Mokon Duratherm, Инструкция по эксплуатации

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15
Seal Replacement/Maintenance
Warning: Make certain that the system is disconnected from the power
source in compliance with all local and national codes before attempting
to service or remove any components. Never run the pump when dry.
Maintenance:
Inspection: Pump should be periodically checked for proper operation. If the system has changed
or if the pump is operating noisily or erratically, then the pump should be removed and examined.
It should be repaired and parts replaced as necessary.
Cleaning: Remove oil, dust, dirt, water, chemicals from exterior of pump and motor. Blow out
interior of open motors with clean compressed air at low pressure. Regularly drain moisture from
TEFC motors.
Draining: If the pump is located in an area subject to freezing temperatures, the pump must be
drained when not in operation or add sufficient antifreeze.
Seal Replacement:
Disassembly:
 Turn off power.
 Close suction and discharge valves (if equipped).
 Drain pump.
 Remove bolts holding base to foundation.
 Remove casing bolts.
 Remove motor and rotating element from casing, leaving casing and piping undisturbed, if
possible. If not, then remove the whole assembly.
 Insert a screwdriver in one of the impeller waterway passages and back off the impeller nut
(Ref 24).
 Remove motor shaft end cap. Insert a screwdriver in slot of motor shaft. While holding shaft
against rotation, unscrew impeller (Ref 2) from shaft by turning counterclockwise when
facing impeller.
 Pry off rotating member of mechanical seal from motor shaft by using two (2) screwdrivers.
Be careful not to damage the pump cover (Ref 11).
 Remove pump cover (Ref 11 & 71) from cast iron disc. (There is no hardware used to attach
cover to disc.) Place cover on a flat surface with convex side down. Push out stationary
member of mechanical seal. It is not necessary to remove the cast iron disc from the motor
to replace the seal.