Installation & Service Instructions:
IS-SC105
SC75 & SC105 Soft Start Valve
ISSUED: September, 2008
Supersedes: April, 1999
Doc.# ISSC105, EN# 080510, Rev.2
Introduction
Follow these instructions when installing, operating, or servicing
the product.
Application Limits
These products are intended for use in general-purpose
compressed air systems only.
Operating Pressure:
kPa
PSIG
bar
Maximum Inlet Pressure
1035
150
4.0
Minimum Inlet Pressure
210
30
2.0
Ambient Temperature Range:
4°C to 54°C (40°F to 130°F)
Voltage Range:
Rated V10%, -15%
Pneumatic Division
Richland, Michigan 49083
269-629-5000
!
WARNING
To avoid unpredictable system behavior that can cause personal injury and
property damage:
• Disconnect electrical supply (when necessary) before installation,
servicing, or conversion.
• Disconnect air supply and depressurize all air lines connected to this
product before installation, servicing, or conversion.
• Operate within the manufacturer’s specified pressure, temperature, and
other conditions listed in these instructions.
• Medium must be moisture-free if ambient temperature is below
freezing.
• Service according to procedures listed in these instructions.
• Installation, service, and conversion of these products must be
performed by knowledgeable personnel who understand how
pneumatic products are to be applied.
• After installation, servicing, or conversion, air and electrical supplies
(when necessary) should be connected and the product tested for proper
function and leakage. If audible leakage is present, or the product does
not operate properly, do not put into use.
• Warnings and specifications on the product should not be covered by
paint, etc. If masking is not possible, contact your local representative
for replacement labels.
!
Safety Guide
For more complete information on recommended application guidelines,
see the Safety Guide section of Pneumatic Division catalogs or
you can download the Pneumatic Division Safety Guide at:
www.parker.com/safety
WARNING
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE
PRODUCTS AND/OR SYSTEMS DESCRIBED HEREIN OR RELATED ITEMS
CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE.
This document and other information from The Company, its subsidiaries
and authorized distributors provide product and/or system options for further
investigation by users having technical expertise. It is important that you analyze
all aspects of your application, including consequences of any failure and review
the information concerning the product or systems in the current product catalog.
Due to the variety of operating conditions and applications for these products
or systems, the user, through its own analysis and testing, is solely responsible
for making the final selection of the products and systems and assuring that all
performance, safety and warning requirements of the application are met.
The products described herein, including without limitation, product features,
specifications, designs, availability and pricing, are subject to change by The
Company and its subsidiaries at any time without notice.
EXTRA COPIES OF THESE INSTRUCTIONS ARE AVAILABLE FOR INCLUSION
IN EQUIPMENT / MAINTENANCE MANUALS THAT UTILIZE THESE PRODUCTS.
CONTACT YOUR LOCAL REPRESENTATIVE.
!
ANSI Symbol
Installation
The Soft Start valve replaces an ordinary main valve; therefore,
it is usually mounted between the air preparation unit and the
system. The Soft Start valve is specifically designed to mount
directly in line with the SC75 / SC105 Series Qube Modular Air
Preparation Units.
SC75 or SC105 valves should be installed with reasonable
accessibility for service whenever possible. Keep pipe or tubing
lengths to a minimum with inside clean and free of dirt and chips.
Pipe joint compound should be used sparingly and applied only
to the male pipe — never into the female port. Do not use PTFE
tape to seal pipe joints — pieces have a tendency to break off
and lodge inside the unit, possibly causing malfunction. Care
should be taken to avoid undue strain on the valve.
Air applied to the valve must be filtered with a 40 micron filter to
realize maximum component life.
Factory Pre-Lubrication
- SC75 valves are pre-lubricated
at assembly with a petroleum based grease which has a PTFE
content. SC105 valves are pre-lubricated at assembly with a
synthetic based grease.
CAUTION: Do not restrict the inlet of valves having an
internal pilot supply. Pressure supply piping must be
the same size as the inlet port or larger to insure that
the pilot valve receives sufficient pressure supply during
high flow conditions.
CAUTION
Do not restrict the inlet of valves having an internal pilot
supply. Pressure supply piping must be the same size as the inlet
port or larger to insure that the pilot valve receives sufficient
pressure supply during high flow conditions.
!
CAUTION
Do not use synthetic, reconstituted,
or oils with an alcohol content or detergent additive.
!
2
3
1
12
2
3
1
For Solenoid
Operated Valves
For Externally
Piloted Valves
