GLASS DRILL INSTRUCTION MANUAL
PRODUCT MANUAL
crlaurence.com
C.R. Laurence Co., Inc.
•
2503 E. Vernon Ave., Los Angeles, CA 90058
•
1.800.421.6144
•
crlaurence.com
NOVEMBER 2020
P. 21
8 REPAIR AND REPLACEMENT (CONT.)
8.4 Pump Motor Replacement
1. Disconnect electrical power and allow melt unit to cool to 121 °C (250 °F).
2. Open motor junction box cover [1], disconnect wiring and liquidate fitting [2]. See illustration below.
3. Remove screws [3] holding motor mounting plate to melt unit.
4. Lift motor mount assembly off melt unit. Ensure pump shaft remains connected to pump in tank.
5. Remove screws [6] holding pump motor to motor mounting plate [5].
6. Install new pump motor on motor mounting plate.
7. Check pump shaft alignment on pump in tank.
8. Align motor coupling [4] with pump shaft in tank and lower onto shaft.
9. Align motor mounting plate to melt unit with mounting screws [3].
10. Verify pump shaft seats properly with pump and verify sufficient coupler clearance [7] exists 0.8 mm ± 0.3 mm
(0.030 in. ±0.010 in.). See illustration below.
11. Replace liquidate fitting and wires.
12. Reconnect wires according to electrical schematic. Refer to melt unit identification plate to determine exact voltage.
13. Turn melt unit on allow melt unit to heat up to normal operating temperature, turn pump motor on.
14. Tighten screws [3] in a crisscross pattern while motor is operating to align pump shaft.
SS96 Hot Melt Unit 19600-135 Rev. B 10/26/00
23
8.4 Pump Motor Replacement
1.
Disconnect electrical power and allow melt unit to cool to
121 °C (250 °F).
2.
Open motor junction box cover [1], disconnect wiring and
liquidtite fitting [2]. See illustration below.
3.
Remove screws [3] holding motor mounting plate to melt unit.
4.
Lift motor mount assembly off melt unit. Ensure pump shaft
remains connected to pump in tank.
5.
Remove screws [6] holding pump motor to motor mounting
plate [5].
6.
Install new pump motor on motor mounting plate.
7.
Check pump shaft alignment on pump in tank.
8.
Align motor coupling [4] with pump shaft in tank and lower
onto shaft.
9.
Align motor mounting plate to melt unit with mounting
screws [3].
10. Verify pump shaft seats properly with pump and verify
sufficient coupler clearance [7] exists 0.8 mm ± 0.3 mm
(0.030 in. ±0.010 in.). See illustration below.
11. Replace liquidtite fitting and wires.
12. Reconnect wires according to electrical schematic. Refer to
melt unit identification plate to determine exact voltage.
13. Turn melt unit on allow melt unit to heat up to normal
operating temperature, turn pump motor on.
14. Tighten screws [3] in a crisscross pattern while motor is
operating to align pump shaft.
2
3
7
5
6
1
3
4
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