEA FROST equipment is, its performance and life are in the hands of t

11 NOTES ON SWAGELOK FITTINGS Swagelok fittings come to you completely assembled, finger-tight. (Pieces a, b, and c in Drawing #1 are already toget

12 DRAWING 1 STEP 1 Simply insert the tubing into the SWAGELOK tube fitting. Make sure that the tubing rest firmly on the shoulder of the

13 STEP 3 Now, while holding the fitting body steady with a backup wrench, tighten the nut 1 1/4 turns. Watch the scribe mark, make one complet

14 CONDENSING UNIT LOCATION AND MOUNTING The design of the BG 2000 allows placement of the unit in an enclosed space such as a cabin locker, sail l

15 INSTALLING THE THERMOSTATIC EXPANSION VALVE The larger fitting on the thermostatic expansion valve connects with a Swagelok to one of the plate t

16 RUNNING THE TUBING Make the connection to the compressor and RFD after all other connections are made. A 1/4" copper tube runs between the

17 RFD (Receiver Filter Drier) The RFD contains desiccant to absorb moisture This absorption is limited. Leaving the RFD installed on a partially

18 WIRING THE PUMP The pump is connected by three wires at the compressor unit. The pump operation is controlled by the BG2000. REFRIGERANT HANDLI

19 PROCEDURES FOR WORKING WITH R-404a 1) A new uncharged system must be evacuated before adding R-404a. 2) An R-404a system must only be pressuriz

2 TABLE OF CONTENTS BG 2000 OPERATION 4 ICE MAKING 5 MAINTENANCE 6 HOW REFRIGERATION WORKS 8-9 INSTALLATION 10 SWAGELOK FITTINGS 11-13 CONDENSI

20 GAUGES Gauges must be used in the evacuation and charging. They will provide information on the operation of the system when troubleshooting.

21 Disconnecting the gauge set on a static system may be done by rapidly unscrewing the hoses from the service ports. Adding charge to a working s

22 NEW SYSTEM CHARGING INTRODUCING INITIAL CHARGE After the evacuation leak test and pump down, shut off the manifold valves, disconnect the cent

23 TO CHECK WITH BUBBLES Soap each connection and observe all sides of the connection with a bright light and a mirror. A leak will blow bubbles.

24 3. The sight glass will show a stream of foam indicating a partial charge. 4. Introduce liquid refrigerant (liquid is supplied by keeping the

25 A white stream of fast moving foam with the compressor operating indicates an insufficient charge level. Watch closely for a transition from foam

26 SPECIAL NOTE R-404a will become cloudy and indicate similar foaming in the sight glass as the pressure on the hi-pressure side of the systems bec

27 TROUBLESHOOTING The most common problems that can occur in a SEA FROST BG 2000 System are: (1) Overcharge or loss of water flow switching off

28 b) If pressure reading is over 100 psig with compressor off, proceed to check charge level via sight glass and charge if needed. CHARGE LOS

29 Follow the "re-make" instructions for Swagelok fittings. Reminder: To ensure the total removal of moisture from the system use a high

3 372 ROUTE 4 BARRINGTON, NH 03825 USA TEL (603) 868-5720 FAX (603) 868-1040 1-800-435-6708 E-Mail:[email protected] www.seafrost.

30 BG 2000 Specifications and Operating Characteristics 115-volt 50/60 hz 230-volt 50/60 hz Horsepower 1 HP 1HP Refrigerant 404-a 404-a Oi

31 Figure 1

32 WATER CIRCUIT

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36 372 ROUTE 4 BARRINGTON, NH 03825 USA TEL (603) 868-5720 FAX (603) 868-1040 1-800-435-6708 E-Mail:[email protected] www.seafrost

37 HOLDOVER PLATES STAINLESS STEEL EVAPORATOR PLATES

4 BG 2000 OPERATION The SEA FROST BG 2000 system is an electrically driven refrigeration plant. Operation of the compressor will freeze the conte

5 ICE MAKING Your SEAFROST holdover plate may be equipped with vertical ice trays. The ice trays are held in contact with the plate by a stainless

6 BG 2000 MAINTENANCE Like your engine, your SEA FROST needs periodic checking. ROUTINELY CHECK: 1. The refrigerant charge. See: "Checking

7 It is IMPORTANT that NO WATER flows between the plastic housing and the pump body. The screws that hold the cover also seal the housing. Water beh

8 HOW REFRIGERATION WORKS There are two important concepts to understand in order to learn about refrigeration. They are latent heat and phase cha

9 By causing R-404a to boil (evaporate) in the SEAFROST plates, we absorb the heat energy there. This activity cools the liquid solution within the