Sea Frost 372 ROUTE Spécifications

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

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

11 By causing R-12 to boil (evaporate) in the SEA FROST plate, we use the heat energy in the plate. This activity cools the liquid solution in the p

12 TUBE CUTTING Use only a tube cutter, hacksawing or any other method will introduce chips to the system and distort the tube, making connections d

13 In mounting the compressor, consider the following:  When mounted, the compressor must not lay over on its axle axis more than 45 degrees from v

14 PULLEY MOUNTING ON ENGINES IT IS IMPERATIVE THAT THE EXTRA PULLEY BE MOUNTED TO THE ENGINE CRANK PULLEY USING LOCK WASHERS OR THREAD LOCK ADHESI

15  The zinc anode must be accessible as periodic checking is required. For best service access to the zinc, mount the condenser with the zinc away

16 A drilling template should be made. Drill 1 1/4" holes for the refrigerant tubes completely through the icebox wall if the V/C/U is externall

17 VALVE CONTROL UNIT For appearance and convenience of installation, the valve control unit mounts outside the icebox. However, in certain applica

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

19 DRAWING 1 STEP 1 Simply insert the tubing into the SWAGELOK tube fitting

2 START UP PROCEDURE for RECENTLY COMMISSIONED SEA FROST ENGINE DRIVE SYSTEMS ATTENTION new SEA FROST owner or operator! PLEASE DO NOT OPERATE TH

20 SWAGELOK FITTINGS ARE TO BE TIGHTENED TO A TORQUE SPEC, NOT INFINITE TIGHTNESS. BE SURE YOUR STARTING POINT IS WRENCH SNUG. A DISTORTED TUBE MIG

21 RUNNING THE LINES PLANNING The hose assemblies connecting the compressor to the copper tubing allow for movement of the compressor after install

22 Helpful tools • Coil spring-type tube benders are available for 3/8"-1/2" O.D. tube. These springs are slid over the tube. Bend is f

23 INSULATING THE LINES Insulating should be the last step after leak checking because it will cover fittings that must be leak-checked. On long un

24 ELECTRICAL SYSTEM The electrical system for the SEA FROST system includes a control panel comprised of a timer switch, pilot light, circuit break

25 WIRING The electrical system is shown in the diagram. The red wire is connected to a source of 12 volts (DC) and should be protected by a fu

26 DISPLACING OIL IN NEWLY INSTALLED COMPRESSOR The compressor is shipped with the proper amount of oil for the system. The oil must be displaced f

27 REFRIGERANT HANDLING SEA FROST is charged with REFRIGERANT-12. R-12 is the common name and number given to the chemical composition DICHLORODIFL

28 VENTING THE CHARGE HOSE To avoid pulling air or other contaminants into the system, it is necessary to vent the air out of the hoses that are use

29 Charging with the gauges should be done through the blue side. The center hose is connected to the can tap. Be sure to vent the hoses to displac

3 5) If white foam is evident watch closely for a transition from foam to clear. A clear sight glass indicates a sufficiently charged system. This

30 There are two ways to leak-check a pressurized system: 1. Soap bubbles (a solution of dish soap and water works well). 2. Electronic lea

31 EVACUATION WITH A VACUUM PUMP Evacuation removes air, readying the system for charging. Evacuate the system only after pressurizing and leak che

32 6. On a new system, turn off the compressor for several minutes after charging, and then restart it. Run the engine at slow speed, less th

33 In a warm system, when the plate is above freezing (32.F) upon start-up, the sight glass may take several minutes to clear. A cold system, in co

34 SPECIAL NOTE If charging SEA FROST gear with BULK CYLINDERS, it is hard to determine how much refrigerant has been installed. The feed pressure

35 DISCHARGING THE SYSTEM Before the connections can be disconnected, the refrigerant charge must be discharged. Connect a gauge set to the suction

36 If system is warm upon start-up, a DIRT-PLUGGED Valve will show an immediate deep vacuum reading on low side. Contact Sea Frost for cleaning tech

37 MAINTENANCE FOR UNITS IN TROPICAL WATERS ZINCS This is the most important procedure. A full flow sea frost condenser without a zinc or without

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4 CONTENTS OPERATION 5 GENERAL DESCRIPTION 5 ICE MAKING 7 MAINTENANCE 8 ZINC, CONDENSER: SKETCH 9 INSTALLATION 11 TUBE HANDLING, CUTTING

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5 OPERATION ~ GENERAL DESCRIPTION The SEA FROST Engine Drive is a cold storage refrigeration system powered by the boat's engine. Cold storag

6 A SUGGESTION As soon as the engine has stopped or the timer has run out, the plate will begin to warm up as it absorbs heat (cools) the icebox.

7 ICE MAKING WITH THE BLOCK SYSTEM The best way to make Ice is by freezing the metal ice trays to the top of the block. Spill some water on top of

8 MAINTENANCE Like your engine, your SEA FROST needs periodic checking. ROUTINELY CHECK: 1. Check the refrigerant charge, never operate the syst

9 DETAIL OF CONDENSER ZINC ASSEMBLY To change the zinc, first close the engine seacock. Using two 7/16 open-end wrenches, hold the brass plug and