1
Form No. 256827 Rev. 11/08
SERVICE MANUAL
PVR50 Flanged Series Pump
Installation, Startup, Operating Instructions, Parts Pages, Repair Procedures
“L” Design Series
Basic Pump
Pump Size
Pressure
Rotation & Mounting
Seal Type
Mechanical Options
Control Options
Integral Operator
Design Letter
PVR50 - _ _ - _ - _ - 5 _ _ _ - L
Figure 1
Figure 2
PVR50-
RATINGS
S.U.S 200-250 @ 100°F./C.S.T. 21-30 @ 49°C.
r
rpm
v
IN
3
/r
p
psi
p
bar
m
l
/r
Model Code
50B15-RF-0-521-L
CAUTION
-
Before performing any service
operation on any pump, be sure that all
pressure has been relieved from BOTH
SIDES of the system.
CAUTION
-
Before performing any service
operation on any pump, disconnect or lock
off power supply.
CAUTION -
Before starting pump, be sure
that any resulting machine function will not
endanger persons or equipment.
PRODUCT IDENTIFICATION
Each pump has an Ordering Code stamped on its
nameplate. See Figure 1 for the location of the
Ordering Code.
This service manual applies to products with Ordering
Codes like the sample in Figure 2.
INSTALLATION
PUMP DRIVE AND MOUNTING
When mounting the pump and motor, care must be
taken to align the pump and motor shafts within .003
T.I.R. Direct inline through a jaw type/flexible web
coupling is recommended for all Continental pumps.
Tire-type flexing elements and chain-type drives are
not recommended. With belt drives, please consult
factory.
To avoid axial and radial end loading of the pump
shaft, do not couple the pump and motor shafts
rigidly. Allow freedom at the coupling for the two
shafts to ride independently.
To prevent end loading, the space between the pump
and motor shaft ends should be 3/4 inch (19.1 mm)
for PVR50 pumps, or as the coupling manufacturer
specifies.
PIPING AND RESERVOIR
The pump should be mounted with a minimum
number of elbows or fittings. The pump suction
should be at least two (2) inch (50.8 mm) tube/pipe
for PVR50 pumps and 2-1/2 inch (63.5 mm) tube/pipe
for PVR50-70B pumps.
