Sea Frost DC 5000 installation instructions

b)If the pressure readings are over 50 psi with the compressor off, proceed to check charge level via sight glass and charge if needed. Charge loss indicates a leak that must be corrected.

STEP 2. If the system continues to operate improperly after Step 1, check for moisture or dirt plugging the valve. Run the system, observing closely the gauge readings and plate temperature, noting the following.

a)If system is warm upon start-up, a DIRT-PLUGGED Valve will show an immediate deep vacuum reading on suction side. Consult SEA FROST for cleaning techniques.

b)A MOISTURE-PLUGGED VALVE is indicated by a deep vacuum reading on the suction side after 1 to 5 minutes of operation from warm, followed by any combination of these symptoms:

c)The temperature at the compressor discharge fitting and the copper tube at the top of the condenser drops from hot to warm.

d)The temperature of the suction line from the V/U increases.

e)Moisture enters either through suction side leaks or during initial installation and will freeze at the V/U, reducing or eliminating refrigeration activity. Turning off the system and allowing the V/U to warm to above freezing, and then restarting, may temporarily solve the problem. If not, change the RFD as follows.

STEP 3. To change a saturated RFD, allow the system to warm to ambient temperature, thereby preventing moisture from condensing in the system. A light bulb in the icebox will speed the warming of the plate. WARNING: BEFORE DISASSEMBLY OF ANY PART IN THIS SYSTEM BE SURE THE REFRIGERANT IS COMPLETELY DISCHARGED. With a backup wrench holding the brass body of the Swagelok fittings on the RFD, loosen and back off the nuts. The tubing may be pulled out of the fittings. Remove the RFD and replace only with an identical unit by size and color. The SEA FROST RFD is a drier and also a receiver/filter. The DESICCANT and the oil in the Sea Frost RFD are special to this system and R-134a. Installation of the wrong part or oil may destroy the system.

NOTE: This system contains a measured amount of lubricating oil. Be sure the RFD being installed is a blue SEA FROST Model 24 1/4" x 1/4" RFD.

Follow the "remake" instructions for Swagelok fittings.

Reminder: To ensure removal of system moisture use a high vacuum pump, and evacuate the system with the highest possible ambient and plate temperatures. A light bulb or heat lamp in contact with plate is a good warming technique.

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