I just upgraded the motor on my Sta-rite Dura-Glas from a single speed to a 2-speed and replaced the shaft seal and o-rings in the process. When I first fired it up, there was a good deal of squeaking from the area of the shaft or impeller. It's mostly gone away after a few minutes of running and I'm guessing it was the ceramic seal breaking in, but I wanted to check. I'll post a recording of the sound in a second here if I can.
New motor squeaks a bit. Normal?
- Thread starter kcbaltz
- Start date
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samiguy
LifeTime Supporter
- May 21, 2008
- 216
- Pool Size
- 16000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Monarch ESC36 / ESC8000
Hmm. Is the pump primed? You don't want the pump to run dry.
Also check there is no play on the motor mount to the back plate.
Did you use lube on the seal where the diffuser slides in to the front housing?
Provided instructions from owners manual. NOTE step 5.
Pump Reassembly/Installing New Seal
1. Ceramic seat must be clean and free of dirt, grease, dust, etc. Wet outer edge of O-Ring with small
amount of liquid detergent; press ceramic seat into seal plate cavity firmly and squarely with finger
pressure (Figure 9).
2. If ceramic seat will not locate properly, remove it, place face up on bench and reclean cavity. Ceramic
seat should now locate.
3. If seat still will not locate properly, place a cardboard washer over the polished face and use a
piece of 3/4" (19mm) standard pipe for pressing purposes.
NOTICE: Be sure not to scratch or mar polished surface or seal will leak.
4. Remount seal plate on motor. Tighten bolts to 60-80 inch-lbs. (69-92 kg/cm) torque.
5. Apply a small amount of liquid detergent to inside diameter of rotating half of seal.
6. Slide rotating seal member, polished face last, over threaded shaft end and shaft shoulder until rubber
drive ring hits shaft shoulder.
NOTICE: Be sure not to nick or scratch polished seal face; seal will leak if face is damaged.
7. Screw impeller onto shaft (clockwise); this will automatically locate seal in seal plate.
NOTICE: On models with impeller screw: install impeller gasket and lock screw (left-hand thread –
turn counterclockwise).
8. Mount diffuser on seal plate; tighten screws to 10-14 inch-lbs. (11.5-16.1 cent.-kg.) torque.
9. Assemble motor and seal plate to volute; be sure clamp is properly seated. NOTICE: Clamp knob can
be located in any position around volute; if it is moved after assembly, tighten knob while tapping
around clamp to assist sealing. Do not move clamp while pump is full of water.
Hazardous pressure. Release all pressure from pump and piping system before working on pump
or attempting to adjust or remove clamp. Clamp may blow off of pump if adjusted under pressure.
10. Reinstall pump base mounting bolts (if used) and prime pump according to instructions on Page 9.
Also check there is no play on the motor mount to the back plate.
Did you use lube on the seal where the diffuser slides in to the front housing?
Provided instructions from owners manual. NOTE step 5.
Pump Reassembly/Installing New Seal
1. Ceramic seat must be clean and free of dirt, grease, dust, etc. Wet outer edge of O-Ring with small
amount of liquid detergent; press ceramic seat into seal plate cavity firmly and squarely with finger
pressure (Figure 9).
2. If ceramic seat will not locate properly, remove it, place face up on bench and reclean cavity. Ceramic
seat should now locate.
3. If seat still will not locate properly, place a cardboard washer over the polished face and use a
piece of 3/4" (19mm) standard pipe for pressing purposes.
NOTICE: Be sure not to scratch or mar polished surface or seal will leak.
4. Remount seal plate on motor. Tighten bolts to 60-80 inch-lbs. (69-92 kg/cm) torque.
5. Apply a small amount of liquid detergent to inside diameter of rotating half of seal.
6. Slide rotating seal member, polished face last, over threaded shaft end and shaft shoulder until rubber
drive ring hits shaft shoulder.
NOTICE: Be sure not to nick or scratch polished seal face; seal will leak if face is damaged.
7. Screw impeller onto shaft (clockwise); this will automatically locate seal in seal plate.
NOTICE: On models with impeller screw: install impeller gasket and lock screw (left-hand thread –
turn counterclockwise).
8. Mount diffuser on seal plate; tighten screws to 10-14 inch-lbs. (11.5-16.1 cent.-kg.) torque.
9. Assemble motor and seal plate to volute; be sure clamp is properly seated. NOTICE: Clamp knob can
be located in any position around volute; if it is moved after assembly, tighten knob while tapping
around clamp to assist sealing. Do not move clamp while pump is full of water.
Hazardous pressure. Release all pressure from pump and piping system before working on pump
or attempting to adjust or remove clamp. Clamp may blow off of pump if adjusted under pressure.
10. Reinstall pump base mounting bolts (if used) and prime pump according to instructions on Page 9.
The pump primed OK and it seemed to pump water just fine at both speeds. I'll check for play, but it seemed pretty tight to me. I did lube the o-ring on the diffuser and the one for the main "wet head" (the whole thing that is sealed by the band clamp).
If I did anything wrong, I'm guessing it would be the installation of the seal and the springloaded part. I have the polished parts facing each other. I didn't lube the rubber side of the ceramic seal. The manual mentioned using some liquid detergent, but I didn't see that until I had put it together. I wouldn't think that would cause squeaking.
If I did anything wrong, I'm guessing it would be the installation of the seal and the springloaded part. I have the polished parts facing each other. I didn't lube the rubber side of the ceramic seal. The manual mentioned using some liquid detergent, but I didn't see that until I had put it together. I wouldn't think that would cause squeaking.
As an update, the pump has now run for several hours and does not make the noises, so I'm assuming my initial theory that it was just the ceramic plates adjusting to each other.
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