Class1 117155 - TPG Governor - 117684 EXTERNAL - Manual (Page 8)

FORM-ENG-0018 REV A 05-27-03
607 NW 27th Ave
Ocala, FL 34475
Ph: 352-629-5020 or 1-800-533-3569
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TECHNICAL DATA SHEET
PAGE
7 OF 26
DATE 3/28/2012
PRODUCT GROUP THROTTLE CONTROL P/N 117155 REV 1.23
PRODUCT TOTAL PRESSURE GOVERNOR (TPG) BY AMS
Manual P/N 117684
3.1. Display
The display shows the pertinent governor information: engine RPM, set pressure, warning and information messages.
3.2. Interlock status indicators
Backlit text indicates the status of the three (3) interlocks: pump engaged, okay to pump, and throttle ready. Throttle
ready and pump engaged are physical inputs into the TPG’s 12 pin connector (pins 2 and 10 respectively). Okay to
pump interlock status can be configured to become active when both the throttle ready and pump engaged interlocks
are present (default) or when the TPG’s pin 4 physical input is active (see section 5.2.34).
3.3. Control switches
The six (6) control switches are color coded and labeled for easy identification.
3.3.1. IDLE
The IDLE switch (red) forces the governor to idle mode (standby). Pressing and holding this button for one second
while in rpm or pressure mode will cause the engine to ramp down to its idle position.
3.3.2. MENU/SILENCE
The MENU/SILENCE switch (blue) is used to silence the alarm, cycle through the display items, and enter the
setup menu.
3.3.3. PRESET
The PRESET switch (orange) sets the governor to the configured preset engine RPM while in throttle mode, or
preset pressure while in pressure mode.
3.3.4. MODE
The MODE switch (green) sets the governor to either throttle mode (RPM) or pressure mode (PSI). The correct
interlocks must be present for the system to begin governor operation: throttle ready for RPM mode, throttle ready,
pump engaged, and okay to pump for PSI mode.
3.3.5. INC
The INC [increase] switch (yellow) is used to increase the engine RPM or pressure set point.
3.3.6. DEC
The DEC [decrease] switch (yellow) is used to decrease the engine RPM or pressure set point.
3.4. Mode indicator
The mode indicator consists of two (2) LEDs to show the governor’s current operating mode. The PSI LED (yellow)
indicates the governor is operating in pressure mode and the RPM LED (blue) indicates the governor is operating in
throttle mode. When both LEDs are OFF the governor is in idle mode (standby).