Technical data
SolutionCauseProblem
Check output with flow and pressure testerNo flow from supplyLPD fails to operate
Check that pressure feed is connected to P
port on the LPD
Hoses incorrectly fitted
Remove and check, clean all associated
parts
Main spool jammed or damaged
Remove and check for damage and seizing
marks
Striker piston seized
Check main relief valve and flowInsufficient available pressureLPD lacks striking power
Re-charge the accumulator, see service
manual
Low accumulator gas pressure (Normally
associated with violent shaking of hoses)
Check that the flow rate is correctInsufficient flowLPD runs slow
Warm up the oil supply, optimum
temperature 30–70°C (86–158°F)
Cold oil
Check return line back-pressure, pressure
must not exceed 10 bar
High return line back pressure
Use only Hydraulic Oil according to specIncorrect oil
Locate and replace defect couplingQuick release coupling defect
Check oil supply has adequate cooling,
temperature must not exceed 80°C (176°F)
Inadequate cooling of hydraulic oilLPD runs hot
Machine data
LPD T, RV
31 (68)LPD w/built-in valve: Weight kg (lb)
29 (64)LPD w/remote valve: Weight kg (lb)
28-40 lpmOil flow
105-140 bar (1520-2030 psi)Working pressure
25 bar (362 psi)Maximum back pressure in return line, measured at post driver
30-70ºC (86-158ºF)Hydraulic oil working temperature
50 bar (720 psi)High-pressure accumulator charging pressure, nitrogen
172 bar (2495 psi)Maximum pressure relief valve setting
28 Hz (1680 blows/min)Blow frequency at 30 lpm
Impact energy
Standard ½ in. BSP (alternatively ¾ in. JIC)Connections P and T
Approximatly 2 kWRequired cooling capacity, in case of alternative power source
Oil flow range setting
The post driver is factory set to work on 30 lpm (ETHMA D). In case there is a need the post driver can be
adjusted to work on 40 lpm. In order to do this the nipple on the T-port of the valvehousing must be replaced
with another nipple with restrictor inside. For the optional nipples, see the Spare parts list. The needed nipples
for this setting are not supplied with the post driver, they have to be ordered separately.
Noise and vibration declaration statement
Guaranteed sound power level Lw according to EN ISO 3744 in accordance with directive 2000/14/EC.
Sound pressure level Lp according to EN ISO 11201, EN 500-4:2011.
Vibration value determined according to EN 500-4:2011. See table ”Noise and vibration data” for the values
etc.
17© 2015 Construction Tools EOOD | No. 3392 5036 01f | 2015-03-10
Original instructions
Safety and operating instructionsLPD T, RV
To Next Page
Loading...
Need help?
General
