User Manual

SECTION TSM 443 ISSUE C PAGE 3 OF 8
ROTATION: Viking pumps operate equally well in a clockwise
or counterclockwise rotation. When rotation changes, the
suction and discharge is reversed.
PRESSURE RELIEF VALVES:
1. Viking pumps are positive placement pumps and must be
provided with some sort of pressure protection. Series
200-G and 260-G pumps are only available with a return
to tank relief valve.
2. If pump rotation is to be reversed during operation,
pressure protection must be provided on both sides of
pump.
3. Relief valve adjusting screw cap must always point
towards suction side of pump. If pump rotation is
reversed, remove pressure relief valve and either turn
end for end or change position with the cover plate.
4. Pressure relief valves cannot be used to control pump
flow or regulate discharge pressure.
For additional information on pressure relief valves, Refer
to Technical Service Manual TSM000 and Engineering
Service Bulletin ESB-31.
SPECIAL MECHANICAL SEALS:
Extra care should be taken in repair of these pumps. Be sure
to read and follow all special instructions supplied with your
pump.
MAINTENANCE
1. LUBRICATION: Periodic external lubrication should be
applied slowly with a handgun at all lubrication fittings
provided. A good quality of general-purpose grease is
satisfactory in the majority of cases; however, applications
involving low temperatures may require other types of
lubricants. Suggested frequency of lubrication is once
every 500 hours of operation with multi-purpose grease,
NLGI # 2. Do not over-grease. Applications involving
low temperatures will require other types of lubrication.
Refer to Engineering Service Bulleting ESB-515.
Consult factory with specific lubrication questions.
2. END CLEARANCE ADJUSTMENT: After long term
operation it is sometimes possible to improve the
performance of the pump, without major repair, through
adjustment of end clearance of the pump. Refer to
instructions under assembly of the pump for information
regarding this procedure.
DISASSEMBLY
DANGER !
Before disassembling a pump or
removing it from the line, be sure the
pump and system are free of LP-Gas. As
an extra precaution, protective clothing
for face and body should be used when
doing this work.
3. CLEANING THE PUMP: It is good practice to keep the
pump as clean as possible. This will facilitate inspection,
adjustment and repair work and help prevent omission
of lubrication to fittings covered or hidden with dirt.
STORAGE: If the pump is to be stored or not used for any
appreciable length of time it should be drained and a light
coat of lubricating and preservative oil should be applied to
the internal parts. Lubricate all fittings.
SUGGESTED REPAIR TOOLS: The following tools must
be available to properly repair Series 200 and 260 pumps.
These tools are in addition to standard mechanics’ tools such
as open end wrenches, pliers, screwdrivers etc. Most of the
items can be obtained from an industrial supply house.
1. Soft Headed Hammer
2. Allen Wrenches
(some mechanical seals and set collars)
3. Mechanical seal installation sleeve
4. Bearing locknut spanner wrench
(Source: Grainger # 1APC4)
5. Spanner wrench, adjustable pin type for use on double
end caps (Source: Grainger # 1APC1)
6. Brass Bar
7. Arbor Press