Viking Pump TSM270.2: RL 16 and 25 High Pressure - Manual (Page 4)

SECTION TSM 270.2 ISSUE A PAGE 4 OF 12 SECTION TSM 270.2 ISSUE A PAGE 5 OF 12
ROTATION
CAUTION:
Pumps are supplied without gear case oil. Be sure
to add the proper amount and type of lubricant be-
fore operating the pump. Do not overfill!
GEAR CASE - Use a grade of gear lube oil with EP (Extreme
Pressure) additive for the ambient temperature range.
EP150 0 - 32° F
EP220 32 – 85° F
EP320 above 85° F
Refer to Figure 3. Remove the pipe plug from the fill hole
and add 15 oz. of the specified lubricant. Fill to the bottom
of the fill plug hole.
After 100 hours of operation, drain and refill with new
lubricant.
Check the oil level regularly and add lubricant as necessary.
Drain and refill with new lubricant every 12 months or 3000
hours of operation, whichever comes first.
External lubrication must be applied slowly with a manual
grease gun to both lubrication fittings every 500 hours of
operation with multi-purpose grease, NLGI # 2. Do not over-
grease. Applications involving very high or low temperatures
will require other types of lubrication. Refer to ESB 515.
Consult the factory with specific lubrication questions.
Pumps supplied from the factory are packed with heavy-
duty grease. Upon disassembling the bearing housing, the
bearings should be cleaned and repacked with heavy-duty
multi-purpose grease.
TAPERED ROLLER BEARINGS
CLEANING THE PUMP
Keep the pump as clean as possible to facilitate inspection
and repair work.
STORAGE
If a new pump is to be stored or not used for six months or
more, add 5 oz. of non-detergent SAE 30 weight oil in the
timing gear box. Viking suggests rotating the pump shaft
by hand one complete revolution every 30 days to circulate
the oil.
SUGGESTED REPAIR TOOLS
The following tools must be available to properly repair
Viking Industrial Rotary Lobe pumps. These tools are in
addition to standard mechanics’ tools such as open end
wrenches, pliers, screw drivers, etc. Most items can be
obtained from an industrial supply house.
1. Soft headed hammer
2. Allen wrenches
3. Depth micrometer (0-1” Range)
4. Bearing Locknut Spanner Wrench (Adjustable
Face, Pin Style - 3/16 Dia Pin)
5. Adjustable Hook Spanner Wrench, for 1-1/4” to 3”
diameter.
6. Jackscrews - 3/8 UNC by 3” length capscrew
threaded the entire length (3 Required)
7. Brass bar or wood block
8. Arbor Press
PRESSURE RELIEF VALVES
Viking Industrial Rotary Lobe pumps are positive
displacement pumps and must be provided with some sort
of pressure protection. An inline pressure relief valve, a
torque limiting device or a rupture disk must be provided in
the pumping system.
BUSHINGS
The bushings used in this pump are lubricated with the
product and do not require any external source of lubrication
during operation.
MAINTENANCE
LUBRICATION:
SPECIAL INFORMATION
PACKING ADJUSTMENT
New packed pumps require initial packing adjustment
to control leakage as the packing “runs in”. Make initial
adjustments carefully and do not over-tighten the packing
gland. After initial adjustment, inspection will reveal the need
for packing gland adjustment or packing replacement. Refer
to instructions under “Packing Replacement, Installation”,
page 6, regarding repacking pump.
INLET FOR
CLOCKWISE
ROTATION
(STD)
INLET FOR
COUNTER
CLOCKWISE
ROTATION
Viking Industrial Rotary Lobe pumps may be operated in
either a clockwise or counterclockwise rotation (clockwise
rotation is standard). Rotation is determined by viewing the
pump from the shaft end as shown in Figure 3. The circula-
tion line provided vents the seal chamber to the inlet port.
When reversing the rotation on the pump, the seal chamber
will experience an increase in pressure, which may affect
seal performance. Refer to seal manufacture’s specifications
or contact the factory for recommended pressure limits.
If rotation is reversed, this line should be switched to the op-
posite port.
FIGURE 3