Goulds Pumps VIT - IOM - Manual (Page 61)

Oil levels
Pump status Oil level
Not operating At or lower than 1/8 in. to 1/4 in. (0.635 to 0.3175 mm) from the top of the oil sight
gauge. Never operate the pump when the oil in the sight gauge is not at the required level.
Operating Lower than the required level as indicated on the oil sight gauge.
Changing the oil
The frequency with which you change the oil depends on the severity of the environment. When the oil in
the sight gauge is a dark brown color, it is time for an oil change. However, for a longer bearing life, it is
recommended that you change the oil every six months. Be sure to flush the oil reservoir with each oil change.
Disassembly
Disassembly precautions
WARNING:
• Make sure that the pump is isolated from the system and that pressure is relieved before you
disassemble the pump, remove plugs, open vent or drain valves, or disconnect the piping.
• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical injury.
• The pump and the components can be heavy. Make sure to use proper lifting methods, and wear steel-
toed shoes at all times. Failure to do so can result in physical injury or equipment damage.
• The pump can handle hazardous and toxic fluids. Identify the contents of the pump and observe
proper decontamination procedures in order to eliminate the possible exposure to any hazardous or
toxic fluids. Wear the proper personal protective equipment. Potential hazards include, but are not
limited to, high temperature, flammable, acidic, caustic, explosive, and other risks. You must handle
and dispose of pumped fluid in compliance with the applicable environmental regulations.
NOTICE:
Make sure that all replacement parts are available before you disassemble the pump for overhaul.
Disassemble the head and column
WARNING:
Never try to lift the entire pump assembly by the lifting lugs or eyebolts furnished for the driver only.
Always lift the pump with shackles through the lifting lugs or with eyebolts inserted through the flanges.
1. If equipped with mechanical seals, loosen the setscrews that fasten the seal to the pump shaft so that
the pump shaft can slide up or down within the seal.
2. Remove the necessary components:
If the pump is... Then remove...
Gear-driven The driveshaft between the gear and the prime mover.
Electric-motor driven The electrical connections at the conduit box and label the
electrical leads so they can be reassembled correctly.
3. Uncouple the driver, or gear box, from the pump shaft and mounting flanges, and then lift off by the
lifting lugs or eyebolts as furnished.
4. Disconnect the discharge head from the discharge piping.
5. Remove all hold-down bolts and integral piping.
6. Remove the coupling, packing box, or mechanical seal.
7. Continue with disassembly down to the bowls as described in the next section.
Maintenance (Continued)
Model VIT Installation, Operation, and Maintenance 59