Nitrogen / Air Maintenance Device for Fire Sprinkler Systems
Model
NAMD-1
UNITED
Fire Systems
Division of United Fire Protection Corporation
1 MARK ROAD
KENILWORTH, NJ 07033 USA
PHONE: 908-688-0300 FAX: 908-688-0218
UFS-710 P/N 31-100013-002 Rev. 1.04 Aug 2020
INSTRUCTION SHEET
Page 4 of 4
This document is provided for informational purposes only. UNITED Fire Systems assumes no responsibility
for the product’s suitability for a particular application. The product must be properly applied to perform as
intended. The information in this document is believed to be correct at the time of publication. UNITED Fire
Systems reserves the right to add to, delete, or revise any information in this document without notice.
4. INSPECTION AND MAINTENANCE (Continued)
4.2 Annual (Continued)
4.2.1 Ensure there is no pressure present in the
Model NAMD-1
device.
4.2.2 Hold device so that torque applied to strainer screen retainer does not move the device.
4.2.3 Refer to
Figure 1.
Apply suitable wrench to HEX on strainer screen retainer. Do NOT remove square plug.
4.2.4 Remove strainer screen retainer. Retain for replacement.
4.2.5 Examine rubber seal on strainer screen retainer. If damaged during removal, leakage may occur.
4.2.6 Remove strainer. Empty any loose material, and then flush with clean water. If necessary, use a wire brush to
remove trapped particles. Dry strainer screen thoroughly before replacement.
4.2.7 If strainer screen is damaged, replace with new strainer screen UFS P/N 30-500003-401.
4.2.8 Insert strainer screen.
4.2.9 Replace strainer screen retainer, tightening wrench-tight.
4.2.10 See 2. COMMISSIONING to return Model NAMD-1 device to service.
4.2.11 Leak check the strainer screen retainer / strainer body connection. Correct leak if necessary.
APPENDIX B - SC-W MANUAL
Summary of Contents for Nitrogen Pac SC-W
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