3227447 Rev.
GENERAL SAFETY INFORMATION RECEIVING, MOVING, AND UNPACKING 1. PRESSURIZED DEVICES: A. RECEIVING This equipment is a pressure containing device. • • Do not exceed maximum operating pressure as shown on equipment serial number tag. Make sure equipment is depressurized before working on or disassembling it for service. 2. ELECTRICAL: This equipment requires electricity to operate. • Install equipment in compliance with all applicable electrical codes.
INSTALLATION System Arrangement Ambient Air Temperature Locate the dryer indoors where the ambient air temperature will be between 40°F and 100°F. Intermittent operation at ambient temperatures up to 113°F will not damage the dryer but may result in a higher dew point or dryer shutdown due to high refrigerant discharge pressure (see Field Service Guide). Do not operate air-cooled dryers at ambient air temperatures below 40°F. Such operation may result in low suction pressure, causing freeze-up.
INSTRUMENTATION START-UP/OPERATION ON/OFF Switch Follow the procedure below to start your dryer. Failure to follow the prescribed start-up procedure will invalidate the warranty. If problems arise during start-up, call your distributor. The dryer is equipped with an ON/OFF switch on the front panel. A light signals when the dryer is on.
MAINTENANCE The dryers require little maintenance for satisfactory operation. Good dryer performance can be expected if the following routine maintenance steps are taken. Disconnect power supply and depressurize dryer before performing any maintenance. General For continued good performance of your refrigerated dryer, all refrigeration system maintenance should be performed by a competent refrigeration mechanic.
FIELD SERVICE GUIDE Problems most frequently encountered with refrigerated dryers are water downstream of the dryer and excessive pressure drop. Most causes can be identified and remedied by following this guide. Closed refrigeration systems are potentially dangerous. Work on the refrigeration system must be done only by a competent refrigeration mechanic. Do not release fluorocarbon refrigerants to the atmosphere. All refrigerants must be recovered per EPA requirements.
ENGINEERING DATA MODEL 25 35 50 Rated Capacitya - (scfm) 25 35 50 Inlet /Outlet Connections - (inches) 3/4 3/4 3/4 Height - (inches) 22.2 22.2 22.2 Length - (inches) 15.5 15.5 19.7 Width - (inches) 14.5 14.5 19.7 115/1/60 115/1/60 115/1/60 Refrigerant Compressor Rating - (hp) 1/4 1/4 1/3 Input Power - (kW) 0.47 0.47 0.
ELECTRICAL SCHEMATICS R ON/OFF SWITCH WITH RUNNING LAMP 2 5 6 PTC STARTER T S COMP. 1PH M C DRAIN SOL.
AIR AND REFRIGERANT FLOW SCHEMATICS HEAT EXCHANGER EVAPORATOR REHEATER AIR INLET AIR OUTLET AUX. CONDENSER CHILLER ELECTRONIC DRAIN VALVE C.I. COLOR INDICATOR DRAIN OUTLET LIQUID RECEIVER FILTER DRYER CONSTANT PRESSURE EXPANSION VALVE REF.
REPLACEMENT PARTS Item 25 35 50 Refrigerant Compressor 3149273 3146980 3149274 Condenser 3149275 3149275 3149275 Liquid Receiver/Filter Dryer 1283369 1283369 1283369 Constant Press.
WARRANTY The manufacturer warrants the product manufactured by it, when properly installed, operated, applied, and maintained in accordance with procedures and recommendations outlined in manufacturer’s instruction manuals, to be free from defects in material or workmanship for a period as specified below, provided such defect is discovered and brought to the manufacturer’s attention within the aforesaid warranty period.
