Nexen HGP25 969053 - Manual (Page 14)

FORM NO. L-21277-B-1213 14
DISENGAGING AND REMOVAL OF THE HGP
HGP OPERATION
DANGER
This product has moving parts that
can crush or cut appendages. Provide
adequate spacing or guarding from any
operating product.
WARNING
Use appropriate guarding for rotating
components. Failure to guard could
result in serious bodily injury.
WARNING
Ensure proper guarding of the product is
used. Nexen recommends the machine builder
design guarding in compliance with OSHA 29
CFR 1910 “Occupational Safety and Health
Hazards”.
WARNING
Never exceed maximum operating
speeds listed for your product. (See
Table 5).
TABLE 5
Geared Pinion Maximum Speeds
Product / Ratio Motor RPM Pinion RPM
HGP17 / 50:1 7300 146
HGP17 / 80:1 7300 91
HGP17 / 100:1 7300 73
HGP17 / 120:1 7300 61
HGP25 / 50:1 5600 112
HGP25 / 80:1 5600 70
HGP25 / 100:1 5600 56
HGP25 / 120:1 5600 47
1. De-couple the load from the RPS carriage.
2. Disconnect the power source, ensuring that no torque
can be applied to the HGP.
3. Remove pinion preload by loosening the preload
mechanism lockdown fasteners slightly and then
turning the preload application screw(s) (or other
preload device specific to your preloading system)
to remove the pinion preload. At this time the pinion
should separate slightly from the rack teeth.
4. The HGP can then be completely disengaged from
the rack, following the reverse order of steps taken to
attain initial engagement as described in the GEARED
PINION INSTALLATION section.
5. The motor/HGP/preload mechanism assembly can
then be disassembled from the machine, following
the reverse order of assembly steps.
6. If the motor is to be disassembled from the HGP, it will
be necessary to direct a flashlight beam into the clamp
collar access hole in order to align the clamp collar
screw so that the hex key can easily be re-engaged to
loosen it. The HGP will need to be slowly backdriven
so that the input rotates to achieve this alignment.
WARNING
Failure to properly support the load
before disengaging the RPS could
cause serious harm to operators or
equipment.