ZGG81 User
Manual ◄ 11
PREPARATION FOR INITIAL USE
Each unit, as shipped, has no special unpacking or
assembly requirements prior to usage. Inspection to
assure the unit was not damaged in shipping and does
not contain packing debris is all that is required. After
installation of a grinding wheel a unit may be put to use.
CHECK HYDRAULIC POWER SOURCE
1.
Using a calibrated flowmeter and pressure gauge,
check that the hydraulic power source develops
a flow of 7–10 GPM/26–38 LPM at 1500–2000
psi/105–140 bar.
2.
Make certain the hydraulic power source is equipped
with a relief valve set to open at 2100–2250 psi/145–
155 bar minimum.
3. Check that the hydraulic circuit matches the tool for
open-center (OC) operation.
CHECK TOOL
1.
Make sure all tool accessories are correctly installed.
Failure to install tool accessories properly can result
in damage to the tool or personal injury.
2.
There should be no signs of leaks.
3. The tool should be clean, with all fittings and
fasteners tight.
CHECK TRIGGER MECHANISM
1.
Check that the trigger operates smoothly and is free
to travel between the
ON
and
OFF
positions.
CHECK GUARD ASSEMBLY
1.
Inspect the wheel guard assembly for cracks and
other structural damage. Do not use a damaged
guard assembly. Do not use this tool if the guard
has been removed.
INSTALLING AND REMOVING GRINDING
WHEELS
Read and understand the sections titled Safety
Precautions, Tool Stickers And Tags, Hydraulic
Hose Requirements, Hydraulic Requirements, And
Preparation Procedures, before using this product.
NOTE: Use 8 inch by 1 inch thick (Type 1) grinding
wheels with a 5/8 arbor hole. Only use grinding
wheels which comply with ANSI B7.1/ISO 525, 603.
1.
Remove the 3 capscrews and remove the guard
front plate and set aside.
2.
Depress the push lock to lock the spindle. Unscrew
the jam nut. Remove the outside flange.
3. Make sure blotters or labels remain on the grinding
wheel. Install the grinding wheel onto the spindle
and reinstall the outside flange and jam nut.
4.
Depress the push lock and tighten the jam nut. Only
tighten sufficiently to prevent slippage of the wheel
between the flanges.
5. Reinstall the guard front plate and capscrews.
CONNECT HOSES
1.
Wipe all hose couplers with a clean, lint-free cloth
before making connections.
2.
Connect the hoses from the hydraulic power source
to the hose couplers on the grinder. Connect the
return hose first and disconnect it last to minimize
trapped pressure within the grinder motor.
3. Observe flow indicators stamped on hose couplers
to be sure that oil will flow in the proper direction.
The female coupler is the inlet coupler.
NOTE: The pressure increase in uncoupled hoses
left in the sun may result in making them difficult to
connect. When possible, connect the free ends of
the operating hoses together, when not in use.
OPERATING PROCEDURES
1. Observe all safety precautions.
2.
Always start the grinder with the grinding wheel
away from the work surface.
OPERATION
