Blower Purge Desiccant Dryers
Arrow's "BP" series blower purge regenerative
dryers are more economical to operate than heated or heatless
regenerative dryers. An external blower supplies heated
atmospheric air as the purge air source for regeneration.
This allows total air compressor capacity for plant operations.
Eliminating the use of compressed air as purge allows the
plant to more economically size the compressor only for
plant operations.
• Standard Features • Specifications
• Options • Manual
• Drawings
Standard Features:
- Fully automatic to provide the most efficient operation
- Panel mounted Gauges to monitor pressure
- Indicator Lights that display tower operating status
- Reliable pneumatic valve operation
- Controlled repressurization to eliminate line surges and desiccant attrition.
- Removable stainless steel diffuser screens
- Nema 4 electrical construction
- Universally accepted 120V/1ph/60Hz
- Power on indicator to show dryer status
- Tower relief valves to prevent overpressurization.
- ASME coded and stamped pressure vessels.
- Microprocessor controls or PLC for controls.
- Control air line filter with replaceable element to protect pneumatic circuitry.
- Exhaust purge muffler for quiet operation
- Pressure alarm package that indicates failure to shift, failure to depressurize, failure to repressurize and failure to purge.
- Heater Thermostat to control and maintain user adjusted regeneration temperature to account for changing flow or seasonal moisture variations.
- Interlock circuit to protect units from heater burnout due to loss of purge air flow.
Specifications:
| • Inlet PSIG |
100 |
| • Inlet Temperature |
100°F |
| • Ambient Temperature |
100°F |
| BP123 |
200 |
6 |
0.75 |
1-1/2" NPT |
74 |
1375 |
| BP144 |
350 |
9 |
1.12 |
2" NPT |
88 |
2260 |
| BP183 |
600 |
15 |
1.5 |
2-1/2" NPT |
80 |
2900 |
| BP204 |
800 |
20 |
2.24 |
3" Flange |
92 |
4150 |
| BP244 |
1100 |
36 |
3.73 |
3" Flange |
98 |
5600 |
| BP304 |
1500 |
40 |
7.46 |
4" Flange |
94 |
7425 |
| BP325 |
2100 |
50 |
7.46 |
4" Flange |
101 |
8675 |
| BP365 |
3000 |
75 |
11.19 |
6" Flange |
106 |
11200 |
| BP425 |
4000 |
105 |
11.19 |
6" Flange |
109 |
15500 |
| BP485 |
5000 |
140 |
14.92 |
6" Flange |
111 |
17700 |
| BP545 |
6500 |
175 |
22.38 |
6" Flange |
117 |
20900 |
| BP605 |
8000 |
230 |
37.3 |
8" Flange |
126 |
26400 |
| BP665 |
10000 |
280 |
55.95 |
8" Flange |
130 |
31600 |
| BP725 |
12000 |
340 |
74.60 |
10" Flange |
134 |
37800 |
| Standard Operating Pressure |
150 psig maximum |
| Standard Voltage |
480V/3ph/60Hz |
| Pre and After filters |
must be used on all dryers |
| Maximum Pressure Drop |
2 psi |
Options:
| Dew Point Demand Plus |
Dew Point Demand |
| Remote Alarm Contacts |
Remote Alarm Dry Contacts |
| NEMA 7 Explosion Proof Electrical Construction |
Pre-Piped connection with Pre and after Filters |
| Pre-Piped filter package with three valve dryer bypass |
Pre-Piped filter package with seven valve dryer bypass |
| Heater Overtemp Alarm |
Blower Purge Cool Down Loop |
| High Humidity Alarm |
RS-232 Serial Communications |
| Power Saver Thermal Control |
Low Ambient Package |
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