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RDH-HP Series
Pressure-Swing Desiccant Type Compressed Air Dryers
Models: RDH-HP-715G, RDH-HP-1550G, RDH-HP-5200G
F O R M N O . : 3 2 4 5 4 3 0
R E V I S I O N : 0 4 / 2 0 1 4
RATED
MODELS
FLOW
RDH-HP-715G
715 SCFM
RDH-HP-1550G
1550 SCFM
RDH-HP-5200G
5200 SCFM
R E A D A N D U N D E R S TA N D T H I S M A N UA L P R I O R TO O P E R AT I N G O R S E R V I C I N G T H I S P R O D U CT.
REFER
AS
MODELS
715
1550
5200
I N S T R U CT I O N M A N UA L
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Related Manuals for SPX RDH-HP Series
Summary of Contents for SPX RDH-HP Series
- Page 1 I N S T R U CT I O N M A N UA L RDH-HP Series Pressure-Swing Desiccant Type Compressed Air Dryers Models: RDH-HP-715G, RDH-HP-1550G, RDH-HP-5200G F O R M N O . : 3 2 4 5 4 3 0 R E V I S I O N : 0 4 / 2 0 1 4 R E A D A N D U N D E R S TA N D T H I S M A N UA L P R I O R TO O P E R AT I N G O R S E R V I C I N G T H I S P R O D U CT.
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Page 2: Table Of Contents
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 of one (1) year from the date of shipment to the buyer by the manufacturer or manufacturer’s authorized distributor, or eighteen months from the date of shipment from the factory, whichever occurs first, provided such defect is discovered and brought to the manufacturer’s attention within the aforesaid warranty period. - Page 3 IMPORTANT: GENERAL SAFETY READ PRIOR TO STARTING THIS EQUIPMENT INFORMATION A. UNPACKING 1. Pressurized devices: This equipment is a pressure This shipment has been thoroughly checked, packed and inspected containing device. Do not exceed maximum operating pressure as shown on equipment serial number tag. before leaving our plant.
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Page 4: Description
1.0 DESCRIPTION 1.1 Function 1.1.1 Dryer Desiccant is regenerated by driving off (desorbing) the water collected Dual tower regenerative desiccant dryers are an economical and reliable on its surface. Pressure-swing (also called heatless or heaterless because no outside heat is added) dryers regenerate by expanding a way to dry compressed air to dew points below the freezing point of wa- portion (approximately 14 - 15% at 100 psig, 7 barg) of the dried air to ter (dew points as low as -150°F (101°C) [1 ppb @ 100 psig, 7.0 barg]... - Page 5 1.2 Description of Operation 1.2.1 Dryer (Refer to Figure 1A.) Compressed air flows through inlet switching valve (3A) (normally open) to tower (4A) where the air is dried. After the air is dried it flows through check valve (5A) and then to the dryer outlet. A portion of the dry air, the purge stream, branches off from the main air OUTLET stream prior to the outlet.
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Page 6: Installation
2.0 INSTALLATION 2.1 Location in the compressed air system. 2.3 Minimum & Maximum Operating Conditions The compressed air supply inlet should be checked periodically to ensure NOTE: Air Compressor should be adequately sized to handle air system that equipment design specifications are not exceeded. Normally the demands as well as purge loss. - Page 7 Icon idenification Air Inlet Air Outlet Left Tower Pressure Gauge Right Tower Pressure Gauge Purge Pressure Gauge Electrical Entry Inlet Pressure Gauge Outlet Pressure Gauge Automatic Condensate Drain Purge Muffler FIGURE 2B...
- Page 8 FIGURE 2C Model 715G PROCESS AIR OUTLET PROCESS AIR INLET NPS 3 BOSS FITTING NPS 3 BOSS FITTING ELECTRICAL ENCLOSURE NEMA CLASS 4/4X AIRLINE PREFILTER POWER SWITCH AIRLINE AFTERFILTER 3 PRONG MALE ELECTRICAL PLUG HIGH EFFICIENCY OIL REMOVAL PREFILTER ENCLOSURE DETAIL (ENLARGED) MOUNTING HOLES 7/8"...
- Page 9 FIGURE 2D Model 1550G ELECTRICAL ENCLOSURE DESICCANT DRAIN SEE DETAIL A PORTS DESICCANT FILL PORT PURGE PRESSURE GAUGE MOUNTING HOLES RIGHT TOWER 7/8" DIA. PRESSURE GAUGE ELECTRICAL ENCLOSURE LEFT TOWER NEMA CLASS 4/4X PRESSURE GAUGE POWER SWITCH 3 PRONG MALE ELECTRICAL PLUG DETAIL A SEPARATOR PREFILTER...
- Page 10 FIGURE 2E Model 5200G PURGE PRESSURE GAGE RIGHT TOWER PRESSURE GAGE PROCESS AIR OUTLET PROCESS AIR INLET DESICCANT DRAIN NPS 3 BOSS FITTING ELECTRICAL ELECTRICAL ENCLOSURE NPS 3 BOSS FITTING PORT 4 PLACES LEFT TOWER ENCLOSURE NEMA CLASS 4/4X 4 PLACES PRESSURE GAGE SEE DETAIL A OUTLET SHUT OFF...
- Page 11 2.6 Electrical Connections 2.7 Provisions for Purge Exhaust Purge exhaust must be routed through the factory supplied mufflers or Standard and Automatic Purge Saving piped to a remote location. 2.6.1 Power Connections 2.7.1 Purge mufflers - If shipped separately, install purge exhaust muf- NOTE: Check Serial Number Tag for correct voltage.
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Page 12: Operation
3.0 OPERATION 3.1 Start-up 3.1.1 Controller Settings- Set or verify settings on controller 3.1.1.1 Standard Control Board WARNING Enclosure may have live electric parts. De-energize dryer before opening enclosure. 3.1.1.1.1 Voltage Selection - Set the voltage selection switch located at the lower edge of the power board for the proper voltage. - Page 13 3.2 Operational Check Points 3.1.2 SLOWLY pressurize dryer to full line pressure (open inlet isola- tion valve, outlet isolation valve remains closed). 3.2.1 Standard Unit NOTE: During initial start-up check entire system for leaks. If neces- 3.2.1.1 Power to unit - sary, depressurize and correct any leaks.
- Page 14 3.2.3 All MODELS - Determine if air control valves are operating and 3.3.1.2 Run timer through a tower change cycle until pressure gauges sequencing correctly. on both towers read 0 (test mode may be used to speed this up). 3.2.3.1 Inlet switching and purge/repressurization valves. 1) Tower pressure gauge of tower on-line should read line pressure.
- Page 15 TABLE 3A Model RDH-HP Inlet Temperature Outlet Pressure Dew Point: -40°F Outlet Pressure Dew Point: -100°F 100°F 10 Minute Cycle 4 Minute Cycle Inlet Inlet Purge Repress Timer Purge Maximum Purge Repress Timer Purge Maximum Pressure Pressure Time Time board DIP Orifice Purge Time...
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Page 16: Maintenance
4.0 MAINTENANCE WARNING 4.2 Pilot Air Filter - Element Replacement - The heatless desiccant dryer is a pressure containing device. Depressurize Models 370 scfm and larger before servicing. (See Section 3.3) 4.2.1 Frequency of replacement - Pilot air filter contains a filter element which should be changed yearly 4.1 Desiccant Replacement or sooner if pressure drop across cartridge prevents valves from actu- NOTE: The use of the correct replacement desiccant is necessary for... - Page 17 4.4 Test Mode WARNING Enclosure contains electricity. Use caution when working inside box. 4.5.1 Test Mode - Standard Control Panel 4.5.1.1 Wait until point in cycle when right tower is drying and left tower has completed regeneration and repressurization (both towers at full line pressure).
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Page 18: Troubleshooting
5.0 TROUBLESHOOTING SYMPTOM POSSIBLE CAUSE(S CORRECTIVE ACTION 5.1 Indicator lights not illuminated No power to unit Check voltage at terminal board. On/Off Switch off Turn on. Switch malfunctioning Replace switch. 5.2 Moisture Indicator turns yellow Maximum flow being exceeded Refer to Table 3A to determine maximum flow. (elevated outlet dew points) Design conditions being exceeded Refer to Section 3.5 to determine if dryer is being operated within its design... -
Page 19: Replacement Parts
6.0 REPLACEMENT PARTS Description Model HP-715G Model HP-1550G Model HP-5200G Quantity Power On/Off Selector Switch 3158486 3158486 3158486 Pressure Switch 7417131 7417131 7417131 Switching Valve Pilot Solenoid Valve (coil only) 4009808 4009808 4009808 Purge Pilot Solenoid Valve (coil only) 4009808 4009808 4009808 Switching Valve Pilot Solenoid Valve Rebuild Kit... - Page 20 RDH-HP-5200G 1000 Philadelphia Street Canonsburg, PA 15317-1700 U.S.A. P: (724) 745-1555 F: (724) 745-6040 E: hankison.rental@spx.com www.rentaldryers.com Improvements and research are continuous at SPX. Specifications may change without notice. ISSUED 04/2014 Form No.: 3245430 Revision: A COPYRIGHT ©2014 SPX Corporation...
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