Penguin MTD Series Maintenance and service guide

Installation & Maintenance
PENGUIN
PENGUIN
MODELS
MTD-5
MTD-7-1/2
MTD-10
Series MTD
Magnetic Drive Pump
MATERIALS
B - Polypropylene
C - PVDF (Kynar)
Penguin magnetic-driven pumps are designed to handle a large range of chemicals without diffi culty. Constructed of polypropylene, kynar,
Series MTD pumps have an upper working temperature of 190/220/250 degrees, respectively, and thus can handle highly corrosive or mild
chemicals, acids or solvents. Series M pumps eliminate the conventional shaft seal found in most pumps. This means that there is no rotating
seal to wear out and allow the liquid being pumped to leak out. The pumping action may eventually fail, however, the liquid can never leak
out. Series MTD pumps are easy to install and operate, and are virtually maintenance free. All pumps have been tested for proper operation
before leaving the factory. To obtain optimum service life, please follow all instructions.
Install the pump as close as possible to the liquid reservoir from which the liquid is being pumped. As more energy is necessary to prime the liquid than to
discharge the fl uid, make the suction as short as possible.
Always make sure there is enough liquid in the reservoir and the level is high enough considering the capacity of the pump unit. Inadequate liquid will cause
vortex in the reservoir. A vortex occurs when air mixes from the surface into the fl uid. This can disturb the fl ow and also prevents the pump from priming.
Never run the pump for more than 5-10 minutes against a closed discharge valve. This will cause overheating of the fl uid in the pump and will damage the
polypropylene parts. Temperature in this case will increase up to 220 degrees. If the pump is being run against a closed discharge valve for a long duration
of time, install a small bleed line back into the reservoir before the discharge valve of the pump. If the line is small, there is a minimum pressure loss. This
prevents overheating by recirculating the fl uid.
Model MTD pumps are supplied as standard in a single phase, single voltage, 115V, 50/60c motor with 230V as an option. All other models supplied with a
single phase are dual voltage, 115/230V motors. The factory wires all dual voltage motors for the lower voltage (115V) unless otherwise requested. When
changing from 115V wiring to 230V wiring, follow the motor manufacturer’s wiring instructions, which are found in the motor junction box or motor label. Be sure
to wire the motor for clockwise rotation as viewed from the suction entrance of the pump. A power cord and plug are supplied for immediate plug-in operation
on motors wired for the lower voltage. These motors have already been wired at the factory for proper rotation. A plug is not supplied on motors wired 230V.
Motors supplied in three-phase are dual voltage, 230/460V, 50/60c which are not wired at the factory. Since direction of rotation cannot be determined without
operating the pump, the motor rotation must be checked before operation. Attach leads to motor and bump start. Since these pumps must not run dry for more
than 10 seconds, do not leave motor running. As viewed from the suction entrance of the pump, check for clockwise rotation. If counterclockwise rotation,
change any two leads and check rotation again. Many options are available on the M Series motors including explosion-proof and special voltage motors. If
any of these options are required, please check the motors carefully or consult factory.
It is recommended to enlarge the suction line a minimum of one size larger than the suction entrance. Never reduce plumbing on the suction. Avoid 90 degree
elbows and never use a 180 degree elbow. Make sure that every suction coupling/connection is airtight. Always use a valve on the discharge of the pump.
In case of a fl ooded suction, in which the liquid level is higher than the center of the suction entrance, provide a T-connection with a small valve after the
discharge valve to assist in letting the air out during fl ooding. In case of a non-fl ooded suction, in which the liquid level is lower than the center of the suction
entrance, provide a foot valve on the end of the submerged suction line.
ELECTRICAL
PLUMBING
RECOMMENDATIONS
INTRODUCTION

Chemical Reaction Disclaimer
The user must exercise primary responsibility in selecting the product’s materials of construction, which are compatible with the  uid(s) that
come(s) in contact with the product. The user may consult Finish Thompson, Inc. (manufacturer) and a manufacturer’s representative/
distributor agent to seek a recommendation of the product’s material of construction that offers the optimum avail-able chemical compatibility.
However neither manufacturer nor agent shall be liable for product damage or failure, injuries, or any other damage or loss arising out of a
reaction, interaction or any chemical effect that occurs between the materials of the product’s construction and  uids that come into contact
with the product’s components.
Safety Precautions
WARNING: READ THIS MANUAL COMPLETELY BEFORE INSTALLING AND OPERATING THIS UNIT. FAILURE TO FOLLOW THESE
PRECAUTIONS CAN RESULT IN SERIOUS INJURY OR DEATH.
WARNING: Magnetic  eld hazard: This pump contains powerful magnets. Exposed magnets (pump not connected to motor) produce
powerful magnetic  elds. Individuals with cardiac pacemakers, implanted de brillators, other electronic medical devices, metallic pros-thetic
heart valves, internal wound clips (from surgery), metallic prosthetic devices or sickle cell anemia must not handle or be in the proxim-ity of the
magnets contained inside the pump. Consult a health care provider for speci c recommendations before working with this pump.
WARNING: Magnetic force hazard. This pump should only be disassembled and assembled using the recommended procedures. The
magnetic attraction is powerful enough to rapidly pull the motor end and the wet end together. Do not place  ngers between the mating
surfaces of the motor and wet ends to avoid injuries. Keep the drive magnet and impeller assembly away from metal chips or particles, items
with magnetic stripes like credit cards and magnetic computer media such as  oppy discs and hard drives.
WARNING: When pumping  ammable or combustible liquids with a MTD Series pump it is important to follow these guidelines:
1. You must use a PVDF pump. PVDF has conductive carbon  bers added which allow it to be grounded when installed in
a properly grounded piping system or when a properly installed grounding strap is attached to a housing bolt. If PVDF is not
compatible with the liquid being pumped, you should consider an ETFE lined UC Series magnetic drive pump.
2. You must select the non-sparking (Ns) bronze bump ring option. The non-sparking ring is pressed into the clamp ring or
motor adapter and prevents sparking should the motor bearings fail and the outer mag drive assembly runs out of round.
3. You must select an explosion-proof FTI motor or provide your own explosion-proof motor.
When pumping non- ammable or non-combustible liquids in a hazardous area using a DB Series pump, it is important to take
these guidelines:
1. You must select the non-sparking (Ns) bronze bump ring option. The non-sparking ring is pressed into the clamp ring or
motor adapter and prevents sparking should the motor bearings fail and the outer mag drive assembly runs out of round.
2. You must select an explosion-proof FTI motor or provide your own explosion-proof motor.
Model Number and Serial Number
Record the model number and serial number below for future reference. This is important
information when ordering replacement parts or when technical assistance is required. The
numbers are found on a label located on the motor adapter.
Model Number___________________________
Serial Number___________________________
IMPORTANT INFORMATION - READ FIRST
CAUTION: DO NOT put fi ngers or hands between these two
magnetic mating surfaces during assembly or disassembly.
Drive Magnet
Rear Housing
Inpeller Magnet
2

Installation/Operation Precautions
CAUTION: This pump should never be operated without liquid in the casing. It is recommended that run dry protection be used.
Optional electronic power monitors are available to help protect against run dry. If the pump has a PTFE or ceramic bushing, IT
CANNOT BE RUN DRY WITHOUT CAUSING DAMAGE TO THE PUMP. However, the pump can operate without liquid in the
casing if the pump has a carbon bushing. The exact length of time the pump can operate dry with a carbon bushing varies with
operating conditions and the environment.
CAUTION: Never start or operate with a closed suction valve. Never operate with a closed discharge valve.
CAUTION: Always provide adequate NPSHa (net positive suction head available). It is recommended to provide at least 2 feet
(61 cm) above the NPSHr (net positive suction head required).
CAUTION: If pump is used on variable speed drive, do not exceed the frequencey for which the pump was designed (for
example, if the pump is 50 Hz model, do not exceed 50 Hz).
Protection Control
A power monitor,  ow switch, pressure switch or similar device must be used to protect against dry running, closed discharge
valve or decoupling. Any of these conditions could lead to a rise in surface temperature of the pump.
Construction Materials
Pump must be manufactured from PVDF with a PVDF motor adapter and bronze bump ring and have the designation “-A” in the
pump part number. The PVDF contains conductive carbon which allows it to be grounded when installed in a properly grounded
piping system or when a properly installed grounding strap is attached to a housing bolt. The bronze bump ring is pressed into the
clamp ring or motor adapter and prevents sparking should the motor bearings fail and the outer drive magnet runs out of round.
Grounding
Static sparking can cause an explosion. When operating in a hazardous area or pumping a hazardous  uid the entire pump
system must be grounded to prevent static discharge. Before operating the pump, ensure the electrical continuity throughout the
pumping system and earth ground is 1 Ohm or less. If greater than 1 Ohm, re-check all grounding connections.
Elastomer Selection
Proper o-ring material must be chosen for the  uid being pumped. Improper material selection could lead to swelling and be a
possible source of leaks. This is the responsibility of the end user.
Leaks
The pump must be checked for leaks on a regular basis. If leaks are noticed, the pump must be repaired or replaced immediately.
Temperature Classi cation
The surface temperature of the DB Series pumps depends upon the temperature of the  uid that is being pumped. The following
chart lists different  uid temperatures and the corresponding pump surface temperature.
Installation & Operation Instructions MTD-5, MTD-7-1/2, MTD-10
WARNING: Hot surfaces. This pump is capable of handling liquids with temperatures as high as 220º F (104º C). This may cause
the outer areas of the pump to become hot as well and could cause burns.
WARNING: Rotating Parts. This pump has components that rotate while in operation. Follow local safety standards for locking out the
motor from the power supply during maintenance or service.
WARNING: Chemical Hazard. This pump is used for transferring many types of potentially dangerous chemicals. Always wear
protective clothing, eye protection and follow standard safety procedures when handling corrosive or personally harmful materials.
Proper procedures should be followed for draining and decontaminating the pump before disassembly and inspection of the pump.
There may be small quantities of chemicals present during inspection.
WARNING: The pump and associated components are heavy. Failure to properly support the pump during lifting and movement
could result in serious injury or damage to the pump and components.
WARNING: Never run pump at less than minimum  ow or with the discharge valve closed. This could lead to pump failure.
Fluid Temperature Max. Surface Temperature Temperature Class Max. Allowable Surface Temp.
29°C (85°F) 55°C (131°F) T6 85°C
77°C (170°F) 76°C (168°F) T5 100°C
104°C (220°F) 84°C (183°F) T4 135°C
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4
Maximum Noise Level: 80 dBA (pump only)
Maximum Allowable Motor Power:
Do not exceed 7.5 kW (10 horsepower) for 50 Hz, 2900 rpm applications. For 60 Hz, 3450 rpm applications, the pump is capable
of starting a 15 horsepower motor but is limited to a maximum of 13 horsepower (9.7 kW) while running. Use the information in the
chart below to determine the maximum specic gravity capabilities by impeller trim for non-overloading applications. The use of a
power monitor is strongly recommended for 60 Hz applications above 10 horsepower (7.5 kW).
3450 rpm (60 Hz) 1725 rpm (60 Hz) 2900 rpm (50 Hz) 1450 rpm (50 Hz)
10 gpm (2.3m3/hr) 5 gpm (1.1 m3/hr) 10 gpm (2.3 m3/hr) 5 gpm (1.1 m3/hr)
MTD-5, MTD-7-1/2, MTD-10 Capabilities
Maximum Working Pressure: 90 psi (6.2 bar)
Maximum Temperature: Polypropylene: 180º F (82º C); PVDF: 220º F (104º C)
NOTE: Maximum temperature is application dependent. Consult a chemical resistance guide or the chemical
manufacturer for chemical compatibility and temperature limits.
Solids: Maximum particle size is 100 microns for slurries and 1/64” (.4 mm) for occasional solids.
Maximum hardness is 80 HS. Maximum concentration is 10% by weight.
NOTE: If solids are being pumped, it is recommended that the pump have silicon carbide components for best results.
Pumping solids may lead to increased wear.
Minimum Allowable Flow Rate: Do not allow the ow rate to drop below the minimum ow rate listed in the chart below.
Cleaning
The pump must be cleaned on a regular basis to avoid dust build up greater than 5 mm.
Motor Rotation Test
Pump must be full of liquid with no trapped air in the suction and discharge lines before the rotation of the motor is checked. Do not
operate pump until it is full of liquid.
Start Up
The pump must be lled from a ooded suction tank (gravity) or primed with liquid from an outside source. Open the inlet (suction) and
dis-charge valves completely and allow the pump to ll with liquid. Close the discharge valve. Turn the pump on and slowly open the
discharge valve. Adjust the ow rate and pressure by regulating the discharge valve. Do not attempt to adjust the ow with the suction
valve.
Maintenance
The recommended maintenance schedule depends upon the nature of the uid being pumped and the specic application. If the pump
is used on a clean uid, it is recommended that the pump be removed from service and examined after six months of operation or after
2,000 hours of operation. If the pump is used on uids with solids, high temperatures or other items that could cause accelerated wear,
then this initial examination should be sooner.
After the initial examination of the internal components and wear items are measured, a specic maintenance schedule can be
determined. For best results, it is recommended that the pump be removed from service annually for examination.
Installation & Operation Instructions MTD-5, MTD-7-1/2, MTD-10

5
MTD Maximum Specic Gravity MTD-5, MTD-7-1/2, MTD-10
Maximum Specic Gravity for Non-Overloading Applications
3450 rpm (60 Hz)
Closed Impeller
Diameter
Maximum
Specic Gravity
7.25” (184.2 mm) 1.0
7” (177.8 mm) 1.1
6.5” (165.1 mm) 1.5
6” (152.4 mm) 1.8
5.5” (139.7 mm) 1.8
5” (127.0 mm) 1.8
4.5” (114.0 mm) 1.8
2900 rpm (50 Hz)
Closed Impeller
Diameter
Maximum
Specic Gravity
184.2 mm (7.25”) 1.35
177.8 mm (7”) 1.6
165.1 mm (6.5”) 1.5
152.4 mm (6”) 1.8
139.7 mm (5.5”) 1.8
127.0 mm (5”) 1.8
3450 rpm (60 Hz)
Open Impeller
Diameter
Maximum
Specic Gravity
6” (152.4 mm) 1.5
5.5” (139.7 mm) 1.8
5” (127.0 mm) 1.8
4.5” (114.0 mm) 1.8
2900 rpm (50 Hz)
Open Impeller
Diameter
Maximum
Specic Gravity
181.0 mm (7.13”) 1.35
177.8 mm (7”) 1.5
165.1 mm (6.5”) 1.75
152.4 mm (6”) 1.8
139.7 mm (5.5”) 1.8

Assembly Installation and Operation MTD-5, MTD-7-1/2, MTD-10
6

Motor/Electrical/Maintenance/Installation MTD-5, MTD-7-1/2, MTD-10
7

Disassembly/Reassembly MTD-5, MTD-7-1/2, MTD-10
8

9
Disassembly/Reassembly MTD-5, MTD-7-1/2, MTD-10

10
Disassembly/Reassembly MTD-5, MTD-7-1/2, MTD-10