Wright Flow Technologies TR-C Series User manual

Installation, Operation, and
Maintenance Manual
TR-C Series
Centrifugal Pump

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
2
TR-C-
M02
Thankyou for purchasinga Wright Flow product!
This manual contains installation, operation, cleaning and maintenance
instructions for the TR-C, TR-C+ and IC+ series.
It also includes a part list, a troubleshooting chart to assist in determining pump malfunction,
and recommendations forthe maintenance and operation of the equipment.
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
Wright Flow Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
Safety. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
importantsafetyinformation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
Installation guidelines .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
How to installthe piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
Assemblypreliminaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
Exploded Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
Part List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
Beginning theassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
Leg bracketassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
Adapterassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
Spacing of the impeller and stub shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
Assembling and installing the mechanical seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12
Kit plus assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17
Industrial T21 seal assembly -IC+ series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18
General assembly inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
Impeller retention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19
Casing assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20
Before turning on the pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20
Common Problems .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21
CONTENTS

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
3
ABOUT THIS MANUAL
Toensurethebestperformanceof yourpump,pleasereadthismanual before installingandoperating
it. You will find useful information including instructions for pump disassembly and reassembly; as
required forrecommended pump maintenance.
For any questions related to the installation, operation, or maintenance of this pump, please contact
your local distributor or Wright FlowTechnologies:
Wright Flow Technologies, Inc.
406 State Street
Cedar Falls, IA 50613 U.S.A.
Call: USA [phone]/ EU+44 (0) 1323 509211
Fax: USA [phone]/ EU [phone]
[e-mail]/ [e-mail]
The information in this manual may change without notice. We recommend visiting our website for
any updates.
WrightFlow TechnologiesWarranty
Wright Flow Technologies warrants all products manufactured by it to be free from defects in
workmanship or material for a period of one (1) year fromdate of startup, provided that in no event
shall this warranty extend more than eighteen (18) months fromdate of shipment fromWright Flow
Technologies. If during said warranty period, any products sold by Wright Flow Technologies prove
to be defective in workmanship or material under normal use and service, and if such products are
returned to Wright Flow Technologies factory at Cedar Falls, Iowa, transportation charges prepaid,
and if theproductsarefoundbyWrightFlowTechnologiestobedefectiveinworkmanshipormaterial,
they will be replaced or repaired freeof charge,F.O.B. Cedar Falls, Iowa.
Wright Flow Technologies assumes no liability for consequential damages of any kind and the
purchaser by acceptance of delivery assumes all liability for the consequences of the use or misuse
of Wright Flow Technologies products by the purchaser, his employees or others. Wright Flow
Technologies will assume no field expense forservice or parts unless authorized by itin advance.
Equipmentand accessoriespurchasedbyWrightFlowTechnologiesfromoutsidesources,whichare
incorporated into any Wright Flow Technologies product, are warranted only to the extent of and by
the original manufacturer’s warranty or guarantee, if any.
THIS IS WRIGHT FLOW TECHNOLOGIES’S SOLE WARRANTY AND IS IN LIEU OF ALL OTHER
WARRANTIES EXPRESSED OR IMPLIED, WHICH ARE HEREBY EXCLUDED, INCLUDING IN
PARTICULAR ARE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE.
No officer or employee of IDEX Corporation or Wright Flow Technologies isauthorized to alter this
warranty.
ABOUT THIS MANUAL

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
4
TR-C-
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SAFETY
IMPORTANTSAFETYINFORMATION
Safety is very important!
DO NOT attempt to modify any Wright Flow product, the TR-C series centrifugal pumps
have been designed to be safe and reliable. Modifyingthem could create unsafe conditions
and void all warranties.
DO NOT place any Wright Flow product in an application where general product
service ratings are exceeded. If the maintenance and operation personnel do not observe
the instructions in this manual, operation could result in personal injury or machine damage.
The following DANGER,WARNING,and CAUTIONsigns and their meanings are used within
these instructions to avoid serious injury and/or possible damage to equipment.
CODE 136530001
(Rotating direction CCW)
CODE 136530002
(Guard warning)
Safety labels are placed on every pump. DO NOT remove any labeling on any Wright Flow
product. Immediately replace any label that is missing.
Indicates a potentially hazardous situation
which, if not avoided, could result in death or
serious injury.
CAUTION
WARNING
ROTATINGSHAFT
DO NOT OPERATE
WITHOUTGUARD IN PLACE
Indicates an imminently hazardous situation
which, if not avoided, will result in death or
serious injury. The word danger is used in the
most extreme cases.
DANGER
Indicates a potentially hazardous situation
which, if not avoided, could result in minor or
moderate injury. May also be used to alert
against an unsafe operating or maintenance
practice.
WARNING

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
5
DESCRIPTION
Before servicing pump, disconnect the electrical power source.
The TR-C series closed-coupled pumps are made up of two sections: power or drive section
and the liquid end or pump section.
The pump is mounted to the frame of the drive motor by means of an adapter and is coupled
to the motor shaft. The impeller mounts on the stub shaft and is retained by one of three
methods. The casing is clamped to the adapter, greatly simplifying removal and permitting
positioning of the discharge outlet through 360º. The external, balanced seal assures a long
seal life. The drive motor is mounted on a frame that has adjustable legs; providing simple
installation and leveling.
INSTALLATIONGUIDELINES
UNPACKING EQUIPMENT
Check the contents and all wrapping when unpacking your equipment. Inspect all parts for
damage that may have occurred during shipping. Report any damage to the carrier.
LOCATION AND INSTALLATION
The pump unit should be located as near as possible to the liquid source and in a position
where the suction piping can be short and direct with a minimum number of elbows and
fittings. It should also be readily accessible forinspection and cleaning.
The pump unit as received from the factory is ready forinstallation. To install it, attach a hoist
if necessary, loosen the set screws in the adjusting leg brackets, and individually adjust the
legs until the pump is leveled. Tighten the set screws.
Attach the suction and discharge piping. Be sure suction and
discharge piping is properly supported to avoid any strain on the
pump casing.
WARNING
Before servicing pump, disconnect the
electrical power source, carefully relieve
all pressure and drain all fluids from pump
and connected piping.
SAFETY

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
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INSTALLATION
HOWTO INSTALLTHEPIPING
GENERAL
This section provides some dos and don’ts of piping, which will aid in obtaining the maximum
efficiencyand service from your pump. Piping should be independently supported at both the
suction inlet and discharge outlet. Care should be taken that piping is properly aligned and
does not put any strain on the pump casing. The piping should haveas fewbends aspossible.
SUCTION PIPING
The suction piping should be short and follow a direct routewith a minimum number ofelbows
and fittings. Elbows should be located as far as possible from the suction inlet to prevent
head loss due to increased friction. Excessive friction losses in the suction line could result
in pump cavitation, causing poor performance, noise, vibration, damage to equipment, and
possible damage to the fluid.
Whenever possible the diameter of the piping at the suction inlet should be increased in size.
An eccentric tapered reducer should be used instead of a concentric tapered reducer to
prevent air pockets from formingand impairing pump efficiency.Inturn, the eccentric reducer
may be placed at the inlet of the pump and should be positioned so the straight side is up. A
horizontal suction pipe must have a gradual rise to the pump. A high point in the suction line
will form an air pocketand prevent proper pump operation. All joints in the suction line should
be airtight, to prevent air leakage that can reduce pump capacity and efficiency.
DISCHARGE PIPING
Position of the pump discharge is preferably either vertical or top horizontal. The discharge
piping should beshort and directwith aminimumnumber of elbows and fittings. Elbows should
not be used at the discharge outlet, as the friction encountered would be increased, resulting
in head loss. However,use of a larger discharge pipe than recommended may reduce the
total pump head, but increase the pump volume, which can cause pump vibration due to
overload. Use of a discharge pipe smaller than the pump discharge outlet increases the total
pump head but decreases the volume. If a reducer is required on the outlet port of the pump
and the discharge is vertical, a concentric reducer should be used. If the
dischargeishorizontalan eccentricreducershouldbe
used and should be positioned so the straight side is
down.
LOCATING VALVES
In suction lift applications where the lift is not very
high, it may be desirable to install a foot valve, to
facilitate priming and to prevent draining all the
liquid back to the source. A throttling valve should
be installed in the discharge piping to provide
control of the pump flow rate and prevent motor
overload.

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
ASSEMBLY PRELIMINARIES
Before beginning the assembly procedure, identify every element that is going to be installed.
You can use the exploded view and part list shown in pages 6 and 7. During the assembly
you may need the following tools:
1. 1", 3/4", 9/16" and 1/2" Wrenches.
2. 1/8", 5/32", 3/16" and 1/4" Allen wrenches.
3. Rubber mallet.
4. Caliper, useful when assemble seal type “E”.
5. 5/8" & 7/8" Socket –for impeller nut, for TR-C+ models.
6. 3/8" diameter steel rod –to hold stub shaft plus, for TR-C+ models.
7.Torque Wrench
Recently, we have added new lines to the known TR-C series: the kit plus, TR-C plus series,
and IC plus series for every specific application. There are some modifications in the
assembly in each one of these series without altering the operation of the equipment.
KIT PLUS (KIT+)
It is made up by a stub shaft plus, a stub shaft collar, a shaft key,animpeller plus, an impeller
nut, and the frontand back impeller gaskets. The collar may use one ortwo screws according
to the pump model. This assembly works the same as a standard assembly from the TR-C
series.
TR-C PLUS (TR-C+) SERIES
The TR-C plus series has been developed to facilitate and offer some advantages to the
assembly of the TR-C series pumps. TR-C plus series have a better subjection when
mounting the stub shaft onto the motor using a collar. The stub shaft plus is threaded and
offersa better assembly tothe impeller by means of a key and a nut. It was designed to meet
3A regulations. An ordinary TR-C series pump can be turned into a TR-C plus series with a
Kitplus.
IC PLUS (IC+) SERIES
Series IC plus is a modality of the TR-C series plus and is intended for industrial purposes.
It uses an internal mechanical seal denominated T21, which lodges in an industrial back
plate. Because of this is industrial, it does not meet 3A regulations. No other type of
mechanical seal, like “D”, “DG”, ”E” or “F” seals from the TR-C series, is compatible with the
IC plus series. An ordinary TR-C series pump can be turned into a IC plus series with a Kit
plus, an industrial back plate, and a mechanical seal type T21.
TR-C-M02 7
Before servicing pump, disconnect the
electrical power source, carefully relieve all
pressure and drain all fluids from pump and
connected piping.
WARNING
INSTALLATION

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
EXPLODED ASSEMBLY
8 TR-C-M02

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
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PART LIST
External balanced seal type D
11
Backplate “D”
1
11F
Backplate pin
2*
80
Carbon
1
80A
Cup seal “D”
1
80B
O-ring carbon
1
80C
Spring seal “D”
1
80K
Set screw collar seal “D”
2
80L
Drive collar “D”
1
Clamped-in seat seal type DG
11F
*
Backplate pin
2*
11H
Backplate “DG”
1
17J
Gland ring “DG”
1
17K
Bolt/screws gland ring
4**
17M
Lock washer
4**
80N
Seal seat “DG”
1
80P
PTFE gasket
1***
80R
PTFE gasket
1***
Leg brackets
207
Adjustable leg
4
209
Adjustable leg bracket
2
209A
Set screw
4
209B
Bracket mounting screw
4
Kit plus
2P
Impeller plus
1
6P
Stub shaft plus
1
24C
Shaft key plus
1
24D
Nut plus
1
91A
Back gasket plus
1
91B
Front gasket plus
1
92
Drive collar plus
1
92A
Bolt drive collar
1**
* Not necessary in some models
** Quantity may vary with model
*** Not interchangeable
Water cooled balanced double
seal type E
11B
Backplate “E”
1
11F
Backplate pin
2*
17
Follower
1
17A
Machine screw
4**
17B
O-ring
1
17C
Lock washer
4**
80
Carbon
2
80B
O-ring
2
80G
Cup seal “E” 2
80H
Spring seal “E”
1
80J
Drive collar “E”
1
80M
Set screw drive collar “E”
2
83C
Stuffing box “E”
1
83D
Machine screw
4**
83E
O-ring
1
Industrial Kit plus
Kit plus
1
11F
Backplate pin
2*
11P
Industrial backplate
1
95
Seal T21
1
Common components
1
Casing
1
2
Impeller
1
6E
Stub shaft
1
24
Retainer (impeller)
1
92A
Bolt drive collar
1
71
Adapter
1
71A
Adapter pin
2*
71B
Adapter mounting screw
4
75
Clamp assembly complete
1
90
Casing gasket
1
131
Seal guard assembly
1
131A
Set screw
1
132
Water cascade assembly
1
M
Motor
1
PART LIST

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
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ASSEMBLY
BEGINNINGTHEASSEMBLY
It is highly recommended that you resort to the diagram on page 6 to verify the assemblies
and subassemblies whose directions will follow.
1. LEG BRACKET ASSEMBLY
Sets of leg-brackets are optional and can be used to vertically adjust the pump. The size of
the brackets (209) and the legs (207) depend upon the NEMA or IEC motor.First, complete
the primary assembly of the legs and the brackets using the hexagonal screws (209A) to
tighten the legs tothe brackets.Next,use the hexagonal screws (209B) totighten the brackets
to the motor(210).You may need to lift the motorto complete this part of the assembly.
2. ADAPTER ASSEMBLY
Place the stainless steel adapter on the motor and tighten using fourhexagonal screws (71B)
with the torque values recommended on Chart 1
The adapter should be accompanied by two adapter pins, which normally come preinstalled.
If not, insert them in the corresponding drilled holes. These pins serve to set the backplate
(11) to the adaptor (71),hooking the backplate onto the adapter pins using the two backplate
pins (11F) located on the backplate. Depending upon the pump model and seal type, some
backplates do not havepins forreasons of design. The adapter comeswith a protectiveguard
(131) which comes attached by a hexagonal screw (131A). It is highly recommended, for
reasons of safety, not to operate the pump if this guard is not placed on the adapter.
3. SPACING OFTHE IMPELLER AND STUB SHAFT
To set the stub shaft onto the motor,it is necessary toplace it at the proper distance. To find
this position it is necessary to provide a spacing of seventy one-thousandths of an inch
(0.070 in.) between the impeller and the backplate, as shown in Figure A.
You can make this adjustment using a caliper or spacing gage.
Depending on the pump model and the seal type,the backplate
requires two pins (11F), which serve to hold the backplatein place
when mounted on the adaptor.
The backplate pins should always be placed pointing in a counter-
clockwisedirection so that the backplate does not slip. When handling
the backplate be careful not to damage the contact surface of the
mechanicalseal or the frontside of the backplate.
An explanation on how to place the stub shaft onto the motorfollowsup
next.Chart 2

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
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The tractionbetween shafts is achievedby friction.By tightening the drive collar bolt (s)(92A),
the drive collar plus (92) and the stub shaft (6P or 6E) closes pressing the motor shaft.To
havean optimum performance, it is necessary to align the three groups of the assembly: 1.-
The motorshaft keyway 2.- the groove3.- the side groovein the drivecollar just as shown in
Figure B. Slide the drive collar plus through the stub shaft all the way.Then slide both of
them through the motorshaft making the three grooves coincide. Remember the motor
shaft key is not needed.
STANDARD STUB SHAFT
Place the backplate onto the adapter and turn it in a counter-clockwise direction, locking the
backplate pins (11F) onto the adapter pins (71A).If necessary, pull out the stub shaft so that
it is still mounted onto the motor shaft. Place the retainer (24) into the stub shaft so that it
recedes completely into its slot and insert the impeller onto the stub shaft, making sure that
the retainer falls to one side to secure the impeller. Space the back of the impeller at a
distance of 0.070 in. from the face of the backplate and tighten the set screws in order to
secure the stub shaft.
STUB SHAFT PLUS
Place the backplate onto the adapter (71)and turn it in acounter-clockwise direction, pressing
it against the adapter so that the backplate pins (11F) lock onto the adapter pins (71A).Place
the impeller plus (2P) onto the stub shaft after placing the key (24C) into the key slot on the
shaft. Screw on the impeller nut (24D) and tighten until it makes contact with the impeller
using a socket (5/8” or 7/8” depending on the model).
You can use a 0.375 in. steel rod in the side hole of the shaft so that the shaft does not turn
during assembly. Space the impeller at a distance of 0.070 in. from the faceof the backplate.
STUB SHAFT TIGHTENING
While maintain the .070 in. separation, tighten the collar screws to set the stub shaft. Use v to
find the appropriate torque values. Before tightening, remember to align the three grooves.
IMPORTANT:Atthispoint the adapter is mounted, the stub shaft is fixedon the motor,andthe
impeller is spaced at a distance of 0.070 in. from the backplate. Take off the impeller and
removethe backplate to begin assembling the mechanical seal.
Place the deflector (40) in the ridge found on the standard stub shaft. Stub shafts plus do not
use a deflector.
ASSEMBLY

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
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ASSEMBLY
4. ASSEMBLING AND INSTALLING THE MECHANICAL SEAL
MECHANICAL SEALS. Among the TR-C, TR-C plus, and IC plus pump series, there exist
five types of mechanical seals.
One of these, the “T21”, is used exclusively with our IC+ series; specifically, in non-sanitary
applications. As for the remaining four types, their selection must be based upon the
application and the properties of the fluid being pumped.
The “D”seal is the mostcommonmechanical seal. Itis used when the process fluid is neither
corrosive nor abrasive. It is a balanced, external seal, designed tobe long- lasting.
The “F” seal is exactly the same as the “D” seal, but contains a water-cascadeassembly to
lubricate and cool the seal. The water-cascadeassembly is located on one side of the adapter.
This seal, although it is sanitary, is very dirty because the coolant tends to drip.
The“DG”seal consists of twoparts: one stationary and otherrotating.The rotatingpartconsists
of the same elements as the “D” seal. The stationary part consists of one piece made of
silicone, ceramic, or carbon tungsten, and which is placed in a gland ring. This type of seal
is used when the fluid to be pumped is abrasive, corrosive, or contains a product which
impedes the seal lubrication. The stationary seal is made of a very strong material and is
reversible; allowing for the seal to be utilized multiple times.
The “E”seal is a double-balanced seal that is cooled by water. This seal is composed of a
stuffing box which is filled with fluid (normally water)tocool the mechanical seal. The “E”seal
is used inconditions similar tothose of the “DG” seal, but in applications that handle extremely
high temperatures (up to 500º F). It can also be used in applications where there exists a
vacuum of up to 28 in. of mercury.
EXTERNAL-BALANCED SEAL TYPES “D” AND “F”. Locate the following pieces: carbon
(80), o-ring (80B), “D” seal cup (80A). “D” seal spring (80C), “D” seal drive collar (80L), set
screws (80K), and “D” seal backplate (11). Pre-assemble the set screws, making sure they
do not penetrate the inner diameter of the stub shaft and set the o-ring into the carbon so
that it sits at the back.Next,place the o-ring and carbon together ontothe cupso that the cup’s
three legs align with the carbon’s slots. Then, fit the spring onto the cup so that the tip of the
spring is touching a fourth, folded leg on the cup.If necessary, rotate the spring to touch the
two pieces. When handling the carbon (80), be careful not to bump or scratch the seat of the
seal, as this is the face that makes the seal.
For best assembly,the drive collar has apin or keythat
should fit into a slot in the cup. Use pressure to insert
the drive collar,making sure that the pin aligns with the
slot as shown in Figure C.
Slide the entire assembly onto the stub shaft.
The o-ring seals the flow of fluid through the
mechanical seal between the pump and the exterior
by filling the space between the stub shaft and carbon.

Installation, Operation & Maintenance Manual
TR-C Series Centrifugal Pump
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TR-C-
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The seal will provide a resistance when it slides on, so apply pressure until it has gone onto
the stub shaft completely. The position of the drive collar against the o-ring and carbon is
criticalto prevent leaks. Now,assemble the “D” seal backplate (11) and fixit with the backplate
pins. Push the carbon back with the backplate.
Once the backplate has been placed it is necessary to tighten the “D” seal collar set screws
(80L). To do this, you must exert a pressure on the drive collar towards the backplate, so
that the pin of the drive collar remains aligned with the slot in the cup.
Tighten the set screws once the drive collar has reached its closest point to the o-ring and
carbon. The drive collar should stay in its place against the o-ring –against the back –within
the limits of the carbon, as shown in Figure D. The spring does not
compress entirely.
When all parts are in their correct positions, the stub shaft
should be able to rotate freely when turned by hand. If it is
necessary touse excessive forcetoturnthe stub shaft, check
tobe sure thatthe components of the seal havebeenproperly
installed and that the drive collar is properly positioned.
The “F” seal is the “D” seal with a water-cascade assembly.
The water-cascade assembly (132) should be installed on
the adapter (71),so that the leak falls upon the seal seat of
the carbon, lubricating the seal against the backplate.
IMPORTANT: It is necessary to disassemble some of the
pump parts for cleaning and
sterilizing. For those Wright Flow products equipped with “D” seals, if a CIP (Clean-in-Place)
installation is used, disassembly is not necessary. Do not lubricate the seal with grease or oil,
the faces of the seals are lubricated by the fluid that is being pumped.
CLAMPED-IN SEAT SEAL TYPE “DG”. This seal type consists of two parts: one
stationary, and one rotating. The rotating part is the “D” seal assembly. For that reason, it is
highly recommended that you read the directions above for assembling the “D” seal before
continuing. The stationary part consists of the following elements: “DG” seal seat (80N), PTFE
gasket (80P), PTFE gasket (80R), “DG” gland ring (17J), lock washers (17M),bolts/screws
gland ring (17K), and “DG” seal backplate (11H).
IMPORTANT: Incorrectspacing between the impeller and backplate can result in dangerous
contact between the impeller and the faceof the stationary seal. That contact may wear down
the impeller and the seat of the gland ring. A visual inspection following the installation of the
impeller is recommended to check the spacing of the impeller and seal.
Takethe “DG” backplate (11H), turn it around and place the PTFE gasket (80R) against the
seal face.Next,install the seal seat (80N) –which is reversible –followed bythe PTFEgasket
(80P) and finally the gland ring (17J). In the seal type “DG”, the seal seat (80N) is enclosed by
the gland ring, which could be made of either silicone, tungsten, or ceramic
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Please remember that the PTFE gaskets (80P) and (80R) are not interchangeable.
Theseal seat (80N)ismadeof averystrong material and thereforeisveryfragile. It isimportant
to protect the faces of the stationary seal, just as with the backplate, against bumps and
scratches. Screw the gland ring into the backplate, using the screws (17K)and lock washers
(17M).Screwinthe backplate pins (11F) tothebackplate, if applicable. See Figure E.Tighten
the screws until the washers are flattened. If the screws are overtightened, you may crack
the stationary seal.
Assemble the “D” seal components onto the stub shaft (as explained in
the section regarding the “D” seal) taking care that the o-ring remains
inside of the carbon. Once both preassemblies are complete, that of the
“DG” seal onto the backplate and that of the “D” seal, take the backplate
and push on the “D” seal sliding it onto the stub shaft.
Bevery carefulnot tohit the “DG” seal with the end of the stub shaft. Now,
set the backplate ontothe adapter.Although space appears to be limited,
the spring can be compressed until the drive collar completely touches
the o-ring.
Once the backplate is set onto the adapter, push the drive collar against the backplate to
compress the spring. Tighten the set screws to set the seal when the spring cannot move
any farther.
The efficiency of the “D” and “DG” seals relies upon the position of the o-ring inside thecarbon
as well as the full compression of the spring. Figure F.
A “DG” type seal is used to handle fluids that
crystallize when allowed to settle over time. When
pumping abrasive or corrosive fluids, combine the
“DG” seal with EPDM gaskets. EPDM gaskets are
resistant to certain harsh chemicals. For more
information, please contact either the plant or your
distributor.
WATER COOLED BALANCED DOUBLE SEAL
TYPE “E”. This mechanical seal is very different
from the previous three, although it shares some
common components. It consists of two balanced,
rotating parts, and placed into a stuffing box, which
is normally flooded to cool the seal.
The “E” seal consists of the following parts. Find and
keep them at hand to make the assembly process
easier: stuffing box “E” (83C), o-ring (83E), machine screw (83D), follower (17),o-ring (17B),
machine screw (17A), lock washers (17C) forthe follower,“E” seal backplate (11B), backplate
pins (11F), spring (80H), drive collar “E” (80J), set screw drive collar (80M), two carbon seals
(80), two o-rings (80B) and two cups (80G). It is recommended to have a caliper on hand to
assemble this seal precisely.

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The following instructions assume that the adapter is assembled and that the spacing
between the impeller and backplate has been set.If not,werecommendyou refertothat
section of the assembly directions.
Place the o-ring (17B)in the groove of the follower (17).Attach the backplate pins (11F)to
the backplate (11B), take the o-ring (83E) and place it in the slot of the stuffing box (83C)
and place both parts against the backplate. Screw on the stuffing box (o-ring in place) to the
backplate with the machine screw (83D). Be sure to protect the faces of the backplate
during assembly. Pre-assemble the set screws (80M) onto the “E” drive collar (80J) without
penetrating the inner diameter.
Slide the “E” drive collar, along with the o-ring, onto the stub shaft (6E), with the o-ring
pointing towards the tip of the stub shaft. Pre-assemble the o-rings (80B) in the carbon seals
(80), pushing them to the back of the seat. Place each carbon seal onto a cup (80G). These
are the two rotating components that will be balanced on the spring (80H) inside the stuffing
box (83C).
Be very careful when handling the carbon seals, especially whenhandling the seal seat, because
that face in particular is crucial in maintaining contact between the stuffingboxand backplate.
Carefully slide the carbon seal, o-ring and cup, onto the stub shaft, using the “E” drive collar
(80J) as a support for the o-ring. The seal seat of the carbon should be able to touch the
follower (17).Slide the drive collar onto the stub shaft. Next,secure the drive collar to the stub
shaft at the proper distance (regardless of stub shaft model). For help, refer to Chart 3 which
indicated the spacing values, then take the Vernier caliper and use it tomeasure that distance
as shown in Figure G.
Locate the drive collar “E” (80J) and secureit with the set screws (80M).Placethe spring(80H)
onto thecup(80G). Thedrivecollarhastwopins, whichdragboth cupsalongtherotation of thestub
shaft.Eachcuphasafoldedlegthatinitiates traction withthedrivecollar. Try toplacethepinsbefore
thelegsofthecups, facingina counter-clockwise direction. FigureH.
Now, install the second set of the cup, o-ring and carbon (in that order) onto the stub shaft.
Puttheend of thespringinto thesecondcup,justasyoudidwiththefirst.Thesealseatofthesecond
carbonsealshouldpointtowards thebackplate (11B).Takethesub-assembly ofthebackplate (11B)
withthestuffingbox(83C)andplaceitonto theadapter (71), makingsurethatthestuffingboxdoes
not hit the components mounted on the stub shaft.Pushin and rotate the backplate until the pins
arelocked. If thismodeldoesnothave backplate pins, placethecasinggasket (90)into thesloton
the backplate, put on the casing (1) and tighten using the clamp assembly (75) to secure the
backplate.
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IMPORTANT: When you mount the backplate onto the adapter, the seal may supply
resistance. If this resistance is too much, check the seal assembly and be sure the drive
collar has been located correctly.Theefficiencyof the “E” seal relies on the proper installation
of the drive collar. The space in the stuffing box should contain both carbons in a balanced
stateof pressures and distances.FigureI.
The next step is to close the stuffing box.Todo this, you need to pull the follower against the
backplate. Use the machine screws (17A) and lock washers (17C) to close it, tightening until
the lock washers are flattened. The screws on a circular arrangement must be tightened
across in varying positions.
Itis recommended toset the backplate so that the1/8 NPTdrill-holes onthe stuffing box,point
upward and with a 45º inclination from the horizontal
plane, as shown in Figure J.
The water should enter through one connection and
leave through another, moving through the stuffing
box and in the process, cooling it.
The ideal quantity of water will depend upon
the temperature of your application. For vacuum
applications it is recommended to use a flow of 10
drops per minute, while maintaining a temperature of
176º F inside the seal; around 3 gallons per hour are
required.
IMPORTANT: Whenservicing pumps with “D”, ”DG”,
”F”, or “E” seals, inspect all disposable parts
such
as: carbon seals (be sure they have no bumps or
scratches),o-rings (they should maintain acircular form
and should not be bitten). In the case of abrasive fluids, use EPDM material for all gaskets
and o-rings. When dealing with high temperatures, use Viton.
Springs are not subject to wear because of tension or compression, except in extreme
cases. Carbon seals made of silicone, tungsten, or ceramic are very fragile but resist
abrasive and corrosive fluids.
45º

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5. KIT PLUS ASSEMBLY
IMPORTANT: These instructions assume that the adapter has been mounted to the motor
and the impeller has been spaced at a distance of 0.070in. from the backplate. If you have
not assembled the sub shaft, please read section 3 before proceeding. Please remember
that it is imperative youalign the keyslot on the motor shaft, the slot on the stub shaft and the
slot on the drive collar to properly mount the stub shaft, Figure B.
We can easily convert a TR-C series standard pump to a TR-C plus series pump with a Kit
plus. The TR-C plus series is 100% sanitary and meets thesanitary regulations setby 3A. The
TR-C plus series uses an improveddesign that maintains a tighter,more sturdy assembly. To
assemble a Kitplus, youmustfirstfindthefollowingcomponents:drivecollarplus (92),bolt drive
collar (92A),stub shaft plus(6P),stub shaft key(24C),backimpeller gasket(91A),frontimpeller
gasket(91B), impellerplus (2P)and impeller nut (24D).
IMPORTANT:In some cases, the front and back gaskets are interchangeable (only models
218/328 and 4410). The Kit plus is compatible with “D”, “DG”, “F”, and “E” seals. The only
differences are the method of installing the stub shaft to the motor and the retention of the
impeller. Figure K.
IMPORTANT:Beforecontinuing with the assembly ofthe
Kit plus, put together the seal type that you are going to
use (Please see section 4).
Once you have put together the seal and secured the
backplate, place the back gasket for the impeller plus
(91A) into the groove on the stub shaft plus (6P). Next,
place the shaft key (24C) into the key slot on the stub
shaft. Slide the impeller plus (2P) onto the stub shaft and
past the key usingthe impeller key slot, making sure that
the back gasket remains in its groove. Insert the front
impeller gasket (91B)into the groove on the impeller nut
(24D).Screwthe impeller nut onto the stub shaft making
sure that the front gasket remains in the groove on the
impeller nut.
Tighten the impeller nut using a torque wrench. Use
20 ft-lb for 114+ model and 40 ft-lb for the rest of
models. Figure L.
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IMPORTANT: Neverstart the pump without the stub shaft key in place, as doing so may lead
to friction between the impeller and stub shaft; causing seizure between the parts. Do not
forget to adjust the screws and impeller nut before starting up the pump. If you are using CIP
(Clean- in-Place) installations, there is noneed todisassemble the Kitplus. The threads of the
stub shaft and impeller nut are sealed from fluid entry thanks to the front and back gaskets,
and therefore are sanitary.
6. INDUSTRIAL T21 SEAL ASSEMBLY –IC+ SERIES
The IC plus series (industrial centrifugal pumps) is another configuration of the TR-C and
TR-C+ series designed for non-sanitary applications. The IC plus series does not meet 3A
sanitary regulations. An IC plus series pump is composed of the same parts as a standard
TR-C series pump, but requires the plus Kit to set the stub shaft and install the impeller. It
also uses an industrial internal seal –T21–and aspecially designed backplate. The T21seal
generally comes as a Kit and is disposable, so if one of the parts is damaged you need to
replace the entire Kit.
IMPORTANT: These assembly instructions assume that the adapter has been mounted to
the motorand the impeller has been placed at adistance of 0.070in. fromthe backplate. Ifthe
stub shaft has not yet been assembled, please return to section 3 before continuing. To
assemble the T21 seal (95), please identify the following parts:
Figure M
Industrial seal type T21
Loading seal
(elastomer)
Ceramic
seal seatCarbon
seal seat
Rubber gasket
(type o-ring)
Primary cup
Cup reinforcement
Spring
Figure N
Seal Components
The ceramic seal, which is reversible, goes inside the lodging, which is inserted into the
industrial backplate (11P). Place the reversible cup reinforcement into the primary cup so that
the legs align with the slots. Place the rubber gasket (o-ring) into the primary cup so that it
sits at the back and holds in the cup.
Now,place thecarbon into the cup,taking care not todamage the seal seat, so that thecarbon
aligns with the groovein the cup. Place the backplate –with the ceramic seal seat in place –
on the adapter,taking care not to bump the seal on the stub shaft threads.
Slide the sub-assembly of the carbon and cup onto the stub shaft until it touches the ceramic
seal. Place the shaft key (24C) and back gasket (91A) in their respective slots. Force the
spring into the cup and slide the plus impeller (2P) over the shaft keyand onto the stub shaft
and push. Place the front gasket (91B) in the groove on the impeller nut (24D) and tighten
theassembly.

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7. GENERAL ASSEMBLY INSPECTION
Before continuing, please check that all bolts/screws and set screws have been tightened.
Rotatethe stub shaft byhand, using the impeller.Thestub shaftshould rotateeasily. If
something is interfering with its rotation, inspect all parts to verify correct assembly (stub
shaft, seal, backplate, etc).
8. IMPELLER RETENTION
IMPELLER RETENTION ON STANDARD STUB SHAFTS. Find the following parts:
impeller (2), retainer (24) and standard stub shaft (6E).
Place the retainer into the drilled hole atop the stub shaft so that it is completely receded.
When you have placed the impeller at the back, make sure that the retainer falls to lock in
the impeller. Figure O.
IMPELLER RETENTION ON STUB SHAFTS PLUS. Find the following parts: impeller plus
(2P), impeller gaskets (back, 91A) and (front, 91B),impeller nut (24D), shaft key (24C) and
stub shaft plus (6P).
Place the shaft key into the stub shaft and place the back impeller gasket (91A) into the
groove on the shaft. Slide the impeller onto the shaft until it reaches the back and place the
front gasket (91B) onto the impeller nut, screwing the nut (24D) onto the impeller. Make sure
the gaskets stay in place. Figure P.
FigureO
Standard stub shafts
and impellerpin
FigureP
Stub shaft plus
and impellernut
Before inspecting your pump’s assembly,
double-check that the electric supply is
disconnected, and that there is no supply of
pressure or fluid into the piping.
WARNING
ASSEMBLY

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9. CASING ASSEMBLY
Oncethe impeller has been installed, the casing must be mounted. Place the casing gasket
(90) onto the groove on the backplate (11, 11B, 11H or 11P, depending on the seal type).
Take the casing (1) and place it onto the adapter, positioning the discharge at the desired
location. Take the clamp assembly (75) and place it around the casing. Tighten the clamp to
close the casing so that it is level around the perimeter. A rubber mallet may be helpful when
installing the casing.
10. BEFORE TURNING ON THE PUMP
•Check that the motor turns in a counter-clockwise direction.
•Keep the suction line flooded and the mechanical seal lubricated with the fluid whichis
going to be pumped. Never operate the pump when dry or it may damage the seal.
•Maintain a sufficient NPSH available in the suction line (please see the section on piping).