MYERS S50HTPC1 Manual De Instalación, Operación Y Repuestos página 4

Impeller, Seal, and Capacitor Replacement,
Model S50HTPC1
Risk of electrical shock. Disconnect electri-
cal power before doing any service work on pump!
Refer to assembly drawing on Page 5.
Disassembly
1. Unscrew hex-head cap screws, remove motor assembly
from volute and set it on its side in a clean area.
2. Remove oil plug. Turn pump upside down to drain oil.
3. Hold impeller; remove impeller nut and washer.
4. Unscrew impeller (turn counter-clockwise) for cleaning.
Risk of electric shock. Before touching
capacitor, discharge it by shorting the terminals
together with an amber handled screwdriver.
5. Loosen cord nut and gently pull cord assembly out from
motor cover. Disconnect wires from cord set (wires and
connector are color coded for reassembly).
6. Unfasten socket head screws holding motor cover to seal
plate and remove motor cover.
7. If replacing capacitor, remove wires from capacitor.
Remove capacitor.
8. Remove rotating half of seal off of shaft.
9. Cradle motor assembly so that it stands vertically with
motor shaft extending out of the bottom.
10. Remove through bolts from motor assembly. Remove
motor and shaft from seal plate.
11. Working from back of seal plate, tap primary seal head
out of seal plate; thoroughly clean seat cavity.
Re-assembly
NOTICE: Make sure that seal faces are clean and undam-
aged. Apply Permatex #2 or equivalent sparingly to outside
edge of seal body (with spring) Figure 1.
1. Press new seal body into cavity in seal plate (Figure 1).
Impeller side of seal plate
Permatex
here
1
Figure
2. Reinstall motor and shaft to seal plate using the four
through bolts removed in step 10 under "Disassembly".
NOTICE: Do not overtighten through bolts!
3. Slide new rotating half of seal onto shaft (Figure 2).
Figure 2
4. Reassemble impeller, washer, and impeller nut.
5. Install new capacitor. See below for electrical connec-
6. Inspect O-Ring carefully; replace if damaged. If it is not
7. Reinstall capacitor cover, feeding wire through connector
8. Fill motor with clean dielectric oil (Part No. U197-8A). To
Motor Lead Connections (S50HTP1 only)
Press seal
into cavity
4
NOTICE: Do not nick or scratch the silicon carbide seal
face when passing it over shaft shoulder. Seal faces must
be clean and undamaged or seal may leak.
Slide ceramic
part onto
shaft.
tions to capacitor.
nicked or scratched, clean and reinstall.
NOTICE: It is good practice to replace O-Ring each time
pump is serviced.
hole, then reconnect cord wires to connector. Reference
color code markings.
allow room for expansion, oil level with cold motor should
be about 1/4" (6 mm) above top of motor assembly.
Green
Red
Green
Red
Motor leads
HT7 only
White
Black
White
Black