5
Retighten the lock nut after adjustment.
2. When the pressure relief valve has been adjusted correctly, the working pressure
must be set at 100 bar by means of the valve on the test equipment. At 100 bar,
the oil flow should be 20 l. p.m.
If the oil flow is not correct, loosen the POR cylinder in the bracket and push it to
the left (higher flow) or to the right (lower flow).
Secure the POR cylinder in the bracket again after adjustment.
Oil Types
The HYCON power packs use standard hydraulic oil, i.e. all types of mineral oil and
biodegradable oil, which comply with the following values:
Ambient temperature range
Below 10°C
50°F
10 … 30°C
50 … 86°F
Above 30°C
86°F
Recommended oil viscosity grade
VG 32
VG 46
VG 68
Recommended oil cleanliness
ISO 4406 /19/16 / NAS 1638 10
Permitted viscosity
cSt
10 – 600
Viscosity index
Minimum
100
Oil temperature area
°C /°F
-20 to 70 / -4 to 158
If correct pressure/oil flow cannot be achieved by following the
above instructions, the powerpack must be re-adjusted. If the
pressure/oil flow is then still incorrect, the pump is defect and
must be replaced.
