Graco VPM 12, Instructions Manual

Page: 27 / 88

Setup
313875J 27
Adjust Motor Control Module Selector Switch
The Motor Control Module uses an 8-position selector
switch (S) to set system maximum working pressure.
See F
IG
. 13.
The system can be configured to run in two pressure
ranges:
• 0-3000 psi (0-20.7 MPa, 0-207 bar): For systems
with all components rated to 3000 psi maximum
working pressure or higher.
• 0-2000 psi (0-13.8 MPa, 0-138 bar): For systems
with one or more component rated less than
3000 psi maximum working pressure. For example,
if the hoses are rated to 2500 psi, then the
0-2000 psi range must be used.
See the following table for MCM selector switch (S) posi-
tion setting for each maximum working pressure.
The factory setting for the Motor Control Module selector
switch is 2000 psi if the machine is shipped with no
hoses or hoses rated to 2000 psi maximum working
pressure. If the machine is shipped with hoses rated to
3000 psi maximum working pressure or higher then the
factory setting for the selector switch is 3000 psi.
The selector switch position will be properly set at the
factory for new systems. When a motor control module
is replaced, the selector switch must be set to the cor-
rect setting by the user prior to initial startup.
To change the maximum working pressure rating of the
system in the field, all outlet components including
hoses and dispense valve must be rated at or above the
new system maximum working pressure rating. For
example, if the new system rating will be 3000 psi, all
system components must be rated to at least 3000 psi
maximum working pressure.
To set the Motor Control Module selector switch:
1. Turn machine power off.
2. Remove the access cover (D). See F
IG
. 13.
3. Set the selector switch (S).
4. Install access cover (D).
NOTICE
If the Motor Control Module is replaced, the selector
switch must be set prior to initial startup of the
Motor Control Module or damage may occur.
MCM
Switch Position
2000 psi MWP 3000 psi MWP
B (Blue) 1 3
A (Red) 2 4
• Do not install components rated to less than the
highest pressure in the selected pressure range.
For example, if the 0-2000 psi range is selected do
not install items rated less than 2000 psi. If the
0-3000 psi range is selected do not install items
rated less than 3000 psi. Doing so may lead to
overpressurization and ruptured components.
• High-pressure fluid from ruptured components will
pierce skin. This may look like just a cut, but it is a
serious injury that can result in amputation. Get
immediate surgical treatment.
F
IG
. 13
257396_3B9905_04b
D
S