PREVENTATIVE MAINTENANCE
Performing a few preventative maintenance procedures will
extend the life of your pump and reduce the overall cost of
ownership.
A. Lubrication
- Grease all grease fittings after every 500
hours of operation. If service is severe, grease more often.
Do it gently with a hand gun until the grease exiting the lip
seal or relief plug is similar in consistency and color to the
new grease.
Use a NLGI #2 grease for normal applications. See
ESB-515
at the end of the
Appendix
for Viking standard
grease types to check compatibility. For hot or cold
applications, use appropriate grease.
B. Packing Adjustment
- Occasional packing adjustment
may be required to keep leakage to a slight weep. If
impossible to reduce leakage by gentle tightening, replace
packing or use different type.
Refer to Technical Service
Manual on particular model series for details on repacking.
C. End Clearance Adjustment
- After long service, the
running clearance between the end of the rotor teeth
and the head may have increased through wear. This
wear may cause a loss of capacity or pressure. Resetting
end clearance will normally improve pump performance.
Refer to TSM on particular model series for procedure on
adjusting end clearance for pump involved.
D. Examine Internal Parts
- Periodically remove the head,
examine idler and bushing and head and pin for wear.
Replacing a relatively inexpensive idler bushing and idler
pin after only moderate wear will eliminate the need to
replace more expensive parts at a later date.
Refer to
TSM on particular model series for procedure in removing
head of the pump.
Be sure idler does not slide off the idler
pin as the head is removed. If it does slide off the idler can
cause personal injury or damage the part.
E. Cleaning the Pump
- A clean pump is easier to inspect,
lubricate, adjust, and runs cooler.
F. Storage
- If pump is to be stored or not used for six
months or more, pump must be drained, and a light coat
of non-detergent SAE 30 weight oil must be applied to all
internal pump parts. Lubricate fittings and apply grease
to pump shaft extension. Viking suggests rotating pump
shaft by hand one complete revolution every 30 days to
circulate the oil. Retighten all gasketed joints before using
the pump.
DO’S & DON’TS
Do’s and Don’ts for installation, operation, and maintenance
of Viking pumps to assure safe, long, trouble-free operation.
INSTALLATION
1. DO
install pump as close to supply tank as possible.
2. DO
leave working space around the pumping unit.
3. DO
use large, short, and straight suction piping.
4. DO
install a strainer in the suction line.
5. DO
double check alignment after the unit is mounted and
piping is hooked up.
6. DO
provide a pressure relief valve for the discharge side
of the pump.
7. DO
cut out the center of gaskets used as port covers on
flanged port pumps.
8. DO
record pump model number and serial number and file
for future reference.
OPERATION
1. DON’T
run pump at speeds faster than shown in the
catalog for your model.
2. DON’T
require pump to develop pressures higher than
those shown in the catalog for your model.
3. DON’T
operate pumps at temperatures above or below
limits shown in the catalog for your pump.
4. DON’T
operate pumps without all guards being in place.
5. DON’T
operate pump without a relief valve on the pump or
in the discharge piping. Be sure valve is mounted and set
correctly.
6. DON’T
exceed catalog limits for temperature and
pressures of fluids in jacketed areas of pump.
7. DON’T
use the pump in a system which includes a steam,
air, or vapor blow or purge
without
provision for over-
speed shutdown, in case the pump starts to act as a
turbine and over-speeds the drive.
8. DON’T
operate the pump with all of the liquid bypassing
through a pump mounted internal type relief valve, or
without any flow of liquid going through the pump for more
than a couple of minutes. Operation under either of these
conditions may result in a heat build-up in the pump, which
could cause hazardous conditions or happenings.
TSM 1741 | Issue B | Page 18 of 20
© 2019 Viking Pump, Inc. • Cedar Falls, IA
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
© Viking Pump, Inc.
