Class1 118711 - TPG+ Governor - 118710 EXTERNAL - Manual (Page 11)

FORM-ENG-0018 REV A 05-27-03
PAGE 10 OF 30
TECHNICAL DATA SHEET
DATE 4/9/2009
PRODUCT GROUP THROTTLE CONTROL P/N 118710 REV 1.00
607 NW 27th Ave
Ocala, FL 34475
Ph: 352-629-5020 or 1-800-533-3569
Fax : 352-629-2902 or 1-800-520-3473 PRODUCT TOTAL PRESSURE GOVERNOR PLUS (TPG+) BY AMS
Manual P/N 118711
4.2. Operating mode selection
The TPG+ has two operating modes: throttle mode (RPM) and pressure mode (PSI).
Press the MODE switch to select an operating mode. An operating mode will only be activated if the
required interlock(s) are in place (see section 4.3).
There is no variation in engine RPM or pump pressure when changing between throttle mode and pressure mode.
Pressure mode is the desired operating mode because it offers protection from pressure changes that could
injure personnel.
4.2.1. Throttle mode
Throttle mode (RPM) maintains a set engine RPM and will not deviate until the operator changes the RPM with
the control switches on the TPG+.
(Proper interlocking is required for normal operation – refer to Required Interlocking
section 4.3)
Throttle mode is typically used when…
• priming the pump
• connected to a stand pipe
• the water supply pressure stability is questionable
• acting as a relay pumper
Press the MODE switch to select throttle mode. The display will
momentarily show “GOV=THROTTLE” and the RPM mode
indicator LED will illuminate blue.
Press the INC switch to increase or the DEC switch to decrease
the engine RPM set point.
Press the PRESET switch to set the engine speed to the
configured preset RPM - as long as the pump pressure is less
than 10 PSI (see section 4.4).
Configure the
throttle mode preset through the Setup Menu (see
section 5.2.1).
Press the IDLE switch at any time to set the TPG+ back to
standby. The display will momentarily show “IDLE” and both
mode indicator LEDs will be off (see section 4.5).