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Series 90 Start-Up 5

The following start-up procedure should always be
followed when starting-up a new Series 90 installa-
tion or when restarting an installation in which either
the pump or motor had been removed.

WARNING
The following procedure may require the ve-
hicle/machine to be disabled (wheels raised off
the ground, work function disconnected, etc.)
while performing the procedure in order to
prevent injury to the technician and bystanders.
Take necessary safety precautions before
moving the vehicle/machine.

Prior to installing the pump and/or motor, inspect the
units for damage incurred during shipping and han-
dling. Make certain all system components (reser-
voir, hoses, valves, fittings, heat exchanger, etc.) are
clean prior to filling with fluid.

Fill the reservoir with recommended hydraulic fluid.
This fluid should be passed through a 10 micron
(nominal, no bypass) filter prior to entering the reser-
voir. The use of contaminated fluid will cause damage
to the components, which may result in unexpected
vehicle/machine movement. See the publications
BLN-9887 and SDF 697581 for further related infor-
mation.

The inlet line leading from the reservoir to the pump
must be filled prior to start-up. Check inlet line for
properly tightened fittings and make sure it is free of
restrictions and air leaks.

Be certain to fill the pump and/or motor housing
with clean hydraulic fluid prior to start up. Fill the
housing by pouring filtered oil into the upper case
drain port.

Install a 50 bar (or 1000 psi) pressure gauge in the
charge pressure gauge port (see

Sec. 4.2

for loca-

tion) to monitor the charge pressure during start-up.

It is recommended that the external control input
signal (linkage for MDC, hydraulic lines for HDC, or

electrical connections for EDC) be disconnected at
the pump control until after initial start-up. This will
ensure that the pump remains in its neutral position.

WARNING
Do not start prime mover unless pump is in
neutral position (0

swashplate angle). Take

precautions to prevent machine movement in
case pump is actuated during initial start up.

“Jog” or slowly rotate prime mover until charge pres-
sure starts to rise. Start the prime mover and run at
the lowest possible RPM until charge pressure has
been established. Excess air may be bled from the
high pressure lines through the high pressure system
gauge port.

Once charge pressure has been established, in-
crease speed to normal operating RPM. Charge
pressure should be as indicated in the pump model
code (see

Sec. 8.1.1

). If charge pressure is inad-

equate, shut down and determine cause for improper
pressure. Refer to Troubleshooting

Sec. 7

WARNING
Inadequate charge pressure will affect the
operator’s ability to control the machine.

Shut down the prime mover and connect the external
control input signal. Also reconnect the machine
function if disconnected earlier. Start the prime mover,
checking to be certain the pump remains in neutral.
With the prime mover at normal operating speed,
slowly check for forward and reverse machine opera-
tion.

Charge pressure may slightly decrease during for-
ward or reverse operation. Continue to cycle slowly
between forward and reverse for at least five minutes.

TSE PTV100/72, Owner'S Manual

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