Samuel Strapping Systems P-625, Safety, Operation, Maintenance And Parts Manual, Page: 5 / 54

5
INTRODUCTION
This manual contains safety, operating
and maintenance instruction for the P-
625 and P-725 Semi-automatic Power
Strapping Machines. These models are
designed to strap packages with
Polypropylene Strap 1/4” to 5/8” (6mm
to 15mm) wide. The strap ends are
joined by means of ‘Hot-Knife’ welding
process.
MAJOR COMPONENTS
In figures 1 through 4, the major
components of the machine and the
strapping head are shown in detail. A
detailed description of additional
systems and specific components are
as follows:
STRAP DISPENSER:
The dispenser supplies strapping
material to the strapping head. It is
located inside the cabinet on the lower
left-hand side. A friction brake is
provided to limit over-run of strap.
1. GRIP – The grip holds the lead end of
the strap beneath the anvil while the
remainder of the strap is being
tensioned around the package.
2. STRAP FEED AND TENSION – Both
feed and tension are achieved by two
sets of gear rollers powered by an
electric motor by means of a drive-
belt and slip-clutch system.
An operator controlled adjustable
timer controls the duration of strap
feed. When the set time for feed is
up, the timer stops feeding strap. If
additional feed is required beyond
that determined by the timer setting,
jog feed will be facilitated by pushing
the ‘Jog Feed’ button on the
operator’s control panel.
3. WELDING AND CUT-OFF – Welding
of the strap ends and cutting of the
strap supply are facilitated in this
process.
4. PACKAGE RELEASE – After a
short weld-cool period (necessary to
avoid welded ends from popping
open) the package is released.
(Note:) The previously mentioned
functions of 1, 3 and 4 are driven by a
cam shaft coupled to the drive system
by means of electromagnetic clutch
which turns one full revolution per cycle.
HOT KNIFE. The ‘Hot Knife’ is centrally
located at the front of the strapping
head. Movement of the knife is
controlled by a cam.
ELECTRICAL SYSTEM. An all new
electrical system using solid state
technology supplies continual power
supply to the electrical components
within the machine. Using simple to
insert circuit boards provides for safe
and fast maintenance free operation.
OPERATOR CONTROLS. The
Electrical Control panel consists of the
‘Main Power ON-OFF Switch,’ ‘Feed
Length Timer,’ ‘Reset Switch’ and ‘Feed
Length Switch’ (Jog Feed) and Electric
Tension Control (on P-625E & P-725E
versions).