8-4
Valco Cincinnati, Inc.
Section 8 - Troubleshooting and Repair
MM125 - D-90 Hot Melt Unit
Repair
WARNING!
WARNING!
WARNING!
WARNING!
WARNING!
All of these operations should be performed with the
machine switched off at the main breaker and
disconnected from the incoming air, making sure the
system has been duly bled and depressurized.
WARNING!
WARNING!
WARNING!
WARNING!
WARNING!
Make sure the pump is up to temperature.
1.
Turn the pump off.
2.
Set the manifold shutoff valve to the CLOSE position. This will shut
off the adhesive flow to the manifold.
3.
Loosen the (4) M10 screws on the motor bracket.
4.
Slide the motor back as far as possible to gain pump access.
The slide disk from the coupling
should come off. Set it aside while
replacing the pump.
5.
Relieve the glue pressure in the system, if any exists.
6.
Remove the (4) M8 screws holding the pump to the manifold.
WARNING!
WARNING!
WARNING!
WARNING!
WARNING!
Wear heat-resistant gloves and safety glasses.
Even when the adhesive flow has been shut off, residual
adhesive will drip from the manifold. Wear gloves, and
use a rag or towel to clean it off.
7.
Install the new pump to the manifold, in the same orientation as
the old pump. Use NEW O-rings.
8.
Install the slide disk to the pump coupling, with the arrows pointing
toward the roller bearings.
9.
While holding the slide disk in place, slide the gear motor toward
the pump until the motor coupling roller bearings enter the slide
disk.
10. Tighten the M10 screws on the motor bracket.
11. Set the shutoff valve to OPEN.
Replacing the Pump
Summary of Contents for D-90
Page 29: ...4 5 ValcoMelton Section 4 Installation MM125 D 90 Hot Melt Unit Electrical Panel ...
Page 49: ...5 10 Valco Cincinnati Inc Section 5 Setup MM125 D 90 Hot Melt Unit Set Language Continued ...
Page 50: ...5 11 Valco Cincinnati Inc Section 5 Setup MM125 D 90 Hot Melt Unit Set Temperature Units ...
Page 56: ...5 17 Valco Cincinnati Inc Section 5 Setup MM125 D 90 Hot Melt Unit Ready Delay Time Continued ...
Page 73: ...5 34 Valco Cincinnati Inc Section 5 Setup MM125 D 90 Hot Melt Unit Sequential Start Valve ...
Page 146: ...C 2 ValcoMelton Appendix C Schematics MM125 D 90 Hot Melt Unit 240V 3Ø 029XX435 ...
Page 147: ...C 3 ValcoMelton Appendix C Schematics MM125 D 90 Hot Melt Unit 240V 3Ø 029XX435 ...
Page 148: ...C 4 ValcoMelton Appendix C Schematics MM125 D 90 Hot Melt Unit ...
Page 149: ...C 5 ValcoMelton Appendix C Schematics MM125 D 90 Hot Melt Unit ...
Page 150: ...C 6 ValcoMelton Appendix C Schematics MM125 D 90 Hot Melt Unit ...