MODELS 1028 & 1042 BLAST MACHINES Page 11
© 2013 CLEMCO INDUSTRIES CORP. www.clemcoindustries.com Manual No. 04124, Rev. K
6.4 Abrasive surging
6.4.1 A certain amount of abrasive surge is normal at
start-up. Should the flow of abrasive continue to surge,
reduce the amount of abrasive in the air stream by
adjusting the metering valve. See Section 3.5.
6.4.2 Rapidly depressurize the machine. Slow
depressurization will load the blast hose with abrasive,
and cause surging at start-up.
6.5 Intermittent abrasive flow
6.5.1 Moisture in the blast machine or in the air
supply. Drain moisture from the compressor's receiver
tank, and if so equipped, the blast machine's air filter. If
moisture continues to be a problem, a dryer or
aftercooler may be required in the air supply line.
6.5.2 Abrasive may be worn from recycling. Replace
abrasive.
6.6 Blast machine will not pressurize
6.6.1 Make sure the compressor is "on" and all air
supply valves to the machine are open.
6.6.2 Insufficient-size air supply hose or reduced-size
fittings between the compressor and blast machine. See
Section 3.2.2.
6.6.3 Dirty filter element in air filter. Check filter
element.
6.6.4 Pop-up valve stuck, or internal piping worn or
out of alignment. Inspect internal piping.
7.0 REPLACEMENT PARTS
7.1 Accessories, not shown
Description Stock No.
Remote control system, TLR-50 ............................ 02518
Filter, 1/2" NPT with manual drain ......................... 01308
Regulator, 1/2" pressure ........................................ 01902
Cover, blast machine, poly .................................... 15097
Cover, 10" diameter, steel ...................................... 03107
Screen, 10" diameter ............................................. 03362
Blast hose, 1/2" ID x 25 ft. 2-braid
without couplings ............................................. 23750
coupled with 00577 and 00599 ....................... 01268
Holder, nozzle, CHE-1/2 ........................................ 00577
Coupling, CQA-1/2 quick ....................................... 00599
Gaskets, CQG, for 00559, pack of 10 ................... 00850
Nozzle, tungsten lined, 3/4" NPT x 1-3/4" long
CT-2, 1/8" orifice ............................................. 01351
CT-3, 3/16" orifice ........................................... 01352
CT-4, 1/4" orifice ............................................. 01353
Nozzle, boron lined, 3/4" NPT x 1-3/4" long
CTB-2, 1/8" orifice ........................................... 21090
CTB-3, 3/16" orifice ......................................... 21091
CTB-4, 1/4" orifice ........................................... 21092
Washers, NW-1 for CT & CTB nozzle, pack of 10 21580
7.2 Abrasive Metering Valve, 1/2-In. NPT
Figure 4
Item Description Stock No.
(-) Metering valve assembly, Model MSV ..... 01247
1. Upper valve body ...................................... 01258
2. Gasket, valve body ................................... 01260
3. Metering plate and stem ........................... 01261
4. O-ring, ....................................................... 00794
5. Pin, handle ................................................ 01263
6. Washer, nylon ........................................... 01266
7. Lower valve body ...................................... 01259
8. Spring ....................................................... 02178
9. Handle, metering ...................................... 01262
10. Cap screw, 5/16-NC x 1-3/4" .... Purchase locally
11. Nut, 5/16-NC hex ...................... Purchase locally
Figure 4
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