Enerpac PR-Series Electric - Handbuch (Seite 9)

9
6.0 MAINTENANCE
6.1 Maintain Oil Level in Hydraulic Reservoir
Check the hydraulic oil level every 30 days. Oil level should be
approximately 1 inch [25 mm] below top of reservoir, with cylinder
fully retracted and motor off.
If oil level is low, add Enerpac HF hydraulic oil as required. If
Enerpac HF is not available at the work site, use an equivalent
hydraulic oil that meets the specifications shown in Table 8.
Table 8 - Oil Specifications
ISO Grade 32
Viscosity Index 100 min
Viscosity at 210 °F 42-45 S.U.S.
Viscosity at 100 °F 150-165 S.U.S.
Viscosity at 0 °F <12000 S.U.S.
API Gravity 31.0-33.0
Flash, C.O.C. °F 400
Pour Point, °F -35
Paraffinic Base Color Blue
IMPORTANT: Failure to use the proper oil may result in damage
to jack hydraulic components and will void the product warranty.
Use of Enerpac HF oil is strongly recommended.
IMPORTANT: Be sure that the oil is clean. If the oil has a milky,
cloudy or dark appearance, it should be changed immediately as
described in Section 6.2.
6.2 Changing the Oil (See Figure 7)
Change the oil at least every 12 months.
Note: The following conditions will require more frequent oil
changes:
• Rigorous duty, where oil temperature may reach 150 °F
[60 °C].
• A high humidity environment and/or extreme changes in
temperature that can result in condensation inside the
reservoir.
• Dirty or dusty environments that may contaminate the oil.
Change the oil as described in the following steps:
1. Be sure that cylinder is fully retracted and that power cord is
disconnected from electrical outlet.
IMPORTANT: The 5 gallon [18,9 liter] hydraulic reservoir holds
approximately 4.2 gallons [15,9 liters] of oil when filled to the
proper level with cylinder fully retracted and motor off. Dispose
of used oil in accordance with all applicable laws and regulations.
2. Loosen and remove oil drain plug at bottom of reservoir.
Allow used oil to drain into a suitable container.
3. Clean and reinstall oil drain plug.
4. Remove, clean and reinstall the reservoir air breather. It is
mounted on the reservoir top cover plate. See Figure 7 for
location.
5. Loosen oil fill plug at top of reservoir. Using a clean funnel,
slowly fill the reservoir until the oil level is about 1 inch [25
mm] below top of reservoir. Use Enerpac HF hydraulic oil or
a suitable equivalent that meets the specifications shown in
Table 8.
6. Reinstall oil fill plug.
7. Remove the old oil filter and replace it with a new one of
the proper specifications. Catch any spilled oil in a suitable
container.
8. Raise and lower the cylinder several times to check for
proper operation before placing the jack back into service.
LOWER
RAISE
Oil Fill
Plug
Oil
Filter
Oil Drain Plug
Reservoir
Air Breather
Figure 7, Oil Change
6.3 Wheels and Tires (See Figure 8)
Every 30 hours of operation:
• Check the tires for wear or damage. Replace as required.
• Check the tire inflation pressure. Each tire should be inflated to
90 psi [6,2 bar].
Every 12 months:
• Lubricate both wheel bearings with a high quality wheel
bearing grease. Each wheel hub contains a grease fitting.
Tire Air
Valve
A
Wheel Bearing
Grease Fitting
Figure 8, Wheel and Tire Maintenance