UNITED Nitrogen Pac SC-W, Installation, Commissioning Maintenance

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UNITED FIRE SYSTEMS - NITROGEN-
PAC™
MODEL SC-W
INSTALLATION, COMMISSIONING, AND MAINTENANCE MANUAL
REVISION 1.01 MAR 2021 - P/N 30-NPWICM-000
iii
5. MAINTENANCE 62
5.1 Monthly Inspection 64
5.1.1 Objective 64
5.1.2 Personnel 64
5.1.3 Instructions 64
5.2 Specific Procedures
– Monthly Inspection
64
5.2.1 Use of Model NA-2 N
2
Purity Analyzer to Measure Nitrogen Purity at Model SC-W Assembly 64
5.2.2 Inspection of Enclosure Inlet Filter Element
– Model SC-W Assembly
64
5.2.3 Inspection of Exhaust Fan Filter Element
– Model SC-W Assembly
64
5.2.4 Use of Model NA-2 N
2
Purity Analyzer to Measure Nitrogen Purity at Model PVA-2 64
5.3 Annual Maintenance 65
5.3.1 Objective 65
5.3.2 Personnel 65
5.3.3 Instructions 65
5.4 Specific Procedures
– Annual Maintenance
65
5.4.1 Replacement of Compressor Intake Filter
– Model SC-W Assembly
65
5.4.2 Replacement of Enclosure Inlet Filter Element
– Model SC-W Assembly
65
5.4.3 Replacement of Exhaust Fan Filter
– Model SC-W Assembly
65
5.4.4 Replacement of Filter Elements
– Model SC-W Assembly
66
5.4.5 Drainage of Accumulated Water at Model PVA Purge Vent Assembly 67
5.4.6 Replacement of Strainer at Model PVA Purge Vent Assembly 67
5.5 Maintenance Parts 67
6. TROUBLESHOOTING 68
APPENDICES
A N
2
Purity Analyzer
– Hand-Held Model NA-2
B Installation
– Model NAMD-1 Nitrogen / Air Maintenance Device (UFS-710)
C Checklist
– Commissioning – Model SC-W System (UFS-622)
D Checklist
– Monthly Inspection – Model SC-W System (UFS-623)
E Checklist
– Annual Maintenance – Model SC-W System (UFS-624)
F Coalescing and Particulate Filters
G Water Separator
H Limited Warranty
–
NITROGEN-
PAC™
Model SC Systems
J Limited Warranty
– TRUE ADVANCED PURGE™
Model TAP-G3 Device
K Limited Warranty
–
SPRINKLER ACCESSORIES Model NAMD-1 Device