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Table of Contents
Related Manuals for Altec AIR MHR Series
Summary of Contents for Altec AIR MHR Series
- Page 1 MHR SERIES HEATLESS REGENERATIVE AIR DRYERS...
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Page 2: Table Of Contents
TABLE OF CONTENTS 3 - INTRODUCTION 3 - INTRODUCTION MHR HEATLESS REGENERATIVE DRYING 4 - APPLYING YOUR DRYER 4 - DRYER SIZING AND CORRECTION FACTORS 5 - INSTALLATION 6 - INSTALLATION GUIDE 7 - PRINCIPLE OF OPERATION ... -
Page 3: Introduction
INTRODUCTION Thank you for selecting an MHR series regenerative air dryer from Altec AIR . The regenerative air dryer is specifi- cally designed and manufactured for drying and purifying compressed air generated by an air compressor. Please read this instruction manual carefully before using the air dryer. -
Page 4: Applying Your Dryer
Altec AIR dryers are sized according to air flow not pipe size. The dryer requires 10% to 15% of inlet airflow (SCFM) for regeneration. The difference between the inlet and outlet flow is the amount of purge air required. -
Page 5: Installation
INSTALLATION DRYER LOCATION / VENTILATION Install dryer only in a well-ventilated, clean, dry area and keep at least 3 feet between the dryer, other equipment and the walls. AMBIENT TEMPERATURES Suitable ambient temperature for the refrigerant dryer is a MIN of 32°F to a Max of 110°F. The performance of the dryer will be significantly decreased when the air dryer is subject to temperatures higher than 110°F. -
Page 6: Installation Guide
INSTALLATION GUIDE 1 – AIR COMPRESSOR 5 – MHR SERIES AIR DRYER 2 – ADF SERIES DRAIN VALVE 6 – AP SERIES AFTER-FILTER 3 – RECEIVER TANK 7 – 3 VALVE BYPASS 4 – AC SERIES PRE-FILTER INSTALLATION A: Recommended for systems that consume less than or equal to the maximum capacity of the air compressor. -
Page 7: Principle Of Operation
PRINCIPLE OF OPERATION MHR Series heatless regenerative air dryers utilize the pressure swing principle of operation. Compressed air saturated with water vapor passes through the inlet valve and flows upward through the desiccant in tower "A''. Tower "A" is said to be "ON-LINE'.' The activated alumina desiccant adsorbs the water vapor in the com- pressed air and the pressure dew point is lowered to a minimum of -40°F. -
Page 8: Dryer Indicating Lights
DRYER INDICATING LIGHTS Tower Drying – The Tower Drying LED will be illuminated indicating which tower is online and in the drying mode. Tower Regenerating – The Tower Regenerating LED will be illuminated indicating which tower is off line and in the Regenerating mode. Repressurizing –... -
Page 9: Maintenance
MAINTENANCE CAUSE INJURY SHOULD YOU ATTEMPT TO DISASSEMBLE WHILE PRESSURIZED. Purge Muffler At high pressures a clogged muffler could result in a high backpressure and could result in mechanical failure or personal injury. For this reason the purge muffler must be periodically checked for any restrictive debris. If pres- sure is observed on the offline tower replace muffler immediately.TO AVOID INJURY, DEPRESSURIZE DRY- ERRFORMI... - Page 10 PNEUMATIC CONTROLS...
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Page 11: Electrical Schematic
ELECTRICAL SCHEMATIC... -
Page 12: Econo-Purge Controller
ECONO-PURGE CONTROLLER (OPTIONAL) NOTE: At ini al startup and during the first six months of con nuous dryer opera on, the Econo-Purge Controller logic SHOULD NOT BE ACTIVATED. A condi oning process must occur in new desiccant, this will allow the desiccant to remove its precise water vapor capacity from the airflow. - Page 13 TROUBLESHOOTING GUIDE PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Elevated Dew Point Insufficient purge rate 1. Check purge flow settings. 2. Check purge piping for obstruction 3. Clean purge piping and muffler Inlet air/gas pressure below 1. Check pressure source/design condition Flow rate higher than design 1.
- Page 14 TROUBLESHOOTING GUIDE PROBLEM PROBABLE CAUSE CORRECTIVE ACTION Dryer Fails to Pres- Faulty purge valve 1. Check purge valve and its solenoid valve. surize 2. Refer to earlier steps if no pilot air is detect- 3. Check timer sequencing Dryer De-pressurizes Purge valve does not close;...
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