6
918 series Powerig Hydraulic Units (HK786)
Preparation for Use
NOTE: Electric current and PULL and RETURN pressure
requirements must be understood before preparing
these Powerig® Hydraulic Units for rst-time use. Set
PULL and RETURN pressures for each tool according to
tool instruction manual. Electric current to be used:
440 volts, 60 Hz, 3 phase; or
550 volts, 60 Hz, 3 phase; or
380 volts, 50 Hz, 3 phase.
GOOD SERVICE PRACTICES
The introduction of foreign material into the hydraulic
system will result in poor performance and repair down time.
To avoid this, observe the following good service practices:
1. Clean area around reservoir ller cap before removing it.
2. When adding hydraulic uid to the reservoir, use a clean
funnel and lter the uid with a 10 micron lter.
3. Do not let hose ttings and couplers lay on or drag
around on a dirty oor, or on the ground.
FIRST TIME STARTUP
1. Check that drain plug and hydraulic uid beater port
plugs are tight.
2. Fill reservoir with hydraulic uid (approximately 22
gallons) until uid level is in middle of uid level gauge.
3. Remove plastic shipping plugs from PULL and RETURN
pressure ports of TOOL 1, TOOL 2, (and for 918-5: TOOL 3).
4. Connect installation tools.
5. Remove POWERIG Hydraulic Unit hood.
6. Remove pipe plug in service tee in suction line. Use 5/8
inch hex key, P/N 504249.
7. Turn fan by hand to prime pump. Add uid until pump is
lled level with top of service tee. Reassemble pipe plug.
Use TEFLON stick type thread compound.
220*, 380, 440* OR 550 VOLT, 3PHASE OPERATION
1. Turn disconnect switch to OFF (see WARNING above) and
open covers or electrical control panel. See Figure 12.
2. Bring 220, 380, 440 or 350 volt, three-phase input cable (4
conductors) into disconnect compartment through hole
in front of panel and secure with connector furnished.
3. Remove line shield.
4. Connect power cable leads to terminals L1, L2, and L3.
Replace line shield.
5. Connect ground wire (green) to ground terminal
provided. Tighten nut on ground connection securely.
6. Close covers of electrical control panel.
7. Connect power cable to input power source.
8. Turn disconnect switch to ON and push START button.
9. Check that motor rotation is in the same direction as
arrow on motor cover. To reverse rotation, disconnect
power cable from power source, turn disconnect switch
to OFF and open covers. Remove line shield. Change
position of any two wires connected to terminals L1, L2, or
L3. Replace line shield. Close covers. Connect power cable
to power source. Turn disconnect switch to ON and push
START button.
10.Let hydraulic unit operate for approximately ve minutes
to remove air from hydraulic uid circuit. Check for leaks.
11.Push STOP button.
12.Check uid level and add hydraulic uid if necessary.
13. Reinstall hood.
14.Check output pressures. See Checking & Adjusting
Pressures section of this manual.
REGULAR USE BEFORE EACH OPERATION
1 Check hydraulic uid level in reservoir and add hydraulic
uid as required. Whenever hydraulic uid is added, it
must be ltered by a 10-micron lter.
2. Never operate unit without hood in place.
3. Inspect hoses for any damage, and replace as required.
4. Check and correct any leaks.
5. Connect power cable to power source compatible with
internal wiring of unit.
CONNECTING INSTALLATION TOOLS TO POWERIG
Figure 6 shows a typical hose and control cord hook-up Hose
and cord kits for connecting Installation Tools to the unit
are shown in the KitS and accESSoriES section of this manual.
Be sure that hose from port P of tool is connected to PULL
pressure port on POWERIG Hydraulic Unit, and hose for port
R of tool is connected to RETURN pressure port of unit.
WARNINGS:
Only a qualied electrician is to install the
power cable, according to local electrical
codes, and service the electrical control and
disconnect panel.
ALWAYS CONNECT PRIMARY POWER
SOURCE FROM HYDRAULIC UNIT WHEN
ANY MAINTENANCE IS PERFORMED ON
UNIT, including opening any panels or
access doors. SEVERE ELECTRICAL BURNS
and/or ELECTROCUTION MAY RESULT IF
THIS PRECAUTION IS NOT TAKEN. Other
severe injuries may occur from mechanical
components such as the fan if motor starts
up.
See PULL and RETURN pressures listed in
applicable tool instruction manual. Improper
settings of PULL and RETURN pressures
could cause violent rupture of the system or
tool. Fatal or severe injury from exploding
components/hydraulic uid could occur to
anyone in the immediate vicinity.
CAUTIONS:
Always prime pump after lling reservoir.
Do not use TEFLON®tape on pipe threads.
Tape can shred and break free into uid
lines, resulting in malfunctions. Apply Parker
Threadmate, Loctite 567, or Slic-tite stick
to male pipe threads per manufacturer’s
instructions.
