Xylem IM078 User Manual [en, es, fr]
INSTRUCTION MANUAL
IM078
Retain Manual for Reference
Marlow Series 20EVP
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
SUBJECT PAGE
Recommended Precautions ............................................................................................................................................ 3
Operating Instructions ................................................................................................................................................... 3
Operating ...................................................................................................................................................................... 4
Priming ...................................................................................................................................................................... 4
Rotation.....................................................................................................................................................................4
Winter Storage ........................................................................................................................................................... 4
Lubrication ................................................................................................................................................................ 4
Maintenance .............................................................................................................................................................. 4
Warning ..................................................................................................................................................................... 4
Caution......................................................................................................................................................................4
Instructions for Licensed Electricians ......................................................................................................................... 4
Troubleshooting Guide .................................................................................................................................................. 5
Repair Parts ................................................................................................................................................................... 6
Limited Warranty ..........................................................................................................................................................8
Owner’s Information
Owner’s Information
Please fill in data from your pump nameplate.
Warranty information is on page 8.
Pump Model:
Serial Number:
Dealer:
Dealer’s Phone Number:
Date of Purchase:
Installation Date:
2
CAUTION
CONGRATULATIONS
You are now the owner of a Goulds Water Technology
pump. This pump was carefully inspected and subjected
to final tests before releasing for shipment. In order to
assure maximum performance, please follow the simple
instructions in this manual.
RECOMMENDED PRECAUTIONS
1. Avoid system pressures that may exceed the maxi-
mum working pressure of the pump.
2. Should the fluid temperature rise more than 50ºF.
above ambient, expansion joints must be installed on
both the suction and discharge ports to relieve any
stress on the pump casing.
3. All electrical wiring of the pump installation must be
done by a licensed electrician who will observe all
national and local electrical codes. All motors require
a magnetic starter with current overload protection.
4. No modifications, additions or deletions should be
made to the pump, without prior approval of the
factory.
5. In systems where shock wave pressures may be gener-
ated, protective devices such as check valves/gate
valves, etc., must be installed on the discharge line
to prevent shock pressures from entering the pump
casing.
6. In systems containing discharge check valves, gate
valves, etc., the pump will not prime against a closed
valve. Check the discharge valves making sure they
are open before attempting to prime the pump. If
there is a possibility of air being entrapped in the
pump casing, install an automatic venting device to
bleed off the air.
7. This pump is designed primarily for water use. Before
pumping other liquids, read carefully the CAUTION
below.
8. Overheated pumps are dangerous. Burns or explosion
could occur due to steam pressure. Operating pumps
with suction and discharge closed is one cause of severe overheating. If overheating of the pump occurs:
1. Stop pump immediately, 2. Allow pump to cool, 3.
Slowly and cautiously vent pump.
9. Drain casing completely when servicing pumps handling volatile or harmful liquids.
10. Do not use in a combustible atmosphere.
11. Make daily checks of the tightness of suction and
discharge pipe, drain, filter plug and pump gaskets.
Operation should not proceed until all of the above
items have been checked and are tight.
12. After servicing the pump, always install the coupling
guards, belt guards and other safety devices as originally found prior to disassembly.
The performance of Goulds Water
Technology are based upon clear, cold,
fresh water with suction conditions as shown on the
performance curve. If used to pump other liquids, pump
performance may differ from rated performance based
on the different specific gravity, temperature, viscosity,
etc. of the liquid being pumped. A standard pump may
not be safe for pumping all types of liquids, such as toxic,
volatile or chemical liquids, or liquids under extreme
temperatures or pressures. Please consult your Goulds
Water Tehcnology catalog as well as local codes and
general references to determine the appropriate pumps
for your particular application. Since it is impossible
for us to anticipate every application of a Goulds Water
Tehcnology pump, if you plan to use the pump for a
non-water application, consult Goulds Water Tehcnology
beforehand to determine whether such application may
be proper or safe under the circumstances. Failure to do
so could result in property damage or personal injury.
OPERATING INSTRUCTIONS
GENERAL
• Our shipping container has been specically designed
to prevent transit damage. However, any indications
of damage or shortage should be carefully noted on
the delivery ticket and a claim filed promptly with the
carrier.
PROPER LOCATION
• By placing your pump on a rm, level foundation or
between firmly supported pipelines, you reduce harmful vibrations and unnecessary noises.
• While EV series pumps are self-priming and may be
located above the source of liquid supply, best pump
operation is obtained by locating the pump as close as
possible to the liquid being handled, keeping in mind a
pump can push liquid more effectively than it can pull
or draw liquid. Provide the necessary space around the
pump for future inspection and servicing of the unit.
PIPING
• All piping should be independently supported to eliminate excessive strain on the pump. Avoid unnecessary
friction losses. Keep your piping as short as possible
and use the fewest possible elbows and fittings. Pipe
joint compound that will not dissolve in the liquid
being pumped should be used on all joints. Gate valves
combined with unions or flanges, on both sides of the
pump, will facilitate pump removal without disturbing
the piping. It is occasionally advantageous to use suction pipe one size larger than that for which the pipe
is fitted. Eccentric reducers should be used to change
pipe sizes.
STRAINER ADVISABLE
• Protect your investment. Install a strainer on the suc-
tion line. This will eliminate clogging of the pump,
poor performance and excessive wear. A 16 mesh
strainer submerged one foot below the liquid level is
adequate for EV series pumps. In-line strainers are
available from your Goulds Water Technology dealer.
Piping that has a continuous rise will facilitate draining
the system.
VALVES
• Install a check valve on the discharge side of the pump.
This will prevent high surge back pressures from
damaging the pump. If the pump is disconnected this
check valve will prevent the liquid from draining the
discharge line.
• Some installations may require the throttling of the
pump. Gate valves may be used on the discharge side.
Place the check valve between pump and gate valve.
3
• If the pump is operated against a low discharge pres-
WARNING
CAUTION
sure, it may be noisy. Throttle down the discharge gate
valve until the noise is eliminated. This restriction will
not cause any appreciable loss in capacity.
OPERATING
PRIMING
• Fill the pump tank with liquid before starting. This
may be done through the elbow on the side of the tank.
Use pipe compound when replacing the plug in the
side elbow. These Goulds Water Technology prime and
reprime themselves providing the pump tank is filled
with liquid. Should you lose this liquid from the tank
accidentally or by draining purposely, it will be necessary to refill it with liquid before starting. High suction
lifts, or long suction lines, require additional time and
reduce the performance of the pump. Should you have
difficulty, refer to the Troubleshooting Guide.
• Always keep liquid in the pump tank. No further
lubrication of the pump end is necessary including the
seal assembly. If flow does not start within five minutes,
stop the motor and determine cause (see Trouble-shooting Guide). Be sure all suction and discharge valves are
open when the pump is priming. Operating the pump
with a closed valve in the system can cause pump damage.
ROTATION
• Your pump is specically designed to rotate as indicated
by the arrow on the pump tank. Three phase motors
can rotate in either direction. Check the rotation. Interchanging any two leads of a three phase motor will
reverse the rotation, if this is found necessary.
Some motors are equipped with built-
in thermal over-loads to shut off the
motor in the event the temperature becomes excessive
(as a result of mechanical or electrical problems; such
as low voltage, poor ventilation, overloaded lines, etc.).
These motors will restart automatically as the motor
cools down. For safety sake, do not work on any motor,
without first shutting off the electricity at the source as
outlined above in the “Warning”. Also all three phase
motors are not thermal protected and motor starters are
recommended.
INSTRUCTIONS FOR LICENSED ELECTRICIANS:
INSTRUCTIONS FOR LICENSED ELECTRICIANS:
TURN POWER OFF
1. Determine the voltage of the power supply line to
motor. Voltage, phase, ampere draw, and cycles are
given on the motor nameplate.
The wire used to supply power to the motor must be
large enough to carry the amperes for the required
length without excessive voltage drop. The following table is meant to be a guide only to the minimum
proper wire size selection. Always consult local electrical codes.
Typical AWG Wire Size for Single Phase Jet Pump Motors
50 Ft. Wire Length 100 Ft. Wire Length
HP
115 V 230 V 115 V 230 V
1
⁄3 14 – 12 –
½ 14 14 10 14
¾ 12 14 10 14
1 12 14 8 14
1½ 10 14 8 12
2 8 12 8 12
WINTER STORAGE
• During freezing weather, it is especially important to
drain all of the liquid from the pump tank. This will
prevent ice from cracking the tank or internal parts.
• To maintain the excellent performance of the pump, follow the motor manufacturer’s storage instructions.
LUBRICATION
• The latest engineering advancements have been in-
corporated into our self-lubricating shaft seal. The liquid
being pumped cools and lubricates the seal, therefore
the pump should never be run dry. A seal well vent has
been provided to protect the electric motor from liquid
damage should the seal leak. DO NOT plug this vent. If
leakage becomes excessive, replace the seal assembly.
MAINTENANCE
• If your pump is not used for a few days, drain the liquid
completely. This will prevent aggravating costly rust
formations.
All electrical work MUST be done by
a licensed electrician. Before working
on motors be certain that the electrical power is off at
the main junction box. Disconnect the fuse or circuit
breaker and have the main switch tagged “Do Not Energize This Switch, Personnel Working on Equipment”.
4
TROUBLESHOOTING GUIDE
The following are some common causes of problems that may arise.
SYMPTOMS PROBABLE CAUSE RECOMMENDED ACTION
Will Not Prime No liquid Fill tank with liquid.
Air leak in suction line Tighten all joints or remake using new
compound.
Blocked suction line Clean strainer or suction line.
Worn seal Install new seal.
Suddenly Stops Clogged strainer or impeller Clean debris.
Pumping
Slowly Stops Clogged impeller, diffuser, lines or loose Clean debris and use strainer. Tighten filler
Pumping filler plug plug.
Excessive Leakage Worn seal Replace seal.
From Seal Well Vent
Will Not Worn seal Replace seal.
Hold Prime
Air leak in suction line Fix leak.
Missing or broken impeller key Replace.
Suction lift too high Relocate pump closer to supply.
Performance Poor Worn impeller or seal Replace with new impeller or seal.
Suction lift too high Relocate pump closer to supply.
Low Flow Motor not up to speed, low voltage Larger lead wires.
Or Pressure
compound.
Blocked line Clean strainer or suction line.
Worn seal Install new seal.
Incorrect rotation (three phase motor) Interchange any two leads to reverse the
rotation.
Noisy Operation Worn motor bearings Replace.
Low discharge head Throttle discharge.
Debris lodged in impeller Disassemble pump and clean out.
Cavitation Improve suction conditions.
Air leak Tighten all joints or remake using new
5
REPAIR PARTS LIST
Key Description Key Description
1 Drain plug 11➀ Seal assembly
2 Cover 12 Tank
3➀ Gasket, cover 13➀ Shim, motor
4➀ Impeller nut 14➀ Impeller key
5➀ Impeller washer 15 Cap screw
6➁ Impeller 16 Cap screw
7➁ Diffuser 17➀ Slinger
8➀ Gasket, diffuser 18 Elbow
9➀ Impeller, shim 19 Filler plug
10➀ Impeller spacer 20 Motor
➀ Recommended spare parts
➁ Recommended distributor stock, export spares and critical service.
IMPORTANT:
How to use the drawing to order parts:
The above grouping of parts illustrations cover many different Goulds Water Technology models, including your
own pump. The table on the left page indicates the name of each part. Should you need a replacement, refer to
the drawing - locate the part that matches your pump part. Contact your local Goulds Water Technology dealer
and supply him with the key number and description of the parts required, along with your pump model number
and serial number, which are located on the pump nameplate.
16
20
14
17
13
15
12
11
10
9
8
3
2
1
5
4
7
6
19
18
6
NOTES
7
GOULDS WATER TECHNOLOGY LIMITED WARRANTY
This warranty applies to all water systems pumps manufactured by Goulds Water Technology.
Any part or parts found to be defective within the warranty period shall be replaced at no charge to the dealer during the warranty period. The warranty period shall exist for a
period of twelve (12) months from date of installation or eighteen (18) months from date of manufacture, whichever period is shorter.
A dealer who believes that a warranty claim exists must contact the authorized Goulds Water Technology distributor from whom the pump was purchased and furnish complete
details regarding the claim. The distributor is authorized to adjust any warranty claims utilizing the Goulds Water Technology Customer Service Department.
The warranty excludes:
(a) Labor, transportation and related costs incurred by the dealer;
(b) Reinstallation costs of repaired equipment;
(c) Reinstallation costs of replacement equipment;
(d) Consequential damages of any kind; and,
(e) Reimbursement for loss caused by interruption of service.
For purposes of this warranty, the following terms have these definitions:
(1) “Distributor” means any individual, partnership, corporation, association, or other legal relationship that stands between Goulds Water Technology and the dealer in
purchases, consignments or contracts for sale of the subject pumps.
(2) “Dealer” means any individual, partnership, corporation, association, or other legal relationship which engages in the business of selling or leasing pumps to customers.
(3) “Customer” means any entity who buys or leases the subject pumps from a dealer. The “customer” may mean an individual, partnership, corporation, limited liability company,
association or other legal entity which may engage in any type of business.
THIS WARRANTY EXTENDS TO THE DEALER ONLY.
Xylem, Inc.
2881 East Bayard Street Ext., Suite A
Seneca Falls, NY 13148
Phone: (800) 453-6777
Fax: (888) 322-5877
www.xyleminc.com/brands/gouldswatertechnology
Goulds is a registered trademark of Goulds Pumps, Inc. and is used under license.
© 2012 Xylem Inc. IM078 Revision Number 4 March 2012
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