Class1 118711 - TPG+ Governor - 118710 EXTERNAL - Manual (Page 13)

FORM-ENG-0018 REV A 05-27-03
PAGE 12 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
4.3. Required interlocking
The TPG+ requires interlocks before engine control operations are permitted. The TPG+ provides two interlock
inputs that allow easy separation of pumping operations and throttle/high idle operations through two inputs dedicated
as system interlocks:
THROTTLE READY (pin 2 of the gray Deutsch connector) and PUMP ENGAGED (pin 10 of the
gray Deutsch connector). These interlock inputs are activated when system power is applied (positive polarity).
The OEM is responsible for creating safe and effective interlocking routines.
The TPG+ utilizes back lit text below the switch panel to indicate interlock status.
THROTTLE READY interlock PUMP ENGAGED interlock OKAY TO PUMP
Apply system power to pin 2 of the
gray Deutsch connector (through
OEM interlocking).
THROTTLE READY text illuminates
green. Apply system power to pin 10 of the
gray Deutsch connector (through
OEM interlocking).
PUMP ENGAGED text illuminates
green. When THROTTLE READY and
PUMP ENGAGED interlocks are
applied the OKAY TO PUMP text
illuminates green.
The TPG+ will operate in throttle
mode (RPM) only.
The TPG+ will not operate in any
mode until the THROTTLE READY
interlock is applied. The TPG+ will operate in throttle
mode (RPM) or pressure mode
(PSI).
4.4. PRESET switch operation
The PRESET switch brings the discharge pressure (or engine RPM, in throttle mode) to the configured
preset point (see section 5.2.2 and 5.2.4).
Using the PRESET switch is a method of smoothly and expeditiously attaining water pressure and flow, but it is not
intended to be the initial attack pressure. Attack pressures and flows should be determined by the actual fire status
and manually achieved for best operation.
PRESET is an operational convenience and needs to be considered as a fixed point (higher or lower than the current
point) that can be achieved with a single switch press.
Note: Initiating pumping operations is simplified by bringing the pump to a preset pressure with a single switch press.
Consequently, securing or regaining control operations can be aided by returning to this fixed pressure point with a
single switch press.
4.5. IDLE switch operation
Press and hold the IDLE switch for one second to release engine RPM control back to the engine ECU.
The engine RPM will promptly go to its configured curb idle (see section 5.2.17).
Note: In view of the fact that driveline stress can be induced by quick changes in engine speed, depending on rpm
and torque load, the engine speed is ramped to idle over a short duration to minimize the effect of driveline kick.