PP OH75 Installation guide

Price® Pump Co. Model OH75 Page 1of 8 I&O IN147-5d 10/18/99
21775 8th Street East wP.O. Box Q wSonoma, CA 95476-0329 w(707) 938-8441 wFax [phone]
IN-147-5
®
PRICE®PUMP
Installation,
Operating, and
Maintenance
Manual
Type OH75
Caution:
Before installing, repairing
or performing maintenance
on this pump, read these
instructions completely.
Installation
Electrical
WARNING!
Ground motor before
connecting to electrical
power supply! Failure to
ground motor can cause
severe or fatal electrical
shock hazard!
Do not ground to gas
supply line!
Disconnect power to motor
before working on motor
or pump!
Match voltage to
nameplate voltage on
motor. Incorrect voltage
can cause fire or seriously
damage motor, voiding
warranty.
Close Coupled -
Motor Pumps
These pumps require no special
care in mounting, although it is
suggested that they be firmly
bolted to a level surface.
Adequate air movement over
motor will help prevent overloads.
Power Frame Mounted
Pumps
These pumps must be mounted on
a rigid steel base that will not
warp or flex. Each pump must be
mounted such that the pump
shaft centerline is on center
with the driver shaft center-line.
Pads and/or shims will be
required on either pump, driver or
both. The two shafts should not
touch each other and the distance
between them depends on the
coupling used to connect them.
Misalignment will cause
bearing failure and void
warranty. Pumps are rough
aligned at the factory but must
be realigned after shipment and
installation. Pulley driven pumps
must have pulleys in line and
good belt tightness practices
followed.
I & O Manual

Price® Pump Co. Model OH75 Page 2of 8 I&O IN147-5d 10/18/99
21775 8th Street East wP.O. Box Q wSonoma, CA 95476-0329 w(707) 938-8441 wFax [phone]
Direction of Rotation
Note: Motor shaft rotation is
viewed from the suction end of
pump. A rotational arrow is
shown on the front of the pump
volute casing. Incorrect rotation
can cause pump damage, failure
or reduced performance, voiding
warranty. It is best to check
rotation by momentarily
energizing or jogging the motor
prior to filling pump with liquid.
Warning! Do not operate
pump without liquid for more
than a few seconds, as damage
will result to mechanical seal.
PLUMBING
All piping should be supported
independently of the pump.
Piping should not exert any stress
on the pump connections.
1. Suction Piping-Horizontal
Pumps.
Suction line must provide
adequate suction pressure and
smooth liquid flow for proper
pump operation. Air entrapment
in the suction line because of
leaks or improper design may
cause the pump to lose prime and
fail. This pump is not self-
priming, therefore the suction
must be flooded at start up. Also,
the suction line must provide
sufficient pressure and smooth
flow to pump inlet to prevent
pump cavitation. A length of
straight pipe a minimum of 5
times the pump inlet diameter and
preferably 10 times
the diameter should be installed in
the suction line where it enters the
pump. Elbows, fittings or valves
installed close to the suction can
disrupt liquid flow and cause
malfunction. Suction lines must
be at least the same size as the
pump inlet or larger if possible.
Price Pump Company
recommends against using foot
valves in the suction line to
maintain liquid in the pump when
it’s not operating. If foot valves
are used due to suction lift
conditions they must be properly
maintained to avoid leaks
resulting from wear or fouling.
Suction piping must be designed
to prevent air from being trapped
in high spots in the piping. This
condition may cause the pump to
vapor lock as the air bubble
moves into the pump.
2. Discharge Piping.
For flow and discharge head
control it is advisable to install a
valve (globe, ball, or other
adjustable and non-leak type) in
the discharge line close to the
pump. The valve may be closed
during system repairs to prevent
backflow. By installing a check
valve in the discharge line
backflow can also be prevented
during maintenance or during
periods of pump stoppage.
OPERATION
Priming. All centrifugal pumps
must be filled with liquid prior to
start up. For the OH pump
illustrated in this manual
completely fill the volute and
suction lines prior to operation. It
is suggested that during initial
start up the discharge valve be
closed and then opened as the
motor develops full rpm’s. If
pump does not build up pressure
as motor speed increases, shut
down and reprime pump. Make
sure that liquid flow into pump is
not restricted (see
“Troubleshooting”).
Note: A centrifugal pump’s flow
and head (pressure) will vary with
the amount of resistance (friction
and flow restrictions) in the
discharge line. As a valve on the
discharge line opens the flow and
motor amp draw will increase and
head will drop. As a valve on the
discharge is closed the flow and
amp draw will decrease and the
head will increase. If resistance in
the discharge line is not sufficient
the pump will operate at a
condition of maximum (or
“choked”) flow, also sometimes
called “end of performance
curve.” Maximum horsepower is
required to operate at this point
and motor overload may result. If
excessive amp draw and motor
overload is recurring, reduce the
system flow by installing a valve
on the discharge line and
restricting flow. Alternatively,
reduce pump head by trimming
impeller to a smaller diameter.
Consult local Price Pump dealer
for assistance.

Price® Pump Co. Model OH75 Page 3of 8 I&O IN147-5d 10/18/99
21775 8th Street East wP.O. Box Q wSonoma, CA 95476-0329 w(707) 938-8441 wFax [phone]
CAUTION
Disconnect power to pump
before servicing to avoid
dangerous or fatal electrical
shock hazards.
If pump has been used to pump
hazardous materials be certain
that all materials have been
removed prior to working on
the pump.
Inverting pump with liquid in it
could cause liquid to get into
motor bearings and cause
damage. Before disassembling
be certain all liquid is removed
from the pump.
TROUBLESHOOTING
1. Pump fails to build pressure:
Check for:
a. Pump not primed.
b. Incorrect rotation.
c. Driver speed too low.
d. Suction line restricted.
e. Driver failure.
f. Plugged or damaged
impeller.
g. Pump or impeller
undersized.
h. Pump cavitation.
i. Impeller rubbing volute.
2. Pump fails to provide enough
flow.
Check for:
a. System resistance too high.
b. Pump undersized.
c. Pump not primed.
d. Driver speed too low.
e. Poor suction conditions
f. Impeller rubbing volute due
to improper installation.
g. Pump cavitation.
h. Plugged or damaged
impeller.
3. Excessive noise or vibration
during operation.
Check for:
a. Motor bearing failing.
b. Pump cavitating.
c. Impeller rubbing volute.
4. Leaking mechanical seal.
Check for:
a. Improper assembly.
b. Worn or cracked seal faces.
c. Abrasive material build up
around seal.
d. Liquid flashing at seal faces
(temp too high).
e. Seal pressure rating too low
for the service.
f. Chemical attack of seal parts.
g. Seal operated dry or with a
liquid having poor
lubricating properties.
5. Pump gradually loses
pressure and head.
Check for:
a. Increasing temperature
causing cavitation or liquid
vaporization.
b. Driver failure.
c. Suction lift too high.
d. Air entering suction line.
6. Motor/pump overheating.
Check for:
a. Excessive flow and amp
draw. (Throttle discharge)
b. Low voltage or frequency.
c. Flow too low with resulting
heat rise.
d. Bearing failure.
e. System temperature too high.

Price® Pump Co. Model OH75 Page 4of 8 I&O IN147-5d 10/18/99
21775 8th Street East wP.O. Box Q wSonoma, CA 95476-0329 w(707) 938-8441 wFax [phone]
TYPE OH75 MAINTENANCE AND REPAIR I&O IN 147-5
Before attempting any repairs under warranty, contact Distributor to obtain factory authorization.
Repairs carried out without authorization may void warranty. Many causes of pump system failure are
due to improper system design. Refer to the Trouble Shooting List in this manual before carrying out
pump inspection.
DISASSEMBLY
1. Disconnect power source
from motor.
2. Disconnect electrical
connections, tagging wires
carefully to preserve
correct rotation. Loosen
pump base.
3. Remove pump and motor
assembly to repair area.
Observe position of all
parts prior to disassembly.
4. Remove 8 volute bolts and
remove volute from pump.
5. Remove split collar from
impeller sleeve. Loosen
two Allen cap screws and
setscrew in split collar.
Slide impeller off of the
motor shaft.
6. Remove seal head from
the shaft sleeve. Remove
seal by sliding it off of the
shaft sleeve.
7. Remove the four motor
bolts and remove bracket
from motor.
8. Remove seal seat from
bracket. Use wooden or
plastic dowel to tap the
seat from the bracket.
REASSEMBLY
1. Place the bracket on a firm
surface with the seat cavity
(pump end) up.
2. Clean seal cavity of the
bracket thoroughly.
3. Place the seat in the seal
cavity with the polished
face up toward the pump
end (lubricate elastomer
with water to ease seat
installation). Evenly push
seat into seat cavity with
fingers, then gently tap
seat into place with a
wooden dowel or plastic
rod (1-1/2” outside
diameter).
4. Install seal head assembly:
a. Thorough clean
impeller sleeve. Assure
that the shaft is not
grooved and that there
is no evidence of pitting
or fretting under the
seal head.
b. Install rotary seal head
onto impeller sleeve
with the carbon facing
away from the impeller.
Using a twisting motion
slide seal head all the

Price® Pump Co. Model OH75 Page 5of 8 I&O IN147-5d 10/18/99
21775 8th Street East wP.O. Box Q wSonoma, CA 95476-0329 w(707) 938-8441 wFax [phone]
way up to the hub of the
impeller.
5. Place the sleeve of the
impeller through the
ceramic seat until carbon
touches ceramic. Place the
split collar around the end
of the sleeve so that it is
flush with the end of the
sleeve. Align the center
setscrew until it enters the
impeller sleeve hole. Do
not tighten. Snug the
capscrews in the split
collar at this time.
6. Install volute.
a. Lubricate the volute O-
ring with water only.
Warning: Organic
oils will attack CPVC
and cause stress
cracks.
b. Place the O-ring around
the register fit on the
bracket. Place the
volute on the bracket
over the O-ring and
squeeze together with
two hands.
Note: The discharge must
be aligned with the bracket
so that the discharge is
pointing up in the same
direction as the seal flush
boss on the pump bracket.
The volute will only fit this
one way. To rotate volute
discharge position you must
rotate the bracket on the
motor.
c. Install volute bolts,
washers and nuts.
Tighten all eight bolts
evenly to
8-10 ft./lbs.
Installing Pump End onto
Motor
1. Thoroughly clean motor
shaft. Assure that the shaft
and keyway have no burrs.
Polish the shaft with extra
fine emery cloth and clean
the keyway.
2. With motor resting on flat
surface, shaft end up,
carefully place assembled
pump end onto motor
shaft. Be sure to align key
in impeller sleeve with
keyway in motor shaft.
3. Install motor bolts and
base (if applicable).
Tighten motor bolts
evenly.
4. Using a screwdriver or
3/4” diameter rod inserted
through the suction of the
pump, gently push the
impeller down onto the
motor shaft until it
bottoms out on the shaft.
Align center cup pt.
setscrew in split collar
with hole in impeller
sleeve. It must clear all
sides of locating hole to
ensure full contact with
motor shaft. Tighten two
Allen capscrews in the
split collar to 8-10 ft/lbs.
The center cup pt. must
remain loose until the two
Allen capscrews are tight.
Tighten center cup pt.
setscrew to 4-5 fl/lb.
5. After assembly of pump
end to motor, the unit must
be checked to insure the
shaft and impeller rotate
freely. If not, loosen
setscrews and repeat
step 7.
6. Return pump to
installation, reconnect
electric connections.
7. Start pump momentarily to
observe shaft rotation. If
rotation corresponds to the
rotation arrow on the
pump, it may be put into
service. If rotation is
incorrect, switch any two
leads on 3-phase motors to
change rotation. Check
wiring diagram of motor
for single phase rotation
correction.
8. Remove top pipe plug (if
applicable) from the front
of volute and prime pump
thoroughly, making sure
all air is purged. Turn
shaft one revolution and
then refill. Replace the
pipe plug.
9. Start pump allowing
adequate time to purge all
air from system. Observe
any gauges, flow meters,
etc., to see if pump
performs properly.

Price® Pump Co. Model OH75 Page 6of 8 I&O IN147-5d 10/18/99
21775 8th Street East wP.O. Box Q wSonoma, CA 95476-0329 w(707) 938-8441 wFax [phone]
CPVC All Models PVDF
A. Volute 8010CP 8010PF
B. Pipe Plug (2 rqd) 8012PF
C. Impeller 8020CP Imp. Dia. 8020PF Imp. Dia.
D. ‘O’Ring (choice of P/N)
Viton® (Std) 8073VN (Std) 8075VN
EPR 8073EP 8075EP
Buna 8073BN
E. Bracket 8014CP 8014PF
F. Volute Bolts (7 rqd) 3148
G. Volute Bolts - Long (1 rqd) 3084
H. Washer (20 rqd) 3081
J. Nut (8 rqd) 3082
K. Motor Bolt - Long (2 rqd) 0592
L. Motor Bolt - Short (2 rqd) 0587
M. Base 8016
N. Collar, Split 8018
R. Seal with Seat
T.36 Viton® 1” (std) 8302-211
T.36 EPR 1” P/N 8302-511 Contact Factory
T. Setscrew 0570
TYPE OH75 PARTS LIST
Effective: November 17, 1997
CP = CPVC
PF = PVDF

Price® Pump Co. Model OH75 Page 7of 8 I&O IN147-5d 10/18/99
21775 8th Street East wP.O. Box Q wSonoma, CA 95476-0329 w(707) 938-8441 wFax [phone]
OH75 OUTLINE DRAWING
Effective: JANUARY 1, 1993

Price® Pump Co. Model OH75 Page 8of 8 I&O IN147-5d 10/18/99
21775 8th Street East wP.O. Box Q wSonoma, CA 95476-0329 w(707) 938-8441 wFax [phone]
GENERAL TERMS OF SALE FOR PRODUCTS Effective: January 1, 1993
1. GENERAL
A. Seller's price is based on these sales terms and (i) this
document together with any additional writings signed by
Seller shall represent the final, complete and exclusive
statement of the agreement between the parties and may not
be modified, supplemented, explained or waived by parol
evidence, Buyer's purchase order, a course of dealing,
Seller's performance or delivery, or in any other way except
in writing signed by an authorized representative of Seller,
and (ii) these terms are intended to cover all activity of
Seller and Buyer hereunder, including sales and use of
products, parts and work and all related matters (references
to products include parts and references to work include
construction, installation and start-up). Any reference by
Seller to Buyer's specifications and similar requirements are
only to describe the products and work covered hereby and
no warranties or other terms therein shall have any force of
effect. Catalogs, circulars and similar pamphlets of the
Seller are issued for general information purposes only and
shall not be deemed to modify the provisions hereof.
B. The agreement formed hereby and the language herein
shall be construed and enforced under the Uniform
Commercial Code as in effect in the State of California on
the date hereof.
2. TAXES
Any sales, use or other similar type taxes imposed on this
sale or on this transaction are not included in the price.
Such taxes shall be billed separately to the Buyer. Seller
will accept a valid exemption certificate from the Buyer if
applicable; however, if an exemption certificate previously
accepted is not recognized by the governmental taxing
authority involved and the Seller is required to pay the tax
covered by such exemption certificate. Buyer agrees to
promptly reimburse Seller for the taxes paid.
3. PERFORMANCE, INSPECTION AND
ACCEPTANCE
A. Unless Seller specifically assumes installation,
construction or start-up responsibility, all products shall be
finally inspected and accepted within thirty (30) days after
arrival at point of delivery. Products not covered by the
foregoing and all work shall be finally inspected and
accepted with thirty (30) days after completion of the
applicable work by Seller. All claims whatsoever by Buyer
(including claims for shortages) excepting only those
provided for under the WARRANTY AND LIMITATION
OF LIABILITY and PATENTS Clauses hereof must be
asserted in writing by Buyer within said thirty (30) day
period or they are waived. If this contract involves partial
performance, all such claims must be asserted within said
thirty (30) day period for each partial performance. There
shall be no revocation of acceptance. Rejection may be only
for defects substantially impairing the value of products or
work and Buyer's remedy for lesser defects shall be those
provided for under the WARRANTY AND LIMITATION
OF LIABILITY Clause.
B. Seller shall not be responsible for non-performance or
for delays in performance occasioned by any causes beyond
Seller's reasonable control, including, but not limited to,
labor difficulties, delays of vendors or carriers, fires,
governmental actions, or shortages of material, components,
labor, or manufacturing facilities. Any delays so occasioned
shall affect a corresponding extension of Seller's
performance dates which are, in any event, understood to be
approximate. In no event shall Buyer be entitled to
incidental or consequential damages for late performance or
for a failure to perform. Seller reserves the right to make
partial shipments and to ship products, parts or work which
may be completed prior to the scheduled performance date.
C. In the event that Seller has agreed to mount motors,
turbines, gears, or other products which are not
manufactured by Seller and which are not an integral part of
Seller's manufactured product, and a delay in the delivery of
such products to Seller occurs that will cause a delay in
Seller's performance date, Seller reserves the right to ship its
product upon completion of manufacture and to refund an
equitable portion of the amount originally included in the
purchase price for mounting without incurring liability for
non-performance.
D. Seller reserves to itself the right to change its
specifications, drawings and standards if such changes will
not impair the performance of its products, and parts, and
further that such products, and parts, will meet any of
Buyer's specifications and other specific product
requirements which are a part of this agreement.
E. The manufacture and inspection of products and parts
shall be to Seller's Engineering and Quality Assurance
standards plus such other inspections, tests of
documentation as are specifically agreed to by Seller.
Requirements for any additional inspection, tests,
documentation, or Buyer witness of manufacture, test,
and/or inspection shall be subject to additional charges.
4. TITLE AND RISK OF LOSS
Title and risk of loss shall pass to buyer upon delivery of
products at the designated Ex Works place (Incoterms
1990) unless other wise agreed by the parties. See
Reverse
5. EROSION AND CORROSION
It is specifically understood that products and parts sold
hereunder are not warranted for operation with erosive or
corrosive fluids. No product or part shall be deemed to be
defective by reason of failure to resist erosive or corrosive
action of any fluid and Buyer shall have no claim
whatsoever against Seller therefore.
6. WARRANTY AND LIMITATION OF LIABILITY.
A. Seller warrants only that its product and parts, when
shipped, and its work (including installation, construction
and start-up), when performed will meet all applicable
specifications and other specific product and work
requirements (including those of performance), if any, of
this agreement, and will be free from defects in materials
and workmanship. With respect to products, parts and
work not manufactured or performed by Seller, Seller's only
obligation shall be to assign to Buyer, to the extent possible,
whatever warranty Seller requires from the manufacturer.
All claims for defective products or parts under this
warranty must be made in writing immediately upon
discovery and, in any event, within one (1) year after initial
start-up or eighteen (18) months after shipment, whichever
first occurs, and all claims for defective work must be made
in writing immediately upon discovery and in any event,
within one (1) year of completion thereof by Seller.
Defective items must be held for Seller's inspection and
returned to the original f.o.b. point upon request. THE
FOREGOING IS EXPRESSLY IN LIEU OF ALL OTHER
WARRANTIES WHATSOEVER, EXPRESS, IMPLIED
AND STATUTORY, INCLUDING WITHOUT
LIMITATION, THE IMPLIED, WARRANTIES OF
MERCHANTABILITY AND FITNESS.
B. Upon Buyer's submission of a claim as provided above
and its substantiation, Seller shall at its option either (i)
repair or replace its product, part or work at the original
place of delivery, or (ii) refund an equitable portion of the
purchase price.
C. THE FOREGOING IS SELLER'S ONLY
OBLIGATION AND BUYER'S EXCLUSIVE REMEDY
FOR BREACH OF WARRANTY AND, EXCEPT FOR
GROSS NEGLIGENCE, WILLFUL MISCONDUCT,
AND REMEDIES PERMITTED UNDER THE
PERFORMANCE, INSPECTION AND ACCEPTANCE
AND THE PATENTS CLAUSES HEREOF, THE
FOREGOING IS BUYER EXCLUSIVE REMEDY
AGAINST SELLER FOR ALL CLAIMS ARISING
HEREUNDER OR RELATING HERETO WHETHER
SUCH CLAIMS ARE BASED ON BREACH OF
CONTRACT. TORT (INCLUDING NEGLIGENCE) OR
OTHER THEORIES. BUYER'S FAILURE TO SUBMIT
A CLAIM AS PROVIDED ABOVE SHALL
SPECIFICALLY WAIVE ALL CLAIMS FOR DAMAGES
OR OTHER RELIEF, INCLUDING BUT NOT LIMITED
TO CLAIMS BASED ON LATENT DEFECTS. IN NO
EVENT SHALL BUYER BE ENTITLED TO INDIRECT,
SPECIAL, INCIDENTAL OR CONSEQUENTIAL
DAMAGES, NOR FOR DAMAGES FOR LOSS OF USE,
LOST PROFITS OR REVENUE, INTEREST, LOST
GOODWILL, WORK OR PRODUCTION STOPPAGE,
IMPAIRMENT OF OTHER GOODS, INCREASED
EXPENSES OF OPERATION, OR THE COST OF
PURCHASING REPLACEMENT POWER OR OTHER
SERVICES BECAUSE OF SERVICE INTERRUPTIONS.
FURTHERMORE, IN NO EVENT SHALL SELLER'S
TOTAL LIABILITY FOR DAMAGES OF BUYER
EXCEED THE PURCHASE PRICE OF THE PRODUCTS
OR PARTS MANUFACTURED BY SELLER AND
UPON WHICH SUCH LIABILITY IS BASED. ANY
ACTION ARISING HERE-UNDER OR RELATED
HERETO, WHETHER BASED ON BREACH OF
CONTRACT, TORT (INCLUDING NEGLIGENCE) OR
OTHER THEORIES, MUST BE COMMENCED WITHIN
ONE (1) YEAR AFTER THE CAUSE OF ACTION
ACCRUES OR IT SHALL BE BARRED.
7. PATENTS
Seller agrees to assume the defense of any suit for
infringement of any patents brought against Buyer to the
extent of such suit charges infringement of an apparatus or
product claim by Seller's product in an of itself, provided (i)
said product is built entirely to Seller's design, (ii) Buyer
notifies Seller in writing of the filing of such suit within ten
(10) days after the service of process thereof, and (iii)
Seller is given complete control of the defense of such suit,
including the right to defend, settle and make changes in the
product for the purpose of avoiding infringement of any
process or method claims, unless infringement of such
claims is the result of following specific instruction
furnished by Seller.
8. EXTENT OF SUPPLY
Only products and listed in Seller's proposal are included in
this agreement. It must not be assumed that Seller has
included anything beyond same.
9. MANUFACTURING SOURCES
To maintain delivery schedules, Seller reserves the right to
have all or any part of the Buyer's order manufactured at
any of Seller's or its licensee's plants on a world-wide basis.
10. TERMS OF PAYMENT
Refer to following page for Terms of Payment.
(Terms3-/93Bob )