Emerson Damcos, Service Manual

Page: 88 / 144

Service Manual Damcos LPU: Refill of Oil in LPU
SM 8000-100-01 Ed 04 February 2017
88
Procedures
LPU without pressurised reservoir using direct level control
1. Remove the breather valve, placed on top or bottom of the LPU or end of oil tank, depending on
the LPU mounting direction, see picture on page 87. For LPU-S on BRCF the breather valve might
be placed on top of BRCF.
2. Oil level must be max 15 mm below breather valve or plug in LPU.
For LPU-S on BRCF oil level in LPU tank must be above suction pipe at fully opened actuator.
3. If oil level is low, fill the reservoir with hydraulic oil as specified for the system. Oil filling may be
done directly through the hole for breather valve or with a hand pump.
4. LPU-S hand pump filling: Apply pressure from hand pump directly to T-quick connection of the
LPU. See “LPU-S mounted on BRCF oil filling with hand pump” on page 90
alt.
LPU-D hand pump filling: Open stop valve at front of LPU and apply pressure from hand pump
directly to B-quick connection. Close stop valve after filling. See “LPU-D Oil Filling Instruction
with hand pump” on page 91.
5. Remount the breather valve.
LPU with pressurised reservoir
1. Oil level is controlled by measuring the distance from cap to piston with closed or fully opened
actuator, see drawing next page.
2. If refill is demanded, close the actuator, connect pressure connection from hand pump to T-
quick connection for LPU-S, see “LPU-S mounted on BRCF oil filling with hand pump” on page 90
or to B-quick connection for LPU-D, see “LPU-D Oil Filling Instruction with hand pump” on
page 91.
3. For LPU-D open by-pass valve at front of LPU.
4. Use hand pump to fill the LPU reservoir. For LPU-D close by-pass valve at front of LPU.
5. When recommended oil level is reached, disconnect hand pump and close the cap at the reser-
voir with breather valve.
6. Activate the LPU a few times and control oil level again.