TOYO PUMPS NORTH AMERICA CORPORATION 3
Note: This is a protection device and is not intended to replace external controls.
e) When cable extension is necessary, extended cable size must be adequate to avoid low voltage
conditions , which may cause motor burn out. Select the proper gauge size and minimize length
of the extension cable not to cause a large voltage drop. If you are not sure, it is recommended
to consult with the Toyo representative office or Toyo suppliers nearest you. When extending the
cable, be careful not to submerge the splice into the water to avoid the possibility of electrical
shock.
f) Connection to Power Source
DL-110: Plug in or connect to one phase power source.
CAUTION: Be sure to provide an adequate grounding and to use a ground leakage circuit
breaker.
AFTER OPERATION
To keep the pump in good condition and maintain high pumping efficiency the following inspections
should be carried out after each fifty (50) hours of operation. (See Fig.A6470)
a) Remove Strainer-stand (item #23) and Pump Casing (#20). Clean out any solids and/or mud,
sand, stones or other foreign material which may have collected in the Pump Casing.
b) Check the Impeller (#21) for wear, obstruction or foreign material accumulation. If parts are
extremely worn, replacement should be made at the first opportunity.
c) After the inspections, clean the inside and outside of pump with clean water. When it is stored,
keep it in a dried condition.
REGULAR INSPECTION
1) LUBRICANT CHECK (See Fig.A6470)
Check the mechanical seal by inspecting the condition of the lubricant in the oil chamber. You may
readily determine the condition of the mechanical shaft seals based upon contamination level in the
oil.
a) Lay the pump on its side with Oil Plug (#35) facing upwards.
After unscrewing the plug, turn the pump over so that the hole faces downward. Drain and collect
the lubricant in a clean suitable container.
b) If the lubricant is clear and clean (not milky appearing or no water present), the seals should be in
a good condition.
c) Refill the chamber with fresh lubricant, using a good multiviscosity grade lubricant (Turbine Oil
ISO VG #32).
d) Extreme discoloration (milky appearing or yellowish-gray) or free water in the lubricant requires
immediate replacement of Mechanical Seal (#25) and V- Ring(#26).
e) When inspection is complete, replace the oil plug and carefully tighten to prevent leakage.
Note: Replace Packing of the oil plug, if it is found to be defective.
Periodic inspection and replacement of the oil should be made as follows:
*Inspection Cycle: Every 1,000 hours of running time
*Replacement Cycle: Every 2,000 hours of running time
But we recommend inspection once a year even if running time is less than above.
