Section 3 • Installation
AIR COOLED OIL COOLERS
The following are general recommendations. Refer to specific air cooled oil cooler manufacturer instructions for storage recommendations.
•If the coolers are to be stored or not operated for an extended period of time, the fan motors may ingress moisture if they are not protected or operated regu- larly. In severe cases, the moisture will reduce the in- sulation level of the windings or cause rusting of the bearings necessitating removal for repairs at a motor repair facility. This is a common problem with large generating installations when the coolers are often ready but commissioning of the main
•The simplest remedy for installed coolers is to oper- ate the fan motors for a few hours every week dur- ing the downtime period until regular operation resumes. The fan motors on stored coolers must be protected from the elements by covering them with waterproof tarps.
Compressor Unit Inspections Prior to Storage or Installation
The compressor unit must be inspected prior to instal- lation since components could have come loose and/or damaged during shipment or moving.
•Check for loose bolts, particularly the compressor and motor mounting nuts.
•Check for bent or damaged components. The com- pressor unit should have also been inspected prior to
•Check that the nitrogen pressure is still holding pres- sure. The pressure gauge is located at the discharge bleed valve on the block and bleed assembly. Any leaks must be fixed and the system purged and re- charged with dry nitrogen.
Recommended Onsite Tools
The tools recommended to have on site are important for troubleshooting, inspections and compressor unit operation. Besides general mechanic tools, these tools are recommended:
•Oil Pump (maximum of
•Infrared Heat Gun
•Torque Wrenches (with ranges from 0 to 600
•Sockets and wrenches up to
•Voltmeter
VSG/VSSG • Installation, Operation and Maintenance Manual •Vilter/Emerson • 35391SSG | 3 – 3 |
