Instructions 2600-2 Page 3
INSTRUCTIONS FOR ASSEMBLY
SERVICING A typical two-stage blower is shown. Single stage blowers use identical inner case and impeller, but omit stationary vane and one impeller, and have a shallower outer case. Three-stage blowers use two stationary vanes, three impellers, and use a peripheral spacer between stationary vanes.
1. Mount inner case to base. 2. Slide heat slinger on motor shaft. Mount motor to base, but do not tighten bolts. 3. Center heat slinger in housing guard and tighten. 4. Mount inner impeller on motor shaft and line up motor so flat side of impeller is 1⁄8 " away from inner case all around. Tighten motor bolts. 5. Tighten impeller hub screws snugly. 6. Apply sealant to case flange. 7. Mount stationary vanes with case flange pins and drive them snugly into inner case. 8. Mount impeller shaft, but do not tighten. 9. Apply sealant, mount outer case and bolt in place. 10. Slide impeller forward against inner side of outer case then back again 1⁄8 ". Tighten impeller hub screws snugly. 11. Assemble heat shield. 12. Turn motor over several times by hand to check clearances. 13. Start motor and listen for clicking that would indicate misalignment of impellers. If this should occur, shut motor off immediately to prevent serious damage to impellers. 14. Check rotation of impellers according to arrow on case.
INSTRUCTIONS FOR DISASSEMBLY
1. Remove case flange bolts and nuts. 2. Remove outer case, being careful not to bump impeller. 3. Loosen impeller hub screws and remove impeller. CAUTION: Impellers are accurately balanced and should be handled with care. Grasp impellers by hubs only. 4. For multi-stage blowers, drive out the two case flange pins from the motor side to remove stationary vanes (these pins support vanes so they do not drop on the impeller). Pins should remain in the vanes. 5. If necessary to remove inner case, make note of location of each shim and spacer. 6. Remove heat shield and loosen the heat slinger. 7. Remove impeller as in Step 4. 8. Remove inner case and heat slinger. 9. Remove motor if required.
WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.
CONTACT fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
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