background image

PREFACE 

 

 

 

 

 

 

 

 

 

 

WARNING

 

GENERAL INSTRUCTIONS 

 

 

Read and follow ALL instructions before using 
this equipment.  

Described herein are some, BUT NOT ALL, of the major 
requirements for safe and productive use of blast 
machines, remote control systems, operator respirator 
assemblies, and related accessories. Completely read ALL 
instruction manuals prior to using equipment. 

 

Failure to comply with ALL instructions can result 
in serious injury or death. 

 

In the event that the user, or any assistants of the 
user of this equipment cannot read or cannot 
completely understand the warnings and 
information contained in these instructions, the 
employer of the user and his assistants must 
thoroughly educate and train them on the proper 
operation and safety procedures of this 
equipment. 

 
The user's work environment may include certain 
HAZARDS related to the abrasive blasting operation. 
Proper protection for the blaster, as well as anyone else 
that may be EXPOSED to the hazards generated by the 
blasting process, is the responsibility of the user and/or 
the employer. Operators MUST consult with their employer 
about what hazards may be present in the work 
environment including, but not limited to, exposure to 
dust that may contain TOXIC MATERIALS due to the 
presence of silica, cyanide, arsenic or other toxins in the 
abrasive, or materials present in the surface to be blasted 
such as lead or heavy metals in coatings. The environment 
may also include fumes that may be present from adjacent 
coatings application, contaminated water, engine exhaust, 
chemicals, and asbestos. The work area may include 
PHYSICAL HAZARDS such as an uneven work surface, 
poor visibility, excess noise, and electrical hazards. The 
operator MUST consult with his employer on the 
identification of potential hazards, and the appropriate 
measures that MUST be taken to protect the blaster and 
others that might be exposed to these hazards. 

 

 

NOTICE TO PURCHASERS AND USERS OF OUR 

PRODUCTS AND THIS INFORMATIONAL MATERIAL 

 

The products described in this material, and the information 
relating to those products, is intended for knowledgeable, 
experienced users of abrasive blasting equipment. 
 
No representation is intended or made as to the suitability of 
the products described herein for any particular purpose or 
application. No representations are intended or made as to the 
efficiency, production rate, or the useful life of the products 
described herein. Any estimate regarding production rates or 
production finishes are the responsibility of the user and must 
be derived solely from the user’s experience and expertise, and 
must not be based on information in this material. 

 
ALL machines, components and accessories MUST be 
installed, tested, operated and maintained only by trained, 
knowledgeable, experienced users. 

 
The products described in this material may be combined by 
the user in a variety of ways for purposes determined solely by 
the user. No representations are intended or made as to the 
suitability or engineering balance of the combination of 
products determined by the user in his selection, nor as to the 
compliance with regulations or standard practice of such 
combinations of components or products. 

 
DO NOT modify or substitute any Clemco parts with other 
types or brands of equipment. Unauthorized modification 
and parts substitution on supplied air respirators is a 
violation of OSHA regulations and voids the NIOSH 
approval.

  

 

 

Abrasive Blast Equipment is only a component of the range of 
equipment used in an abrasive blasting job. Other products 
may include an air compressor, abrasive, scaffolding, hydraulic 
work platforms or booms, paint spray equipment, 
dehumidification equipment, air filters and receivers, lights, 
ventilation equipment, parts handling equipment, specialized 
respirators, or equipment that while offered by Clemco may 
have been supplied by others. Each manufacturer and supplier 
of the other products used in the abrasive blasting job must be 
contacted for information, training, instruction and warnings 
with regard to the proper and safe use of their equipment in the 
particular application for which the equipment is being used. 
The information provided by Clemco is intended to provide 
instruction only on Clemco products. All operators must be 
trained in the proper, safe, use of this equipment. It is the 
responsibility of the users to familiarize themselves with, and 
comply with, all appropriate laws, regulations, and safe 
practices that apply to the use of these products. Consult with 
your employer about training programs and materials that are 
available. 

 

OPERATIONAL INSTRUCTIONS 

 

OPERATOR SAFETY EQUIPMENT 

 

 

 

 

WARNING

 

Blast operators and others working in the vicinity of 
abrasive blasting must always wear properly-
maintained, NIOSH-approved, respiratory protection 
appropriate for the job site hazards. 

 

DO NOT USE abrasives containing more than one 
percent crystalline (free) silica. Ref. NIOSH Alert 
#92-102 

 

Inhalation of toxic dust (crystalline silica, asbestos, 
lead paint and other toxins) can lead to serious or 
fatal disease (silicosis, asbestosis, lead or other 
poisoning).

 

 

 

Our company is proud to provide a variety of products to the 
abrasive blasting industry, and we have confidence that the 
professionals in our industry will utilize their knowledge and 
expertise in the safe efficient use of these products.

 

 

 

ALWAYS wear NIOSH-approved supplied-air respirators 

as required by OSHA, in the presence of any dust including, 
but not limited to, handling or loading abrasive; blasting or 

 

I

Summary of Contents for 20951

Page 1: ...the preface of this MANUAL and YOU UNDERSTAND its contents These WARNINGS are included for the health and safety of the operator and those in the immediate vicinity Keep this manual for future reference WARNING CLEMCO INDUSTRIES CORP One Cable Car Dr Washington MO 63090 Phone 636 239 4300 Fax 636 239 0788 Email info clemcoindustries com www clemcoindustries com ...

Page 2: ...ines components and accessories MUST be installed tested operated and maintained only by trained knowledgeable experienced users The products described in this material may be combined by the user in a variety of ways for purposes determined solely by the user No representations are intended or made as to the suitability or engineering balance of the combination of products determined by the user ...

Page 3: ...thing air hose Larger empty blast machines or ANY blast machine containing abrasive MUST be transported by mechanical lifting equipment AIRHOSE BLASTHOSE COUPLINGS ANDNOZZLEHOLDERS ALWAYS check to make sure air filter and respirator system hoses are NOT CONNECTED to in plant lines that contain nitrogen acetylene or any other non breathable gas NEVER use oxygen with air line respirators NEVER modif...

Page 4: ...ce as set forth below 1 Seller makes no warranty with respect to products used other than in accordance hereunder 2 On products seller manufactures seller warrants that all products are to be free from defects in workmanship and materials for a period of one year from date of shipment to buyer but no warranty is made that the products are fit for a particular purpose 3 On products which seller buy...

Page 5: ... HOSE IV 8 BLAST HOSE with ID 3 to 4 times the nozzle orifice Lines MUST be run AS STRAIGHT AS POSSIBLE from machine to work area with NO sharp bends Check DAILY for internal wear and external damage 9 HOSE COUPLINGS NOZZLE HOLDERS fitted SNUGLY to hose end and installed using PROPER coupling screws Coupling lugs MUST be snapped FIRMLY into locking position Gasket MUST form positive seal with safe...

Page 6: ... in death or serious injury 1 3 General Description 1 3 1 The Sentinel is a normally closed pneumatically operated media control valve The valve can be joined with a remote control system as shown in Figures 1 and 2 to stop the abrasive flow each time the blast machine is depressurized It can also be used with a pressure hold system to stop the abrasive flow while the machine remains under pressur...

Page 7: ...abrasive metering valve and necessary pipe fittings NOTE The following installation describes how to install the valve on a machine with minimal rotation clearance It is not necessary to disassemble the valve if rotates freely on the bottom of the machine WARNING 2 3 Remove the four cap screws holding the flanged adaptor to the valve assembly 2 4 Use a 1 1 2 close nipple to connect the flanged ada...

Page 8: ...manually operated blast machine such as in an automated system connect an air line between the IN port fitting and a tee installed before the machines air inlet valve Refer to the top illustration in Figure 2 2 8 2 5 If the Sentinel is connected to a remote system connect the air line from the IN port fitting to a controlled air line one that is on the controlled side of the remote control air lin...

Page 9: ...zle EXH port or down if installed on the Sentinel valve as shown in Figure 2 Abrasive flow is ON when the toggle is pointing back away from the nozzle CYL port up if it is as shown in Figure 2 3 3 2 By moving the switch to the OFF position the air supply to the abrasive metering valve is cut off closing the valve and stopping the abrasive flow This allows the operator to have air alone coming from...

Page 10: ...w is removed the spring will decompress forcing the shut off piston out of the body assembly 4 4 3 Insert the piston cup into the cylinder Do not allow the rubber lip of the cup to curl Use a dull edge to work the lip into the opening Once the cup is inserted push it to the bottom of the cylinder 4 2 3 Remove the shut off piston and spring 4 4 4 Place the spring into the upper valve body 4 2 4 Rem...

Page 11: ...sket in place 4 5 1 Place new O rings in the lower body and packing gland lubricate both O rings 4 6 10 Bolt the flanged adaptor and flange gasket onto the body assembly 4 5 2 Push the packing gland into the lower body until it bottoms out on the flange 4 5 3 Place a new shaft gasket over the metering plate stem and push the stem through the packing gland Hold the gland in place as the shaft is pu...

Page 12: ...around metering plate Disassemble valve to clean 5 4 Air leaks through relief hole in cylinder cap 5 4 1 Worn piston cup 5 5 Air leaks through relief hole in valve body spring chamber 5 5 1 Worn seals in wear sleeve or worn O ring between the valve body and wear sleeve 5 6 Abrasive flow decreases after a short period of time after blasting starts 5 6 1 Insufficient air supply causing control press...

Page 13: ...e mesh w o attached ACS 4 2 Gasket shaft with inspection plate 20608 one is for standard use coarse media has a 1 3 8 nominal OD 6 4 Service Kits one is for a urethane plate fine mesh has a 1 nominal OD Service kit upper segment Figure 6 22388 5 1 O ring lower body 1 ID 6 1 O ring Inspection plate 1 3 4 OD nom 22388 UPPER SEGMENT SERVICE KIT Item Qty Description 1 1 Washer rubber 2 1 O ring piston...

Page 14: ...2 NC hex head 03511 19 Metering handle heavy duty 20498 20 Pin valve handle 20246 21 Close nipple 1 1 4 01717 22 Wye 1 1 4 standard 01818 23 Washer 5 16 flat 03216 24 Lower body 20511 25 Flanged adaptor w inspection opening 20513 26 Nut 3 8 NC hex head 03311 27 Nut 5 16 NC wing 03213 28 Flanged adaptor w o inspection opening 20522 29 Hitch pin 20245 30 Petcock 01993 31 Gauge unit 02433 32 Stud gau...

Reviews: