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5-44
Valco Cincinnati, Inc.
Section 5 – Setup
MM125 - D-90 Hot Melt Unit
To adjust the single-stage relief valve, follow these steps:
CAUTION!
CAUTION!
CAUTION!
CAUTION!
CAUTION!
Do not overtighten adjusting screw. Otherwise,
equipment damage could occur.
1.
Turn the pump motor off.
2.
Loosen the locknut on the pressure relief valve.
The physical location of these pressure
relief valves may be reversed in some
units.
3.
Turn adjustment screw clockwise to increase pressure,
counterclockwise to decrease pressure.
4.
Tighten the locknut on the
pressure relief valve.
5.
Turn on pump motor and resume operation.
Adjusting the
Pressure
Control Valve
Adjusting the Single-
Stage Relief Valve
The D-90 unit contains a single-stage, external, manually adjustable relief
valve (see figure below). Additionally, the D-90 unit can use an optional
pneumatic relief valve, Uniflow 12 and Uniflow 24V (contact Valco Melton for
details).
The single-stage relief valve is a simple safety device which protects the
system from excessive pressure. The single-stage relief valve is commonly
used for systems that are applying adhesive continuously (laminating).
WARNING!
WARNING!
WARNING!
WARNING!
WARNING!
Do not adjust the fixed pressure relief valve. This
protects the system from excessive pressure buildup.
Otherwise, serious personal injury or equipment damage
could occur.
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 ...