The blower runs, the product looks acceptable, and the team moves on. Two weeks later, pressure at the manifold is lower than expected. Nobody can say whether it was lower on day one, which filter was installed during the trial, or what speed setting the controller used. The first run happened, but it left no useful baseline.<\/p>\n
A first blower test run record<\/strong> should connect each reading to the state of the whole system: delivered model, machine configuration, operating mode, measurement location, time, process result and any alarm or adjustment. Numbers without those conditions are difficult to compare later. A measured pressure at the blower outlet is not the same as a reading at the final air knife, and a motor nameplate is not a measurement of electrical input.<\/p>\n This is a guide for witnessing and documenting a controlled trial, not for bypassing startup checks or working on energized equipment. Qualified personnel should follow the delivered model’s manual and site procedures for inspection, measurement and safe stopping.<\/p>\n The first entry is not a pressure value. It is the identity of what is being tested. Record the blower and controller model and serial numbers, drawing and software revisions where relevant, test date, location and people responsible for the run. For a replacement, identify the old blower and the reason for the change. For a new OEM machine, identify the machine build and the process station served.<\/p>\n Note which prerequisites have been cleared: mechanical installation, inlet and outlet path, filter, cooling space, electrical supply, control signals and the agreed test method. The trial log can refer to separate inspection sheets instead of copying them. What matters is that an unresolved critical item cannot quietly disappear behind a successful \u201cstart\u201d tick.<\/p>\n Set the acceptance target before energization. What process result must the air deliver? What flow or pressure evidence is required at a named location? Which operating modes will be tested? If no target has been agreed, the team can still collect exploratory data, but it should not call the run a final acceptance test.<\/p>\n Every line of the log should include a time and operating mode. A drying line at half speed, a clogged filter, and a full-speed line with clean nozzles can show different pressure and power values while all being part of the same machine. Without context, the readings are not comparable.<\/p>\n Capture the conditions that materially affect demand: product type, line speed or batch rate, number of open branches or nozzles, valve position, blower speed or control setting, filter condition and relevant process load. For an aeration system, note the operating depth and connected branches where applicable. For a drying system, note the incoming wetness and the acceptance area. Do not fill the record with every available PLC tag; select the conditions that explain the measured duty.<\/p>\n When the team changes a setting, start a new log entry. Do not overwrite the earlier result. A before-and-after record can show whether adjusting a speed reference improved the process or merely raised electrical input. It also shows which setting was finally approved.<\/p>\n Pressure is most useful when its location and basis are clear. Write \u201cblower discharge\u201d or \u201cair-knife manifold,\u201d not simply \u201cpressure.\u201d For a vacuum application, identify the suction location. Note whether the reading is gauge or differential as required by the measurement plan, and keep units consistent.<\/p>\n If the design has multiple points, record the ones needed to distinguish where a loss occurs. A blower outlet reading may look satisfactory while a long hose, valve or dirty filter leaves too little pressure at the process. If the team has only one accessible point, record that limitation. It is better than later treating one location as though it proves every other part of the system.<\/p>\n Airflow should be recorded when it can be measured with a suitable method. If it is estimated from a curve or inferred from process observations, label it as an estimate or inference. Do not place a catalogue free-air number in the \u201cmeasured flow\u201d column. The supplier’s proposed point and the measured site state belong in separate fields.<\/p>\n An energy-saving case needs electrical data at the same process duty being tested. Ask the qualified electrical team to record the observed input using an appropriate method and to state the measurement boundary: blower package supply, controller input or another defined point. If only current and voltage are available, do not automatically report an exact kW figure without a suitable power measurement or justified calculation for that system.<\/p>\n Write down the supply and operating mode during the reading. If auxiliary items such as a separate controller or cooling fan are part of the purchased package, say whether they are included. A proposed Towwind unit and an old ring blower cannot be fairly compared if one number includes the complete package and the other excludes material loads.<\/p>\n The first run can establish a starting electrical baseline. It does not prove annual savings by itself. A useful annual estimate also needs the hours spent in each operating mode and a like-for-like reference condition. If the old unit’s measured input was never captured, state that limitation rather than calculating a savings percentage from nameplate ratings.<\/p>\n The log should mark the initial start, changes in speed or machine mode, opening of process branches and the stop sequence. Problems sometimes appear only during a transition: a pressure dip as a second nozzle bank opens, a fault after a rapid restart or a machine that begins feeding product before air is ready.<\/p>\n Record the observed sequence and any alarm text or code exactly as displayed. Note whether the control system stopped, inhibited feed, warned the operator or did nothing. If a fault is simulated as part of an approved test, mark it simulated. A simulation can prove part of the signal path without proving the physical fault condition.<\/p>\n The same principle applies to reset. If a fault clears, record what the operator did and whether the machine restarted automatically. Do not assume that a local blower status light reflects what the PLC or HMI displayed. Those paths should have been checked before commissioning, and the first run confirms how they behave with the real process.<\/p>\n Observation has value when it is specific. \u201cNormal\u201d alone is weak. Record where an unusual sound or vibration was noticed, when it occurred, and whether it changed with speed or valve position. Note visible air leaks, pipe movement, contact with nearby parts or warm air recirculating inside an enclosure. A photograph or short permitted video can help explain an observation, but it does not replace measurements where the selected manual requires them.<\/p>\n If vibration or temperature is measured, record the location, instrument and units. Do not borrow limits from another blower model. Exact acceptance thresholds and permissible surfaces are model-specific and may depend on operating conditions. If the team does not have the required instrument or safe access, leave the value unmeasured and assign a follow-up action.<\/p>\n An abnormal condition should trigger the agreed stop or escalation rule. Repeatedly resetting a fault, changing protection settings or continuing while the process fails is not a productive test. Record the event, preserve the evidence and let the responsible team investigate under the site procedure.<\/p>\n The purchaser is buying a process outcome, not a pressure number in isolation. For PCB or container drying, record the line speed, product type and defined dry area or downstream quality check. For aeration, record the process-specific acceptance measure used by the project. In a cleaning or cooling machine, document the result that the equipment specification actually requires.<\/p>\n If the product passes only after a control change, keep both entries. If there is no product available for a realistic trial, label the run as an equipment test and list the process acceptance still outstanding. Factory acceptance with a surrogate load should not silently become proof of performance at the customer’s site.<\/p>\n A few well-chosen modes are more useful than many unlabelled readings. Record the demanding normal duty, a routine mode and any transition that materially affects the process. The exact test sequence belongs to the agreed application specification.<\/p>\n The test sheet need not be complicated. One header can describe the equipment, instruments and acceptance criteria. A row for each operating state can capture the evidence:<\/p>\n Keep the instrument identification and calibration status where relevant. If a reading is taken from a machine display, note that source. A later technician should be able to understand whether an apparent change is a true operating change or a different measurement method.<\/p>\n At the end of the run, record the approved setting, open issues, owner and next test. Have the relevant process and maintenance representatives sign off on what they witnessed. The first-run sheet then becomes an input to the full commissioning and handover file; it is not a substitute for as-built drawings, manuals or training records.<\/p>\n Towwind Energy Saving Blowers may be suitable for selected new equipment and replacements of traditional ring, regenerative or side-channel blowers. The particular model still must meet the required airflow and pressure at the actual system resistance. A first-run log gives the buyer a way to check that claim against the assembled machine and its process result.<\/p>\n Ask Towwind and the equipment builder to agree in advance on measurement locations, operating modes, electrical input boundary and acceptance criteria. Keep predicted supplier values separate from site measurements. If an installed Towwind unit meets the process duty with lower measured input than a comparable old system, those readings can support a project-specific savings calculation. They do not justify applying the same percentage to every installation.<\/p>\n The buyer should also keep the final controller setting and any model-specific alarm information from the delivered documentation. That information helps the maintenance team reproduce the successful state later, especially if the line changes product or the filter ages.<\/p>\n An initial test is valuable because the machine is new, the installed configuration is known and the team can still correct problems before normal production begins. Write down the state of the system while it is observable. Keep measurements tied to location and load, describe abnormalities precisely, and record every decision to adjust, stop or retest.<\/p>\n If the process passes and the evidence is complete, the buyer has a credible baseline. If something is missing, the log shows exactly what remains to be proved. Both outcomes are better than a note that says only \u201cblower started successfully.\u201d<\/p>\n Record the exact equipment, date, operating mode, control setting, filter and valve state, pressure location and reading, electrical input boundary, process result, alarms or unusual observations, and the decision to continue or stop. Mark unavailable data as unavailable.<\/p>\n No. It may not represent pressure at the air-knife manifold after hoses, valves and other losses. The buyer also needs the defined dry-product result at the relevant line speed and product condition.<\/p>\n Current can be useful diagnostic data, but it is not automatically the complete electrical input in kW. For an energy comparison, use a suitable power measurement and identify whether the controller and relevant auxiliaries are included.<\/p>\n No. It can provide measured power at a defined duty. Annual savings require a comparable old-system baseline, operating hours by mode and like-for-like process output. Do not use nameplate motor ratings as measured consumption.<\/p>\n Record the exact message or code, time, mode and machine response; then follow the selected model’s manual and site stop procedure. Do not erase the evidence with repeated resets or continue without investigating a material fault.<\/p>\n","protected":false},"excerpt":{"rendered":" Know what to record during the first blower test run: operating mode, airflow evidence, pressure, electrical input, alarms and process results.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"towwind_blog_card_label":"","towwind_blog_author":"","towwind_seo_title":"","towwind_meta_description":"","towwind_primary_keyword":"","towwind_search_intent":"","footnotes":""},"categories":[5],"tags":[],"class_list":["post-99","post","type-post","status-publish","format-standard","hentry","category-installation"],"_links":{"self":[{"href":"https:\/\/www.towwind.com\/index.php\/wp-json\/wp\/v2\/posts\/99","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.towwind.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.towwind.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.towwind.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.towwind.com\/index.php\/wp-json\/wp\/v2\/comments?post=99"}],"version-history":[{"count":1,"href":"https:\/\/www.towwind.com\/index.php\/wp-json\/wp\/v2\/posts\/99\/revisions"}],"predecessor-version":[{"id":138,"href":"https:\/\/www.towwind.com\/index.php\/wp-json\/wp\/v2\/posts\/99\/revisions\/138"}],"wp:attachment":[{"href":"https:\/\/www.towwind.com\/index.php\/wp-json\/wp\/v2\/media?parent=99"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.towwind.com\/index.php\/wp-json\/wp\/v2\/categories?post=99"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.towwind.com\/index.php\/wp-json\/wp\/v2\/tags?post=99"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Open the log before the blower starts<\/h2>\n
Record the machine state with every reading<\/h2>\n
Measure pressure at named points<\/h2>\n
Capture electrical input at a defined boundary<\/h2>\n
Watch the transient events, not just the steady reading<\/h2>\n
Describe vibration, noise, leaks and heat without guessing a limit<\/h2>\n
Put the process result beside the blower readings<\/h2>\n
Use a log that makes decisions traceable<\/h2>\n
\n\n
\n \nTime \/ mode<\/th>\n Configuration and process load<\/th>\n Pressure or flow evidence, with location<\/th>\n Electrical input and boundary<\/th>\n Process result<\/th>\n Alarm \/ observation<\/th>\n Decision<\/th>\n<\/tr>\n<\/thead>\n \n Record the actual test time<\/td>\n Speed setting, filter, open branches, product or load<\/td>\n Measured value and units; label estimates<\/td>\n Measured value and included equipment<\/td>\n Pass, fail or pending against defined criterion<\/td>\n Exact event or \u201cnone observed\u201d<\/td>\n Continue, adjust, stop or retest<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n How to use the record with a Towwind proposal<\/h2>\n
Make the first run useful after the trial<\/h2>\n
Frequently Asked Questions<\/h2>\n
What are the minimum useful entries in a first blower test run record?<\/h3>\n
Is a blower outlet pressure reading enough to accept a drying system?<\/h3>\n
Should current be recorded instead of power?<\/h3>\n
Can a first run prove annual energy savings?<\/h3>\n
What if a fault appears during the first run?<\/h3>\n