Dragon Wholesaling 178 Series Installation, Operation And Maintenance Instructions - Page 8

Browse online or download pdf Installation, Operation And Maintenance Instructions for Water Pump Dragon Wholesaling 178 Series. Dragon Wholesaling 178 Series 16 pages.

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5. Maximum hydraulic performance is in accordance with published performance curves.

Pump Records

Maintain data cards or pump records whenever possible. This will provide ready access to infor-

mation for ordering spare parts, and for evaluating pump performance. Information to be included

in these records should be:

1. Pump size and serial number.

2. Pump model number, impeller diameter, material of construction.

3. Mechanical seal manufacturer, type, code, and drawing number.

4. Motor horsepower and speed of operation.

5. Service conditions.

6. Frequency of operation.

7. Record of maintenance, including parts usage and general pump conditions.

8. Nomenclature and part number of replacement items.

On Dragon built pump packages we put a nameplate on the base with a job number. With this

job number we can tell you everything about the pump package, including anything special about

the motor, coupling type and size, impeller size, etc. With this information you have much more

than what is requested above

Bearing Lubrication Oil Lubrication

Standard pumps have bearings OIL lubricated from the factory to lower bearing temperature and

wear. There is a dipstick to check for correct oil levels. Use a good grade of 10W30 weight motor

oil. There is also a plug on the side of the bearing frame. When adding oil, remove this plug.

When oil runs out of the plug hole, the oil is at the proper level. Replace the plug. Do not overfill

the oil. High levels may cause churning and overheating of the bearings. Oil should be changed

every 90 days or 1000 hours.

Grease Lubrication

If the pump is mounted in a vertical position or in another position which oil lubrication is not suitable,

the bearing caps have been drilled and tapped for grease fittings. Grease lubrication is suitable

for speeds up to 2400 RPM. However, grease normally runs hotter than oil and is more likely to con-

tain contaminates which can damage the bearings. Recommended bearing greases are Exxon

Unirex N2, Chevron SRI-2, Texaco Premium RB, Shell Dolium-R, American Oil Company Rycon

Premium Grease and Mobilux EP Multi-Service Grease. Greases available in tubes are the best.

Five shots with a standard hand operated grease gun of the above greases or equivalents in

each bearing monthly is sufficient for twenty-four hour per day operation.

Packing Lubrication Grease Lubrication

The stuffing box may be re-lubricated with grease as often as necessary to prevent the packing

from overheating. It should be lubricated at least once a day. It is best to install a spring loaded

grease cup to automatically lubricate the packing. As you fill the grease cup a spring is compressed

and a stem rises. As the grease is used the spring forces new grease to the packing and the

stem lowers. When the stem is low the cup needs refilling. Grease should be pumped into the

box while turning the shaft until it comes out around the packing gland (approximately 20 shots).

If the packing leakage is excessive, a thick water pump grease should be used rather than the

general purpose grease. In most cases general purpose grease is acceptable.

Water Lubrication