Marshalltown SG87SH SURFACE SHARK Floor Grinder - Manual (Page 35)

SG87Sh SuRFACE ShARK FLooR GRINDER PAGE 35
Improper voltage selection. Determine the available
voltage value from the power source. Determine
the power source voltage meets the nameplate
requirements of the electric motor.
Floor Grinder and/or extension cord is not plugged
into the power source. Determine that all electrical
connections have been properly made. The NEMA
6-20 Series cap and receptacle set is of a twist lock
configuration and requires a twist motion to ensure a
proper connection.
Improper extension cord size and capacity. operate
the Floor Grinder with copper stranded, 8 AWG or
larger extension cords. Improper extension cord size
and capacity will result in significant heat rise and
corresponding voltage and amperage drop.
Thermal protection device activated. To protect the
motor against heat related damage, an automatic
thermal protection switch is provided. high operating
temperatures will activate the switch and shut the
motor off. After the motor has cooled to an acceptable
temperature level, depress the switch to restart.
Circuit breaker activated. Push to reactivate the breaker
located on the operator handle near the oN/oFF
master switch.MoToR LoSES PoWER
Improper extension cord size and capacity. Replace
with cords meeting the required specifications.
Excessive extension cord length. Even with proper
extension cord size and capacity, excessive cord length
can reduce the available voltage and amperage to the
motor. Measure the available voltage to the motor
where the extension cord connects to the Floor Grinder
with a voltmeter. Reduce the extension cord length as
required to achieve the minimum voltage operating
specification as required by the motor manufacturer.
Insufficient available voltage and amperage at the
power source. Measure the available voltage at the
power source (usually a receptacle) with a voltmeter. If
the available voltage is below the minimum operating
specification as required by the motor manufacturer,
utilize an alternative power source.
Improper motor cooling. See ELECTRIC MoToR
SERvICE.
Excessive load to the motor. See oPERATING ThE
FLooR GRINDER oN ThE Job SITE.
OPERATIONAL PROBLEMS
Application: SG87SH SURFACE SHARK
uNEvEN MuLTI-ACCESSoRy ATTAChMENT
WEAR
Incorrect installation of the attachment in the aluminum
disc. See INSTALLING A MULTI-ACCESSORY
ATTACHMENT (not including the multi-segmented,
dry diamond disc) IN THE ALUMINUM DISC.
Worn or damaged gimbal head Lord® rubber mounts.
Replace mounts.
Accumulation of foreign material on the multi-accessory
attachment. Clean and/or replace the attachment
components as necessary.
Flails and spacer washers are mounted too tight on the
scarifier frame. Remove and/or replace flails and spacer
washers. See MULTI-ACCESSORY ATTACHMENTS
AND APPLICATIONS.
EXCESSIvE JuMPING oN ThE WoRK SuRFACE
Incorrect installation of the attachment in the
aluminum counterrotating disc. See INSTALLING
A MULTI- ACCESSORY ATTACHMENT (not
including the multi-segmented, dry diamond disc)
IN THE ALUMINUM DISC.
Worn or damaged gimbal head Lord® rubber mounts.
Replace mounts.
Loose gimbal head fasteners. Retorque fasteners as
required.
ACCELERATED v-bELT WEAR
Misaligned and/or improperly tensioned pulleys.
Readjust pulleys and v-belt. See CHECKING V-BELT
TENSION AND ALIGNMENT.
Worn pulleys. Replace pulleys as required. See
INSTALLING A REPLACEMENT V-BELT OR
PULLEY.
Improper v-belt. Replace with a name brand b45
series v-belt. See INSTALLING A REPLACEMENT
V-BELT OR PULLEY.