Dragon Wholesaling 178 Series Instructies voor installatie, bediening en onderhoud - Pagina 8
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Pagina afdrukken5. 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
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