ASTRO LS10 Series, Руководство пользователя

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8.7 Pump Motor and Pump Shaft Assembly Replacement
1. Disconnect electrical power and allow melt unit to cool to
121 °C (250 °F).
2. Per illustration below, open motor junction box cover [1],
disconnect wiring and liquidtite fitting [2].
3. Remove screws [4] holding motor mounting plate to melt unit.
4. Lift motor assembly off melt unit.
5. Inspect motor shaft coupler [3] for wear. Replace if necessary.
6. If not replacing shaft assembly, skip to Step 8. If replacing
pump shaft assembly or individual shaft assembly parts,
remove bronze spider [6], coupler and key [11 and 12],
washer [7], retaining ring [10], and shaft [8], and shaft
retainer [9].
7. Install new shaft assembly or individual components as
needed.
8. Remove screws [5] holding pump motor to motor mounting
plate [13].
9. Install new pump motor on motor mounting plate.
10. Check pump shaft alignment on pump in tank.
11. Align motor coupling [3] with pump shaft in tank and lower
onto shaft.
12. Align motor mounting plate to melt unit with mounting
screws [4].
13. Verify that pump shaft seats properly with pump, and verify
that coupler clearance [14] of 0.8 mm ±0.3 mm (0.030 in.
±0.010 in.) exists.
14. Replace liquidtite fitting and wires [2].
15. Reconnect wires according to electrical schematic, located in
back of melt unit. Refer to melt unit identification plate to
determine exact voltage.
16. Turn on melt unit and allow melt unit to heat to normal
operating temperature. Turn on pump motor.
17. Tighten screws [4] in a crisscross pattern while motor is
operating to align pump shaft.
18. If replacing complete motor group, also replace pump motor
switch on front panel and motor capacitor inside electrical
enclosure.
30 LS10 and LS20 19600-121
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