moyno 20302, Руководство по обслуживанию

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TROUBLESHOOTING
WARNING: Before making adjustments, disconnect
power source and thoroughly bleed
pressure from system prior to
disassembly. Failure to do so could lead to
electric shock or serious bodily harm.
Failure To Pump.
1. Motor will not start: Check power supply. Voltage must
be ± 10% of nameplate rating when motor is in locked
rotor condition. Check for faulty capacitor on 1 phase
Models.
2. Motor runs and thermally kicks out: Check for
excessive discharge pressure. Check for defective
centrifugal switch on 1 phase Models. Increase
ventilation to motor. Do not use less than #14 wire size.
3. Stator torn; possible excessive pressure: Replace
stator, check pressure at discharge port.
4. Flexible joint broken; possible excessive pressure:
Replace joint, check pressure at discharge port.
5. Wrong rotation (3 phase only): Rotation must be
clockwise when facing pump from motor end. Reverse
the connections of any two line leads to the motor.
6. Excessive suction lift or vacuum.
Pump Overloads.
1. Excessive discharge pressure: Check pressure at
discharge port for maximum ratings given in Table 1.
2. Fluid viscosity too high: Limit fluid viscosity to 100 CP
or 500 SSU.
Noisy Operation.
1. Excessive suction lift or vacuum: Maximum suction lift
is 25 feet for water.
2. Suction line too small: Check pipe size. Be sure lines
are free from obstructions.
3. Pump Cavitates: Pump speed is 1725 rpm. Viscosity of
fluid should not exceed 100 CP or 500 SSU.
4. Flexible joint worn: Replace joint. Check pressure at
discharge port.
5. Insufficient mounting: Mount to be secure to a firm
base. Vibration induced noise can be reduced by using
mount pads and short sections of hose on suction and
discharge ports.
Seal Leakage.
1. Leakage at startup: If leakage is slight, allow pump to
run several hours to let faces run in.
2. Persistent seal leakage: Faces may be cracked from
freezing or thermal shock. Replace seal.
Pump Will Not Prime.
1. Air leak on suction side: Check pipe connections.
PUMP DISASSEMBLY
WARNING: Before disassembling pump, disconnect
power source and thoroughly bleed
pressure from system. Failure to do so
could result in electric shock or serious
bodily harm.
1. Remove suction and discharge piping. Drain pump
body by removing drain plug (261B).
2. Remove screws (112) holding suction housing (2) to
discharge housing (1). Remove suction housing (2) and
stator (21).
3. Remove rotor (22) from flexible joint (24) by turning
counterclockwise (RH thread). On pinned, 3 phase
models, remove rotor pin (45) with suitable punch.
4. Flexible joint (24) can be removed from motor shaft by
using a 3/16 allen wrench in end of joint and turning
counterclockwise. On 3 phase motors, remove motor
pin (46) with suitable punch, then remove joint:
5. Slide mechanical seal (69) off motor shaft.
6. Remove discharge housing (1) from adaptor flange (12)
by removing screws (1 12B).
7. Carefully pry seal seat out of discharge housing (1). If
any parts of mechanical seal are worn or broken, the
complete seal assembly should be replaced. Seal
components are matched parts and are not
interchangeable.
8. Remove adapter flange (12) from motor (70) by
removing screws (112A).
9. Remove slinger ring (77).
PUMP ASSEMBLY
1. Install slinger ring (77).
2. Attach adaptor flange (12) to motor housing using
screws (112A).
3. Attach discharge housing (1) to adaptor flange (12)
using screws (1128). Be sure to center seal bore on
shaft.
4. Install mechanical seal (69) in discharge housing (1)
using the following procedure:
a. Clean and oil sealing faces using clean oil (not
grease).
Caution: Do not use oil on EPDM parts. Substitute
glycerin or soap and water.
b. Oil outer surfaces of the seal seat, and push
assembly over the motor shaft and into the discharge
housing (1) seating it firmly and squarely.
c. After cleaning and oiling the shaft, slide the seal
body along the motor shaft until it meets the seal
seat.
d. Install seal spring and spring retainer on shaft.
5. Thread flexible joint (24) into motor shaft in a clockwise
direction (RH thread). Tighten with 3/16 allen wrench.
On 3 phase models, install motor pin (46).
6. Thread rotor (22) onto flexible joint (24) in a clockwise
direction (RH thread). On 3 phase models, install rotor
pin (45).
7. Slide stator (21) on rotor (22). On 331 & 332 models,
insert rounded end of stator ring (135) into end of stator
prior to installing stator on rotor.
8. Secure stator (21) and suction housing (2) to discharge
housing (1) using screws (112).
9. Lubricate rotor and stator by filling Suction housing and
discharge housing with fluid to be pumped.
10. Connect Suction and discharge piping and power
source.
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