Issued May 2020
Pumps
Copyright 2020, Heil Environmental
Printed in the U.S.A.
Pumps
38
HYDRAULIC PUMP CONTROL
The pump system consists of a tandem hydraulic pump driven by either a transmission mounted PTO or engine crank shift
(front mount pump). There can be up to three control solenoids in this system Pump #1 (Lift Pump), Pump #2 (Body
Pump) and Hot Shift PTO (if equipped). Each solenoid is individually controlled by a dedicated output from the Cab
Controller.
To enable the hydraulic pump control, the System Power switch must be ON, then press the Pump button on the Joystick
or the Pump rocker switch on the control panel.
A. Hot Shift PTO Solenoid (if equipped)
This solenoid engages the transmission mounted hot shift PTO and will activate under the following conditions.
Condition #1
ON = with Pump Control Enabled AND Vehicle Speed < 15mph to engage.
B. Pump #1 Solenoid (Lift Pump)
This solenoid engages the lift pump and will activate under the following conditions.
Condition #1 (on route operation)
ON = with Pump Control Enabled AND Engine Speed < 900rpm AND Body Hoist Down AND Vehicle Road Speed <
7mph (default) AND Service Brake applied.Condition #2 (stationary operation)
ON = with Pump Control Enabled AND Engine Speed < 900rpm AND Body Hoist Down AND Vehicle Road Speed <
7mph (default) AND Transmission in Neutral
Condition #2 (stationary operation)
ON = with Pump Control Enabled AND Engine Speed < 900rpm AND Body Hoist
Down AND Vehicle Road Speed < 7mph (default) AND Transmission in Neutral
Condition #3 (stow lift on the fly)
ON = Pump Control Enabled AND Body Hoist Down AND Lift Stow Option ON AND (Grabber Closed OR Lift
Extended) AND Grabber Open Button pressed
Condition #4 (service mode)
ON = with Pump Control Enabled AND Engine Speed < 900rpm AND Service Mode ON AND Vehicle Road Speed <
7mph (default) AND Transmission in Neutral
C.Pump #2 Solenoid (Body Pump)
This solenoid engages the body pump and will activate under the following conditions.
Condition #1 (body operation)
ON = with Pump Control Enabled AND Engine Speed < 1500rpm to engage AND Engine Speed < 1800rpm to retain
engagement.
Содержание HEIL LIBERTY TP1L-SM-0520
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Страница 49: ...Issued May 2020 Lift Arm Copyright 2020 Heil Environmental Printed in the U S A Lift Arm 43 SECTION 3 LIFT ARM ...
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