Service Manifold Manual

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.
8. Turn off the system.
44 | Model 293.32 Hydraulic Service Manifold
Operation