Db11/15 Oim Section Vii - Troubleshooting; Db11/15 Oim Section Viii - Warranty - Finish Thompson DB11 series Assembly, Installation And Operation Manual

Centrifugal pumps
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Section VII - Troubleshooting
General Notes:
Do not pump liquids containing ferrous metal fines.
If magnets decouple, stop pump immediately. Operating the
pump with the magnets decoupled will eventually weaken
the magnets.
Power monitors are required and must be used with all
ATEX certified pumps.
Do not use mismatched drive magnet assemblies (differ-
ent number of magnets on inner and outer drive magnet
assemblies).
Contact our Technical Service Department -
Phone: 1-800-888-3743
Email: techservice@finishthompson.com
if you have any questions regarding product operation
or repair.
No or Insufficient Discharge
Air leaks in suction piping
Pump not primed
System head higher than anticipated
Closed valve
Viscosity or specific gravity too high
Motor too large for magnet coupling rating (magnets
uncoupled)
Suction lift too high or insufficient NPSH
Clogged suction line or impeller vanes
Motor rotation incorrect (correct rotation when viewed
from the fan end is clockwise)
Insufficient Pressure
Air or gas in liquid
Impeller diameter too small
System head lower than anticipated
Motors speed insufficient (too low) or motor rotation
incorrect (correct rotation when viewed from the fan end is
clockwise)
Loss of Prime
Leak in suction piping
Foot valve or suction opening not submerged enough
Foot valve too small or leaking
Air or gas in liquid
Foreign matter in impeller
Leaking valve. Suction lift too high or insufficient NPSHa
Excessive Power Consumption
Head lower than rating
Excessive flow
Specific gravity or viscosity too high.
Vibration/Noise
Loose magnet
Drive magnet rubbing
Pump cavitating from improper suction or feed
Motor or piping not properly secured
Foreign object in impeller
Section VIII - Warranty
Finish Thompson, Inc (manufacturer) warrants this pump product
to be free of defects in materials and workmanship for a period of
five years from date of purchase by original purchaser. If a war-
ranted defect, which is determined by manufacturer's inspection,
occurs within this period, it will be repaired or replaced at the
manufacturer's option, provided (1) the product is submitted with
proof of purchase date and (2) transportation charges are prepaid to
the manufacturer. Liability under this warranty is expressly limited
to repairing or replacing the product or parts thereof and is in lieu
of any other warranties, either expressed or implied. This warranty
does not apply to normal wear of the product or components. This
warranty does not apply to products or parts broken due to, in whole
or in part, accident, overload, abuse, chemical attack, tampering, or
alteration. The warranty does not apply to any other equipment used
or purchased in combination with this product. The manufacturer
accepts no responsibility for product damage or personal injuries
sustained when the product is modified in any way. If this warranty
does not apply, the purchaser shall bear all cost for labor, material
and transportation.
Manufacturer shall not be liable for incidental or consequential
damages including, but not limited to, process down time, trans-
portation costs, costs associated with replacement or substitution
products, labor costs, product installation or removal costs, or
loss of profit. In any and all events, manufacturer's liability shall
not exceed the purchase price of the product and/or accessories.
Warranty Registration
Thank you for your purchase of this quality Finish Thompson
product. Be sure to take a minute to register your pump at
Finishthompson.com/warranty. Simply provide the model
number, serial number and a few other pieces of information.
Ordering Spare Parts
Spare parts can be ordered from your local distributor. Always refer
to the pump model to avoid error.
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