Manual

ManualsBrandsVan Air Systems ManualsEquipmentD8

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WARNING

DO NOT REMOVE, REPAIR, OR REPLACE ANY ITEM ON THE DRYER WHILE IT IS UNDER PRESSURE. DEPRESSURIZE

THE DRYER COMPLETELY BEFORE STARTING INSTALLATION AND/OR MAINTENANCE PROCEDURES. SERIOUS

PERSONAL INJURY MAY RESULT IF THESE SAFETY RULES ARE NOT FOLLOWED.

DO NOT OPERATE THIS PRESSURE VESSEL ABOVE MAXIMUM WORKING PRESSURE (MWP) AT MAXIMUM

OPERATING TEMPERATURE (

F) AS SHOWN ON THE ASME DATA PLATE.

THIS ASME CODE VESSEL MUST BE PROTECTED BY A PRESSURE RELIEF VALVE. Refer to OSHA 1910.169 Par.

b, Sub. Par (3) and ASME Boiler and Pressure Vessel Code, Section VIII, Division 1, UG-125 through UG-136. Also

check government regulations, i.e., state and local codes.

DO NOT WELD, GRIND, OR SAND VESSEL, OR IT WILL NOT BE SAFE TO OPERATE. (Note: Any alteration to the

vessel will void the ASME Code Certification and the warranty.)

ANY DAMAGE TO THE VESSEL CAN MAKE IT UNSAFE. INSPECT OUTSIDE AND INSIDE OF VESSELS

REGULARLY FOR BULGES, CORROSION, DENTS, GOUGES, LEAKS OR SIGNS OF FIRE. IF DAMAGED, TAKE OUT

OF SERVICE IMMEDIATELY AND NOTIFY YOUR CERTIFYING AUTHORITY.

USE THE PROPER SAFETY RULES FOR THE GAS BEING PROCESSED.

DO NOT REMOVE THE FILL PORT UNTIL ALL AIR PRESSURE IS OUT OF THE VESSEL.

JANUARY 2005

P/N 32-0271 rev C

INSTALLATION, OPERATION, & MAINTENANCE INSTRUCTIONS

FOR

SINGLE TOWER

COMPRESSED AIR DRYER

MODELS

D-4 & D-8

Summary of content (8 pages)

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JANUARY 2005 P/N 32-0271 rev C INSTALLATION, OPERATION, & MAINTENANCE INSTRUCTIONS FOR SINGLE TOWER COMPRESSED AIR DRYER MODELS D-4 & D-8 WARNING DO NOT REMOVE, REPAIR, OR REPLACE ANY ITEM ON THE DRYER WHILE IT IS UNDER PRESSURE. DEPRESSURIZE THE DRYER COMPLETELY BEFORE STARTING INSTALLATION AND/OR MAINTENANCE PROCEDURES. SERIOUS PERSONAL INJURY MAY RESULT IF THESE SAFETY RULES ARE NOT FOLLOWED.
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SECTION 1 INTRODUCTION 1.0 PURPOSE OF OPERATION The purpose of installing a Van Air single tower dryer in a compressed air system is to remove the water vapor (humidity) which has been drawn into the system at the compressor intake. The Van Air process dries the air as it flows through the vessel, which is filled with a special drying agent. The dryer operates automatically. There are no moving parts and no external source of power is required.
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SECTION 2 INSTALLATION FIGURE 3 RECOMMENDED INSTALLATION DRAWING 2.2-D MANUAL DRAIN VALVE The drain port is a 1/2" NPT tapped hole in the center of the vessel bottom head. Shipped separately with the dryer is (1) 1/2" NPT close nipple and (1) 1/2" NPT brass ball valve. Install the nipple and valve into the drain port. The drain of the dryer can be remotely piped away from the dryer. Make sure that the line is vented to atmospheric pressure.
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SECTION 2 INSTALLATION FIGURE 4 DRYER DIMENSIONAL DETAILS APPROX MODEL WEIGHT NO. w/o Desiccant A B C D E F G H J D4 30 LBS 27-3/4" 704.9mm 6-15/16" 176.2mm 22-7/16" 569.9mm 19-5/16" 490.5mm 6-1/2" 165.1mm 4-1/2" 114.3mm 3/4" NPT 1-3/8" 34.9mm 5-1/8" 130.2mm D8 60 LBS 35-1/16" 890.6mm 9-1/2" 241.3mm 28" 711.2mm 21-3/4" 552.5mm 10-5/8" 269.9mm 8-5/8" 219.1mm 3/4" NPT 1-9/16" 39.7mm 5-1/8" 130.2mm SECTION 3 3.
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SECTION 3 On a new installation, continue to drain all downstream traps for several days (or until no water is evident) after dryer is installed. This period is required to dry out any accumulated water in the compressed air system. Once the water is removed, the downstream traps should not need to be drained again. 3.2-B REFILLING THE DRYER WITH DESICCANT During the VAN AIR drying process, the desiccant tablets dissolve slowly.
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SECTION 4 MAINTENANCE FIGURE 5 BED LEVEL DETAIL BED DIMENSIONS INCHES (centimeters) MODEL D4 D8 DRY-O-LITE QUANTITY* POUNDS (kilograms) MODEL D4 D8 B MIN. Level C Total Depth 5-1/4" 7-11/16" 17-11/16" (13.33) (19.53) (44.93) 6-15/16" 12-1/2" 21-11/16" (17.62) (31.75) (55.09) SP QUANTITY* POUNDS (kilograms) 10 BF QUANTITY* POUNDS (kilograms) Lbs./In of bed** MIN. Level MAX Level MIN to MAX Level Lbs./In of bed** MIN. Level MAX Level MIN to MAX Level Lbs./In of bed** MIN.
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SECTION 5 REPLACEMENT PARTS DESCRIPTION ITEM PART NO.
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SECTION 6 Bypass valve open or faulty. Check the dryer bypass valve. It might be faulty or open allowing untreated air to enter the air system. Low or no desiccant in the dryer. Check the dryer desiccant bed level. Reference Section 4.4 for filling quantities and procedures. 3. DECREASED PERFORMANCE, low desiccant usage. The desiccant bed may be contaminated. The dryer will tolerate normal amounts of compressor lubricant.