Q-Pumps QTS-M08 User manual

Operation and Maintenance Manual
of Positive Displacement Pump
QTS Series
Twin Screw Pump
www.qpumps.com
QTS-M08
[e-mail]
Affiliated
02-11

2
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08 QTS-M08
CONTENT
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Q-Pumps Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Damage or Loss During Shipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Receiving the pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Moving Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Lifting the Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Know your Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Data Sheet Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Pump General Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Pump Arrangement Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
QTS Rotors and Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Using Variable Frequency Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Base Allignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Pump Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Starting Up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Shutting Down Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Restarting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Maintenance: Pump Assembly and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Tools and Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Oil and Oil Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Torque Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Pump Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Removing the Rotors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Mechanical Seals Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Uninstalling the Single Mechanical Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Installing the Single Mechanical Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Uninstalling the Double Mechanical Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Installing the Double Mechanical Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Rotor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Rotor Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Bearing Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Important Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Risks to Consider . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Annex A: CIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Annex B: Nut-and-Locknut Technique . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

3
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08
ABOUT THIS MANUAL
To ensure the best performance of your pump, please read this manual before starting it. You
will nd useful information and instructions for the assembly and disassembly procedures
required for the necessary pump maintenance.
For any questions related to the operation, maintenance or installation, please contact your
local distributor or directly to Q-Pumps:
Q-Pumps S.A. de C.V.
Acceso “A” #103, Fracc. Industrial Jurica
Querétaro, Qro., México, 76130
Call: [phone] y [phone]
Fax: [phone]
E-mail: suppor[email protected]
Web: www.qpumps.com
The information in this manual might change without notice, we recommend to visit our website
for any updates.
Q-Pumps S.A. de C.V. Warranty
Q-Pumps guarantees that all manufactured and sold products are free from defects in materials
and manufacture for a period of one (1) year from the date of shipment. The warranty does not
apply to products which require repair or replacement due to what is considered normal wear.
Conditions caused by normal wear include (but are not limited to standard rotors wear) casing,
mechanical seals, gears and bearings wear.
Accidents, operating errors or improper maintenance are not covered by the warranty. Q-Pumps
assumes no liability for incidental, accidental or consequential damages. The purchaser by
acceptance of delivery assumes all liability for the consequences of use or misuse by it, its
employees or third parties. Unless they are approved in advance, Q-Pumps does not assume
any costs related to parts and / or service.
Q-Pumps disclaims any responsibility for modications or conversions to the pump and the
system. For security reasons and functionality use original parts only. The use of other parts
voids the warranty and excludes liability for any consequences.
The pump is designed only for pumping uids under established characteristics in the selection
sheet. Any other use besides the intended one without the prior written consent of the
manufacturer’s application, will result in disclaim of any responsibility from Q-Pumps.
If the pump is stored temporarily or indenitely, avoid weather exposure and protect the
connection ports with plastic plugs supplied with your pump. Turn the pump shaft by hand
every two months to change the rotating position of the bearings.
ABOUT THIS MANUAL

4
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08 QTS-M08
General Information
Every QTS pump is completely assembled, lubricated, synchronized, factory tested and ready
to use. Standard maintenance practices are described in this manual. For more information,
please see the Maintenance section. Following these guidelines will grant a longer pump
service life under a proper usage and installation.
If necessary to return the equipment under warranty, or for some other reason, contact
Q-Pumps to receive a Return Material Authorization (RMA).
Damage or loss during shipment
If you receive the equipment in poor condition or it is lost during transportation, le a claim
with the carrier immediately. The transport service provider is responsible for collecting the
goods, Q-Pumps ensure they received them in perfect conditions.
Receiving the pump
The pump inlet and outlet ports are covered prior to shipment to ensure that no foreign materials
enterinsidethepump during shipping.Ifthe protective coversaremissingatdelivery,remove the
pump cover and inspect the interior to ensure that it is free of contaminants before energizing
the pump. Please keep nearby the pump serial number; this will allow you to order replacement
parts and / or make warranty claims. For more information related to shipping damage and
warranty claims please see the General Information or Warranty section in this manual.
ABOUT THIS MANUAL

5
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08
SAFETY
IMPORTANT: Read and understand this manual before installation, operation or maintenance of
the pump. Installation, operation and maintenance in combination with inappropriate unsafe practices
can cause serious individual risks or death, damage to the environment and the pump itself. Equipment
damage caused by user negligence will void the pump warranty.
There are safety symbols used in this manual to identify security situations and how to avoid them:
CAUTION: Hazardous or unsafe practices that may result in minor injuries or damage
to equipment or property.
DANGER: A situation in which there is a possibility of a potentially harmful incident;
hazardous or unsafe practices that could result in serious injury or death.
ELECTRICAL HAZARD: Risk caused by direct electrical energy contact. Burns,
electrical shocks, electric arc and re or explosions caused directly by electricity.
ROTATING PARTS: Risks from exposure of personnel to rotating parts that may be
dangerous and cause injuries. Contact with these parts when carried out without
employing security practices such as signs, guards, approach alarms, etc.
TEMPERATURE: The main risk is associated with direct contact of hot or cold
sources.
Operate the pump only in accordance with its specic use mentioned in the data sheet and considering
the risk and safety issues described in this manual.
In case of malfunction, the pump must be switched o immediately and the responsible sta must
attend those malfunctions. Do not allow access to the pump to unqualied personnel. Please contact
your distributor.
Avoid operating procedures that endanger the personnel and/or people who are not directly involved
in the process. The user must ensure that authorized and qualied personnel carry out the relevant
activities of maintenance procedures, operation and installation.
Provide safety devices for any of the following cases and ensure their proper performance:
• If conditions of heat, cold and moving parts are presented in place, provide protection against
accidental contact with the pump. Protection must not be removed during the operation. Guards
are recommended.
• To avoid electric shocks, ground all electrical systems properly.
• Provide adequate pressure relief devices to prevent excessive pressure on the discharge side of
the pump between the pump and the rst stop device.
• Always follow local safety guidelines.
SAFETY

6
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08 QTS-M08
Electrical Connections
• A qualied and trained electrician should make the electrical connection to the motor.
• Use safety equipment necessary to manipulate electricity.
• Use appropriate signs in areas where electrical equipment is exposed.
• The pump must be de-energized and secured to prevent startup before starting any work
of electrical equipment.
• Use the right wire number according to the motor voltage and amperage.
• Follow diagram connections shown on the motor nameplate; check the motor installation
manual for any questions.
• Isolate and protect the terminal ports and connections.
• Make sure the rotation of the pump is correct.
• The motor of your pump has been tested and was selected to meet the requirements of a
specic application. The motor amperage consumption should be within the range indicated
on the motor nameplate for a proper operation.
• The user is responsible for the safety and proper operation of equipment when special and
others motors are used (not supplied by Q-Pumps).
Temperature
The QTS Series are designed to work in a normal temperature range between -40 °C (-40 °F) and
100 °C (212 ° F). Be careful when touching the body and bearing housing to avoid burns when
the temperature rises. If the application requires a higher temperature range please contact
Q-Pumps to be advised about this case.
Moving Parts
The principle of operation of the QTS Series is by the turning of a pair of synchronized rotors
which can trap any foreign object and get stuck due to an improper equipment operation.
Never operate the pump without assuring thet the front cover is properly in place.
The bearing housing contains rotating parts; never operate the pump without the gear case.
Watch precautions with free turning shafts of drive elements when not properly coupled to
the pump. Likewise, do not operate the pump without the coupling guard placed in position.
Handling the Pump
Carefully transport the equipment avoiding contact, drops or damage. To prevent any of these
situations the QTS Series are provided with an eye bolt located on the bearing housing for lifting.
In the same way, gear motors and motors have an eye bolt (or at least one hole for using this
part) located in the body.
SAFETY

7
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08
Use proper equipment such as elevators or cranes together with slings or straps with the right
capacity to lift the total weight.
Take precautions and follow the manufacturer recommendations to use the slings or straps.
When lifting assemblies motor/gear-motor coupled to the pump, always try to lift them up
simultaneously. Make sure to place the pump assembly on a stable surface. Once the assembly
is positioned in place, check that the assembly is aligned; follow the coupling alignment section
in this manual for this purpose.
CorrectIncorrect
SAFETY

8
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08 QTS-M08
KNOW YOUR PUMP
Congratulations! You’ve acquired a high technology and quality equipment for your sanitary
pumping needs. QTS Series is the best solution toward other brands in the market due to its
special characteristics:
• Ideal to pump low and high viscosity uids (up to 1,000,000 cP).
• All wet parts in contact with the uid are made of 316L stainless steel.
• Ideal for handling abrasive products.
• Can speed up to 3,000 rpm depending on the pump model, type of uid and
application. It is a bidirectional pump, so it can help recovering line product.
• Can be used as process pumps as well as a CIP pump reducing cost in additional
equipment and timing.
• Suction and discharge enlarged option available.
• Totally drainable.
• Even when running at high speed, there is no rotor/rotor/body contact.
• Meets 3A and EHEDG (European Hygienic Engineering and Design) standards.
• Low NPSH requirement thanks to its high suction capacity.
• Can pump uids with up to 60% entrained air.
Nomenclature and Data Sheet
All QTS pumps have a model number which can be understood by the use of a nomenclature.
The model number includes ports size, seals, and rotor type. It can be found printed on top of
the pump bearing case and in the selection report. The selection report describes the pump
operating conditions for a specic application. Operating the pump in conditions dierent
than selected can void the warranty. If the application changes please contact a distributor or
Q-Pumps before operation.
KNOW YOUR PUMP

9
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08
NOMENCLATURE
Series Pump Model Seal Type Rotor Type Hardening Port Type Elastomer
Material
Wet Parts
Material Jacketed Option
Digits QTS 202020 SS 3 1 M E,V SS,H* J
Add ”R” for reverse Add ‘J’ for
thermal jacket
304040 4 4 306030 6 3 306040 6 4 404040 4 4 404060 4 6 406040 6 4 406060 6 6 408040 8 4 408060 8 6
Mechanical Seal*
Type Description
SN Single Seal (SiC vs
Carbon) - Stantard
SS Single Seal (SiC vs Sic)
ST Single Seal (Tungsten vs
Tungsten)
DN
Double (SiC vs Carbon
/ SiC vs Carbon) -
Standard
DS Double (SiC vs Sic / SiC
vs. Carbon)
DSS Double (SiC vs SiC / Sic
vs SiC)
DT Double ( Tungsten vs
Tungsten)
LS Lip Seal (coming soon)
Rotor Pitch*
1 1.5 Turns -
Double Helix
2 2 Turns 3 3 Turns 4 4 Turns
2H 2 Turns Hot 3H 3 Turns Hot
... Uture Pitches
Hardening*
Description
1 Casing only
(armoloy)
2 Casing (armoloy)
and rotors
(SuperExpanite)
3 Casing (armoloy)
and rotors
(Kolsterising)
4 Without hardening 5 Rotors only
(SuperExpanite)
6 Rotors only
(Kolsterising)
7 Casing and Rotors
(Expanite)
8 Casing only
(Expanite)
A Acrylic case
(Demo Only)
Elastomer*
Material Description
EEPDM
(Standard)
V VITON
(FKM)
CCHEMRAZ
(FFKM)
Ports*
Type Description
M Clamp
T Beavel Seat
S NPT
J SMS
F ANSI Flange
W Weldable
D DIN 11864-1
GS-A (Round
threaded
o-ring)
D1 DIN 11851
(Round
threaded
gasket)
D2 DIN 11864-2
NF-A (LARGE)
/ 11853-2 NF-A
(Flange)
D3 DIN 11864-2
BF-A (LARGE /
11853-2 BF-A)
(Flange)
*For other options contact Q-Pumps
Pump
Size
Port Size4
Front Top
101015 1.5 1.5 101020 1.5 2 101515 2 1.5 101520 2 2 102015 2.5 1.5 102020 2.5 2 103015 3 1.5 103020 3 2 202020 2 2 202025 2 2.5 202520 2.5 2 202525 2.5 2.5 203020 3 2 203025 3 2.5 204020 4 2 204025 4 2.5 303030 3 3 303040 3 4 304030 4 3
A BPE ASME
C IDF
(International
Dairy
Federation)
I ISO Clamp
B1 BSM
(BS1864/
AS1528)
B2 RJT (Ring
joint type BS-
4825)
Wetparts
Material Description
SS Stainless
Steel
H HASTELLOY
C276

10
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08 QTS-M08
KNOW YOUR PUMP
Data Sheet Example
Type:
Material:
Elastomers:
Date: 1
Size
3 in Suction
OP 1 OP 2 OP 3 CIP 3 in Discharge
50 100
1000 1
1.1 1
60 15
480
3.64 3.7
501.74 208.29
1.83 0.12
457 1120
23 56
Type:
Power (hp):
Torque (lb in):
Speed (rpm):
Voltage (V):
Service Factor:
Coupling:
Base Size:
Extras
Rotors: No
Pump Casing: Yes
Frontal Cover:
Back Cover:
Shafts: 17-4 PH
Bearings Housing:
Guards:
Base:
Page:
QTS SERIES 300
Selection No.: XXXX-01
QTS-333-SS-21-M-V
Selected by:
ABC
Revision:
A
Customer
Seal
Single Mechanical Seal
EXAMPLE
SiC/SiC
FKM
7/20/2017
Quantity:
Application Data
Ports
Type
Pumping Fluid:
Concentrate
Front
Tri Clamp
Operating Points:
Top
Flow (gpm):
Viscosity (cSt):
Pump Ratings
Specific Gravity:
Maximum Particle Size (in):
1.00 in
Suction Pressure (psi):
Maximum Differential Pressure (psi):
150
Discharge Pressure (psi):
Threads per Rotor:
2
pH:
Operating Data
Shaft Power (hp):
1.15
Temperature (°C):
Particle Size (mm):
Operating Data Curves at Constant Speed
Solids Content (%):
FLEX 7 S EPDM
Torque (lb in):
NPSH required *(psia):
Pump Speed (rpm):
Drive Frequency (Hz):
Drive System and Mounting
6 Pole Motor
10
540
1200
220/440
Notes
SS 304
1
Materials
Hardening
SS 316 L
Chromium Coating

11
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08
Pump General Assembly
The pump uses twin screw rotors, when rotating they move the uid through the casing. The
elements inside the gear case are responsible for transmitting the synchronized movement and
the force required for pumping the uid. Bearings, spacers, and shafts are inside the bearing
housing.
1. Front cover (with port connection,
usually inlet)
9
10
6
7
5
4
1
4. Pump casing
5. Back cover (with port connection,
usually outlet)
6. Bearing housing
7. Pump base plate (NEMA/IEC)
9. Drive shaft
10. Gear case
Pump Arrangements / Assemblies
The QTS series pumps can be delivered coupled to a drive element in dierent ways to solve
one specic application. They can be ordered and delivered as follows:
Pump Only
In this case the pump is supplied with a drive
shaft for coupling, does not include motor/
gear-motor, coupling or base.
Pump Coupled to a Motor Assembled on a Base
This assembly includes a motor with a coupling,
coupling guard and base.
KNOW YOUR PUMP

12
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08 QTS-M08
Pump Coupled to a Gear-Motor
Assembled on a Base
This assembly includes a gear-motor with
a coupling, coupling guard and base.
QTS Rotors and Clearances
The design of QTS rotors (twin screws) in addition to the clearances kept with the casing, allow
pumping high viscosity uids without the risk of contact between them. The correct operation
of the pump depends on its proper rotor synchronization.
Using Variable Frequency Drives
Variable frequency drives are useful to perform multiple operating points including the CIP
process using the same pump. By changing the speed of the motor the pump can increase
or decrease the ow to reach dierent points of operation. If your equipment is supplied with
a variable frequency drive, it’s the result of an analysis of the applications of the pump, please
follow the data shown in the Data Sheet.
If you want to use a variable frequency drive after the analysis of the application of the pump,
please contact your distributor or directly to Q-Pumps to be advised about this case. Remember
that using your pump under dierent conditions than those explained in the Data Sheet may
result in damage to the equipment, personnel and it can void your warranty
BASE ALIGNMENT
Pump / base assemblies are aligned in Q-Pumps factory prior to shipment. However assem-
bles must be checked prior operation to avoid any misalignment. Misalignment may cause un-
necessary wear and shorten the life of the pump. You can notice misalignment with excess
noise and vibrations. To check and align the pump to its drive rst remove the coupling guard.
KNOW YOUR PUMP
COUPLING GUARD

13
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08
Proceed to verify the angular alignment by measuring the space between the couplings in
both vertical and horizontal direction. The measured space has to be equal at both sides of the
coupling use shims in the pump base or motor base if needed. Proceed to align the pump and
drive parallel to the axis of rotation. Use a straight edge in both top and side of the couplings to
guarantee parallelism.
Pump Rotation
Check the direction of rotation prior to connecting the pump to the drive.
ALINEACION PARALELA ALINEACION ANGULAR
VISTA SUPERIOR VISTA LATERAL
BASE ALIGNMENT

14
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08 QTS-M08
PUMP OPERATION
Follow these steps for the proper operation of your pump before, during and after starting
it up. Remember that the correct operation of the pump ensures proper performance and
long service life. Not following these recommendations could result in damage to the pump
voiding the warranty.
Starting Up Procedure
Before starting the equipment, ensure the following:
• Oil is on its level; otherwise ll the gear case until the oil lls the sight glass.
• Mechanical seals are not leaking. Double mechanical seals must be lubricated without
exception. The pump is able to run dry for a short period of time (not recommended).
Prevent dry starts to avoid damaging the mechanical seals.
• Jackets are properly connected and have adequate supply of heating or cooling
medium.
• The pump is cleaned and sterilized.
• The pump is primed with the uid to be pumped.
• In order to prevent cavitation, check the valves in the suction side are fully open.
• The valves on the discharge side are fully open to prevent overpressure inside the
pump.
• Security measures are taken at the discharge side of the pump to protect against
overpressure (open valves, corresponding jacketed piping, by-pass, and recirculation
or pressure relief valves).
• The manometers at the discharge are operational.
When starting the motor, check and adjust the operating speed according to the data sheet,
after the motor reaches the operation speed search for leaks.
Shutting Down Procedure
After shutting down the motor check the following:
• The pump slows softly. If a variable frequency drive is used both acceleration and
deceleration ramps can be programed.
• If the pump has double mechanical seal even when the pump is stopped keep the
supply of the buer uid until it is depressurized.
• If a jacket is used please adjust it until the pump temperature goes below a 100 °C/212 °F.
Restarting Procedure
Before restarting the pump check the smooth rotation of the shafts without restrictions and
repeat the starting up procedure.
PUMP OPERATION

15
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08
PUMP OPERATION
Double Mechanical Seal Lubrication
This diagram is only a reference. there are other ways to connect the lubrication system
but always use the lower port as inlet and the top port as outlet. each mechanical seal
is independent, the buer pressure must be less than the process uid pressure and the
maximum buer pressure is 80 psi (5.5 bar)
The outlet of the right mechanical seal can be used as the inlet of the left mechanical
Connections Sizes
SIZE AHose OD
QTS 025 M6X1.0 6mm
QTS 100 1/8 NPT-27 ¼in
QTS 200
QTS 300
QTS 350 ¼ NPT-18 3/8 in
QTS 400
INLET L INLET R
OUTLET R OUTLET L
A

16
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08 QTS-M08
MAINTENANCE: Pump Assembly and
Disassembly
To assemble and disassemble the pump, follow the recommendations described below.
Always use original spare parts and follow the instructions in this manual. Not following these
recommendations could result in damage to the equipment and void the warranty. Remember
to read the safety recommendations.
Tools and Spare Parts
Some spare parts such as mechanical seals, O-rings and gaskets kits may be required for
solving any contingency.
The following tools are provided with the pump:
1. Special wrench to tighten lock nut (gear case).
2. Hook for O–rings removal.
3. Steel thickness gages in sizes of 0.001, 0.002, 0.004 and 0.008”.
You may require these tools:
1. Set of ball end hexagonal L-keys in standard sizes: 3/16”, 1/4”, 5/16” and 3/8”.
2. Socket wrench and set of six points hexagonal sockets.
3. Wrenches 7/8”, 1”, 1 ½”, 1 1 ⁄4”, (1 7/8” & 1 15/16 for QTS 400)
4. It is very important to have a torque wrench (capacity from 4 to 50 lb·in).
Also you may need FDA silicone base grease for incidental contact.
Oil and Oil Change
The pump comes with Food Grade Mineral Oil from factory.
Oil Viscosity
Model Viscosity Quantity
QTS 025 ISO VG-68 .055 L
QTS 100 ISO VG-68 .39 L
QTS 200 ISO VG-68 .75 L
QTS 300 ISO VG- 68 2.3 L
QTS 350 ISO VG- 100 3.3 L
QTS 400 ISO VG-100 4.2 L
Oil change is needed if one of the following conditions is present:
First oil change 240 hours
Non-continuous operation* 2000 hours
Continuous operation** 2500 hours or 4 months (whichever comes rst)
*Twelve or more pump startups per day
** Less than twelve pump startups per day
MAINTENANCE
MAINTENANCE

17
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08
MAINTENANCE
MAINTENANCE
11
2X
24
2X
26
2X
2
3
52
4X
21
4X
28
20X
5
12F-Q
2X
13
6X
14
4X
29
2X
25
6X
31
4X
7
6
54
48
17
2X
40
12X
47
16
43
2X
44
2X
41
19
33
4X
18
51
2X
45
6X
49
50
23
2X
38
6X
15
2X
36
4X
37
2X
8
9
34
2X
1
12A-E
2X
42
20
39
12X
4
10
27
2X
46
6X
Exploded View QTS 025

18
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08 QTS-M08
MAINTENANCE
1
2
12A-J
2X
3
6
8
9
15
2X
17
2X
10
41
42
18
46
6X
7
11
2X
14
4X
43
2X
21
4X
22
4X
26
2X
23
2X
25
2X
27
2X
28
2X
29
2X
31
4X
30
4X
32
53
4X
33
4X
35
36
4X
37
2X
38
6X
39
12X
40
12X
19
45
6X
20
47
49
44
2X
16
34
13
8X
12K-T
2X
48
5
54
24
2X
50
51
3X
Esquema explosivo QTS 100
Exploded View QTS 100

19
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08
1
4
2
12A-J
2X
3
6
8
9
15
2X
17
2X
10
41
42
18
46
6X
7
11
2X
14
4X
43
2X
21
4X
22
4X
26
2X
23
2X
25
4X
27
2X
28
2X
29
2X
31
4X
30
4X
32
53
4X
33
4X
35
36
4X
37
2X
38
6X
39
12X
40
12X
19
45
6X
20
47
49
44
2X
16
34
13
8X
12K-T
2X
48
54
5
24
2X
51
3X
50
Exploded View QTS 200, 300
MAINTENANCE

20
OPERATION AND MAINTENANCE MANUAL
QTS SERIES Twin Screw Positive Displacement Pump
QTS-M08 QTS-M08
MAINTENANCE
21
4X
22
4X
1
27
2X
11
2X
24
2X
26
4X
23
2X
4
32
2X
2
3
25
4X
12A-J
2X
28
53
4X
13
8X
14
4X
29
2X
48
8
9
34
35
36
4X
37
2X
15
2X
38
6X
43
2X
44
2X
16
17
2X
41
42
39
12X
40
12X
18
19
20
45
10X
46
10X
52
2X
51
2X
10
47
50
33
4X
49
31
4X
30
4X
7
6
5
12K-T
2X
Exploded View QTS 350 y 400