General Air Products Dry Air Pac DAP2000 Installation, Operation And Maintenance Manual
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General Air Products Dry Air Pac DAP2000 Installation, Operation And Maintenance Manual

Engineered compressed air drying systems for dry pipe sprinkler system corrosion mitigation and cold storage/freezer room applications
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ENGINEERED COMPRESSED AIR DRYING SYSTEMS
FOR DRY PIPE SPRINKLER SYSTEM CORROSION MITIGATION
Installation, Operation and
Maintenance Manual
MODELS DAP500, DAP1000 & DAP2000
Model Number
DAP500
DAP1000
DAP2000
* System capacity is +/- 10% due to site location and conditions.
Dry Air Pac™
AND COLD STORAGE / FREEZER ROOM APPLICATIONS
System Capacity*
500 Gallon
1000 Gallon
2000 Gallon
1-800-345-8207
Call
or visit our web site for our complete product listing
www.GeneralAirProducts.com
Compressor HP
Dryer Rating SCFM
2
5
5
Approximate Shipping
Weight
10
375lbs
20
500lbs
27
550lbs
revision 070820PLC

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Summary of Contents for General Air Products Dry Air Pac DAP2000

  • Page 1 Dry Air Pac™ ENGINEERED COMPRESSED AIR DRYING SYSTEMS FOR DRY PIPE SPRINKLER SYSTEM CORROSION MITIGATION AND COLD STORAGE / FREEZER ROOM APPLICATIONS Installation, Operation and Maintenance Manual MODELS DAP500, DAP1000 & DAP2000 Approximate Shipping Model Number System Capacity* Compressor HP Dryer Rating SCFM Weight DAP500...

  • Page 2: Table Of Contents

    Table of Contents Safety Guidelines Section 1 - Installation Instructions 1.1 Location 1.2 Changing the Oil 1.3 Electrical Connection 1.4 Prior Run Time 1.5 Filter 1.6 Dew Point Monitor 1.7 DAP Outlet 1.8 DAP Air Maintenance Device 1.9 Electronic Drain Valve Section 2 - Start-Up Instructions Section 3 - Operation 3.1 - Description of Operation...

  • Page 3: Safety Guidelines

    Safety Guidelines This manual contains information that is very important to know and understand. This information is provided for SAFETY and to PREVENT EQUIPMENT PROBLEMS. To help recognize this information, observe the following symbols. Danger indicates an imminently hazardous situation which, if not avoided, WILL DANGER result in death or serious injury.

  • Page 4: Prior Run Time

    Section 1 - Installation Instructions (cont’d) 1.3 Connecting Voltage Connect supply voltage to separate line terminals L1, L2 and L3 on terminal block. All wiring must conform to the National Electrical Code (NEC) and any local or building codes. Wire size must be capable of carrying the unit load without dropping the voltage at the CAUTION terminals below normal operating levels.

  • Page 5: Dap Outlet

    Section 1 - Installation Instructions (cont’d) 1.7 DAP Outlet The Dry Air Pac outlet is from the combination particulate filter with pressure regulator, mounted on the lower right side of the unit facing the control panel. Connect this outlet to the sprinkler system air inlet. 1.8 DAP Air Maintenance Device The Dry Air Pac has a UL Listed/FM approved Air Maintenance Device built into the unit.

  • Page 6: Section 3 - Operation

    Section 2 - Start-up Instructions (cont’d) If water in the pipe is a concern, the piping system can be dried as follows: Crack open an inspection test point on the far end of the sprinkler system to allow the current wet air in the sprinkler system to be purged out of the system. This leak should be adjusted to cause the compressor to run, after filling the system to pressure, no more than 4 times per hour.

  • Page 7: Setting Purge Pressure

    Section 3 - Operation (cont’d) The purge air enters the top of the offstream tower and travels downward to pick up the water molecules from the desiccant as the pressure drops to atmosphere. The wet purge air exits the bottom of the tank and is vented to atmosphere by way of the purge mufflers.

  • Page 8: Dryer Operating Sequence

    Section 3 - Operation (cont’d) 3.4 Dryer Operating Sequence The dryer operates on a 4-minute total cycle. There are four valves on the inlet manifold, and four on the outlet manifold. The outlet valves are check valves, which sequence automatically with the operation of the inlet valves. SV1 and SV2 are the inlet valves to the towers, SV3 and SV4 are the opposite purge valves such that when the left tower is drying and its inlet valve is open, the purge valve on that tower is closed.

  • Page 9: Section 5 - Desiccant Replacement

    Section 5 - Desiccant Replacement NOTE: You will need the following in order to service the unit: Annual Service Kit - "General" part number: KAMA01 1. Close the outlet valve of the unit and turn the power to the unit off. 2.

  • Page 10: Section 6 - Setting Pump Head Bolt Torque

    Section 5 - Desiccant Replacement (cont’d) 9. Remove and replace the pre & afterfilter elements prior to putting the unit back in service. This is accomplished by unscrewing the bowls and following the kit instructions to replace the elements. We would be happy to look at the old elements if you feel there is any question as to the condition.

  • Page 11: Section 7 - Trouble Shooting Guide

    Section 7 - Trouble Shooting Guide PROBLEM PROBABLE CAUSE SOLUTION Dryer is set to operate at 70 to 100psig. Re-set regulator on DAP Air Maintenance Device, or throttle outlet to hold back pressure on dryer side to normal settings. Check to see that Air Maintenance Device bypass valve has not been opened.
  • Page 12 Section 7 - Trouble Shooting Guide Problem Possible Causes Solution Low inlet pressure. Lower flow rate to system. Check tower-operating sequence to verify and identify which valves are Switching valve failure. operating. Excessive Pressure Drop Desiccant breakdown Change desiccant Clogged filters Change filter elements Valve shut Open valve...

  • Page 13: Section 8 - Dry Air Pac General Arrangement

    Section 8 - Dry Air Pac General Arrangement 8.1 General Arrangement for Models DAP 1000 & DAP 2000...

  • Page 14: General Arrangement For Models Dap 500

    Section 8 - Dry Air Pac General Arrangement (cont.) 8.2 General Arrangement for Models DAP 500...

  • Page 15: Section 9 - Dry Air Pac Electrical Schematics

    Section 9 - Dry Air Pac Electrical Schematics 9.1 Electrical Schematic - Wiring Diagram, DAP With PLC Option...
  • Page 16 Section 9 - Dry Air Pac Electrical Schematics 9.2 Electrical Schematic - Single Phase, 115v/60hz or 110v/50hz...
  • Page 17 Section 9 - Dry Air Pac Electrical Schematics 9.3 Electrical Schematic - Single Phase, 208-230v/60hz or 220v/50hz...
  • Page 18 Section 10- Dry Air Pac P & ID Diagram...
  • Page 19 Purchaser, to establish a claim under this warranty. for certain purposes, which may vary from those in neighboring areas. While General Air Products, Inc. attempts to assure that its products comply with such codes, it cannot guarantee compliance, Replacement parts provided under the terms of the warranty are...

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