MTS Model 293-22 Hydraulic Service Manifold - Manual (Page 42)

Description Item
Pilot Filter Indicator 2 6
A pop-up indicator is activated when the pilot pressure filter element becomes
dirty.
Pressure Gage 7
A liquid-filled, constant-read pressure gage is connected directly to the output
pressure line. A small orifice protects it against damage from rapid pressure
changes. For single-channel operation, the pressure gage is located on the main
manifold. For multichannel operation, each control manifold contains a pressure
gage.
Low Pressure Adjustment 8
A variable orifice is used to set the output pressure of the HSM in the low-pressure
mode For single-channel operation, the low-pressure adjustment is located on
the main manifold. For multichannel operation, each control manifold contains a
low-pressure adjustment.
Control Manifold Single Channel 9
Setting Low Pressure
The pressure delivered in high-pressure mode is determined by the HPU output pressure. Refer to the
operation section of the appropriate HPU manual for instructions on setting this level. In low-pressure
mode, the pressure delivered is determined by the setting of the low-pressure adjustment in the HSM.
Refer to the appropriate section for the location of the low-pressure adjustment. The setting can be changed
by using the following procedure.
1. Turn the HPU to low pressure.
2. Turn the HPU to high pressure.
3. Activate the HSM in low-pressure mode. Use the HSM pressure gage to check the present low-pressure
setting.
4. While holding the setting of the low-pressure adjustment with a hex key, turn the locking nut 1/2 turn
counterclockwise.
5. Set the pressure to the desired level, as registered on the gage. Clockwise rotation increases pressure.
6. While holding the setting of the low-pressure adjustment with the hex key, tighten the locking nut 1/2
turn clockwise.
7. Check the pressure at the gage. If necessary, repeat Steps 4 through 6 to improve the accuracy of the
setting.
2 If you start the pump and hydraulic fluid is cold, the filter indicator may pop out. When this happens: allow
the fluid to warm up, press the filter indicator, and replace the filter element only if the indicator pops out
again.
42 | Model 293.22 Hydraulic Service Manifold
Operation