Datasheet Content
Parts List for TRUE-SPOT® Smoke Tester
INSTRUCTIONS
and
PARTS LIST for
NUMBER CODE
TRUE-SPOT® ITEM REQUIRED NUMBER
Smoke Tester Clip . . . . . . . . . . . 1 0021-0001
Sampling Tube . . 1 0021-0072
Spring . . . . . . . . . 1 0021-0013
Rubber Hose . . . . 1 0021-0071
INSTRUCTION 0021-9012 Smoke Scale . . . . (not shown) 0021-0018
Rev. 2 - June 2010 Filter Paper . . . . (not shown) 0021-0019
Check Valve
Assembly
(Includes
0021-0037) . . . . 1 0021-0075
(Valve Disc
only) . . . . . . . . 1 0021-0037
Cylinder . . . . . . . 1 0021-1013
Trap . . . . . . . . . . 1 0021-0074
Clamp Screw . . . 1 0021-1011
Cylinder Cap . . . 1 0021-0032
Handle . . . . . . . . 1 0021-0033
Rod . . . . . . . . . . . 1 0021-1012
Cup . . . . . . . . . . . 1 0021-0035
Pump Lubricant . 1 0021-0040
(1/4 Fl. Oz.)
Wrench . . . . . . . . (not shown) 0021-0078
5. ®Registered Trademarks
OPERATING INSTRUCTIONS,
MAINTENANCE, cont’d. in rubber piece until retaining shoulder is en-
for Testing Oil Burners gaged. MAKE CERTAIN CUP OR HANDLE
the Clamp Screw holds condensed moisture which would nor- IS ORIENTED ON ROD CORRECTLY AND
mally wet Filter Paper on intake stroke. When Traps are filled CYLINDER CAP IS IN PLACE BEFORE FINAL
with excess condensate as indicated by Filter Paper wetting, ASSEMBLY.
Traps should be removed for cleaning. Remove both Traps 5. Cleaning TRUE-SPOT
with the wrench provided.
TRUE-SPOT should always receive a complete
(b) Traps should be shaken and/or blown out. The Valve Disc cleaning prior to renewal of lubrication (see Section
may be removed to facilitate this operation when cleaning 6), but individual parts should be cleaned as required.
Check Valve Assembly. When replacing Valve Disc, make sure To thoroughly clean TRUE-SPOT, instrument
stepped side of Disc faces inward. should be completely torn down. Do not remove Han-
(1) Tear strip from perforated Filter Paper sheet (in (5) Match color of smoke spot on Filter Paper strip to the clos- dle or Cup except under conditions outlined in Section
SMOKE SCALE envelope); loosen Clamp Screw, insert est spot on 10 spot OIL BURNER SMOKE SCALE (RR- (c) All surfaces adjoining Traps and Filter Paper should be 4. An approved degreasing safety solvent may be used
end of paper strip in slot (Fig. 1) and tighten Clamp 776). In comparing color of smoke spot to chart, slide Filter dried with a clean cloth, or reassemble and tighten Clamp to clean old lubricant fron Cup and Cylinder bore.
Screw; release Sampling Tube from rubber barrel Clip. Paper strip between back of SMOKE SCALE and white plas- Screw without Filter Paper in slot and pull pump Handle WARNING: Always take precautions and fol-
tic slide, viewing smoke spot on Filter Paper through window through 10 or 15 full pump strokes (room air). low manufacturer’s directions when using solvent.
(2) Insert Sampling Tube at least 2 1/2 inches into flue in center of color spots on SMOKE SCALE with smoke spot To clean Cylinder, saturate a swab with solvent
through 9/32 inch diameter hole located between fur- backed by white plastic slide (Fig. 3). 2. Leakage and work into bore until free of encrusted lubricant.
nace/boiler flue outlet and draft regulator. Remove Valve Disc (0021-0037) from Check
(6) Take additional samples required by clamping Filter Paper To check TRUE-SPOT for leakage on Pump Cylinder side of Valve Assembly. Clean and make certain
(3) Pull TRUE-SPOT Handle through TEN (10) full strip in slot so previous spot is visible outside the slot. Filter Paper, clamp piece of hard cardboard securely in slot. ports are clear. When replacing Valve Disc,
pump strokes (Fig. 2). Pull Handle out about one inch and release. TRUE-SPOT make sure stepped side of Disc faces inward.
Handle should return to approximately original position. Fail- Condensed flue gas which has formed a deposit
(4) Remove Sampling Tube from flue, loosen Clamp ure to do so indicates TRUE-SPOT leak caused by rubber Cup on the Rod should be removed by scraping or sand-
Screw and remove Filter Paper. or loose Check Valve Assembly. ing with emery cloth. This will prevent Cylinder Cap
wear which results from Rod working against hole in
OBSERVE THESE SUGGESTIONS 3. If TRUE-SPOT Leaks Cylinder Cap.
FOR MAXIMUM ACCURACY (a) To examine rubber Cup for damage, turn Cylinder Cap 6. Relubricating TRUE-SPOT
(a) Although TRUE-SPOT (0021-7012) has been modi- counterclockwise and pull plunger out of Cylinder. Plunger Tendency for TRUE-SPOT to “pull hard” at
On pull stroke, use a steady pull motion such that a full stroke
fied by addition of condensation Trap and Check Valve should be rotated slowly at end of stroke to prevent possible a sampling speed of 3 to 4 seconds per stroke
is obtained in 3 or 4 seconds.
Assembly, it is still good practice to warm a cold TRUE- damage to rubber Cup due to burrs on Cylinder Cap retainer with Filter Paper in place is usually due to
SPOT to room temperature before testing begins. This slots. If Cup shows suficientwearordamagetocauseleak- lack of lubrication. Clean TRUE-SPOT thor-
(d) Check TRUE-SPOT occasionally for leakage (SEE MAIN- age, replace as described under PARTS REPLACEMENT.
will retard moisture buildup in condensate traps. oughly as described above before lubricating.
TENANCE INSTRUCTIONS).
Bacharach Pump Lubricant (0021-0040)
(b) About every 10th sample, tap Sampling Tube to (b) If Cup shows only slight wear, relubrication as described
(e) For maximum accuracy, hold SMOKE SCALE at arm’s has been selected for superior lubricat-
loosen soot or rust, tighten Clamp Screw without Filter in Section 6 will stop leakage.
length from eyes when comparing smoke spot on Filter Paper.…
