Total Station Fungus and Moisture Problems Prevention, Cleaning and Servicing Malaysia

Total Station Fungus and Moisture Problems – Prevention, Cleaning and Servicing Malaysia Malaysia's hot and humid climate creates a particular maintenance challenge for surveying instruments: moisture and optical fungus. A total station may spend years moving between: Air-conditioned offices Hot construction sites Humid outdoor environments Vehicles Equipment stores Wet surveying conditions Over time, poor storage or trapped moisture can contribute to problems such as: Fungus inside telescope optics Hazy lenses Internal condensation Corroded electrical contacts Keypad problems Display problems Reduced optical clarity Fungus should not be treated as only a cosmetic issue. If contamination develops inside the optical system, professional servicing may be required. What Is Fungus in a Total Station? Optical fungus refers to fungal growth or contamination that can develop on or around optical components under favourable environmental conditions. It may appear as: Fine web-like patterns Branching marks Cloudy patches Small spots Haze Sometimes users initially think the lens is simply dirty. But cleaning the outside surface does not remove the marks because the contamination is inside the optical system. Why Can Fungus Develop? Fungal growth is encouraged by suitable environmental conditions, particularly persistent moisture and humidity. Risk can increase when equipment is: Stored while damp Kept in a humid storeroom Left unused for long periods Stored inside a wet carrying case Exposed repeatedly to condensation Poorly ventilated during storage Malaysia's climate makes moisture control especially important for precision optical equipment. Where Can Fungus Appear? Potential areas include: Telescope optical components Objective lens assembly Eyepiece optical system Optical plummet Not every mark seen through the telescope is necessarily fungus, however. It could also be: Dust Condensation Coating deterioration Scratches Other internal contamination Inspection is needed to determine the actual cause. How Do I Know If My Total Station Has Fungus? A common complaint is: “The telescope looks cloudy even after I clean the lens.” Another is: “I can see spider-web marks inside the telescope.” Try inspecting the external objective lens and eyepiece under suitable lighting. If the external surfaces are clean but the marks remain visible internally, internal optical contamination becomes more likely. Total Station Telescope Looks Hazy A hazy telescope can have several possible causes. Check: External contamination Dust, fingerprints or water marks on the objective lens. Eyepiece focusing Incorrect eyepiece adjustment. Target focusing Incorrect telescope focus. Condensation Moisture may temporarily affect optical clarity. Internal contamination Dust, haze or fungus may exist inside the optical system. Do not immediately dismantle the telescope. Fungus vs Condensation These two conditions can look different. Condensation May appear as: Fogging Moisture Temporary cloudy appearance and may change as temperature conditions change. Fungus May appear as: Persistent spots Fine branches Web-like patterns Irregular permanent-looking marks However, visual appearance alone may not always be enough for a definite diagnosis. Why Air Conditioning Can Matter The problem is not that air conditioning itself damages a total station. The concern is rapid environmental change. For example: Cold instrument from air-conditioned room ↓ Moved immediately into warm, humid outdoor air ↓ Potential condensation under suitable conditions Surveyors in Malaysia encounter these temperature transitions frequently. Follow the manufacturer's recommendations for acclimatisation and environmental operation. Do Not Store a Wet Total Station After rain, one of the worst habits is: Wet instrument → Wet case → Close case → Store This can trap moisture around the equipment. Instead, follow appropriate manufacturer drying procedures and make sure both the instrument and case are suitably dry before long-term storage. The Carrying Case Can Hold Moisture Surveyors often check the total station but forget the case. The foam or interior can remain damp after: Heavy rain Flood exposure Wet fieldwork Storage in a humid area If a dry total station is repeatedly placed into a damp case, moisture management remains poor. Inspect the case periodically. Can Fungus Damage the Lens? Potentially, yes. Long-term fungal contamination may affect optical surfaces or coatings. The practical severity depends on: Location Extent Duration Optical component Condition of coatings Early inspection is preferable to allowing contamination to continue developing. Does Fungus Affect Total Station Accuracy? This requires an important distinction. Fungus does not automatically mean the total station's angle or distance calibration is wrong. But optical contamination can potentially affect: Image clarity Target visibility Aiming EDM signal performance in some circumstances If the telescope becomes difficult to aim accurately, survey quality can be affected indirectly even if the instrument's angle system remains within specification. Can Fungus Affect EDM? The EDM system depends on transmitting and receiving optical signals. Contamination in relevant optical paths may potentially degrade performance depending on the instrument design and severity. Possible symptoms could include: Reduced measurement reliability Difficulty at longer range Weak signal Inconsistent performance But EDM problems have many other causes. Do not diagnose fungus solely because distance measurement is difficult. Can I Clean Total Station Fungus Myself? External lens cleaning and internal fungus removal are very different jobs. External cleaning may be part of normal user maintenance when performed correctly. Internal fungus cleaning may require: Instrument disassembly Optical cleaning Reassembly Alignment checks Measurement verification Therefore, internal optical cleaning is generally better handled by technicians familiar with surveying instruments. Why Not Open the Telescope Yourself? The telescope is part of a precision measurement system. Improper disassembly can affect: Collimation Optical alignment Sealing EDM optical path Telescope focusing Internal cleanliness Removing fungus but creating a collimation problem is not a successful repair. Do Not Spray Household Cleaner Into the Telescope Avoid using unsuitable products such as: General glass cleaner Household detergent Lubricant spray Random solvents Optical coatings, seals, plastics and adhesives can react differently to chemicals. Use appropriate optical-cleaning procedures and manufacturer guidance. How to Clean the External Objective Lens A sensible principle is: Remove loose particles before wiping. Dragging hard dust or grit across an optical surface can cause scratches. Use suitable: Optical blower or recommended dust-removal method Lens-cleaning material Appropriate optical cleaning solution where required Avoid unnecessary cleaning. A small amount of removable dust does not justify repeatedly rubbing the lens. Fingerprints on the Objective Lens Fingerprints contain oils that can leave marks on optical surfaces. Avoid touching the objective lens directly. If fingerprints are present, clean them using appropriate optical-cleaning procedures rather than wiping them with clothing. Can I Use Alcohol? Do not assume every optical surface, coating or plastic component should be cleaned with the same solvent. Follow the manufacturer's cleaning recommendation for the particular instrument. When uncertain, professional cleaning is safer than experimenting with strong chemicals. Optical Plummet Fungus The optical plummet can also develop visibility problems. Symptoms may include: Blurry ground point Internal haze Marks that cannot be removed externally First confirm correct focusing. If the view remains cloudy, inspect for possible internal contamination. Because the plummet is also related to centering, its alignment should be considered after relevant servicing. Fungus in an Older Total Station Older instruments may be more likely to show accumulated environmental effects, particularly if their storage history is unknown. Before buying or putting an older total station back into service, inspect: Objective lens Eyepiece Telescope image Optical plummet Display Keypad Battery compartment Then check measurement performance separately. A clean-looking instrument is not necessarily calibrated, and a cosmetically aged instrument is not necessarily inaccurate. Long-Term Total Station Storage If a total station will remain unused for an extended period, follow manufacturer storage recommendations. Important considerations include: Dry storage environment Appropriate temperature Humidity control Clean carrying case Battery storage procedure Periodic inspection Do not simply leave the instrument untouched for several years and assume its condition will remain unchanged. Should I Use a Dry Cabinet? For companies storing multiple precision optical instruments in humid environments, controlled storage may be worth considering. The appropriate storage conditions should follow equipment manufacturer recommendations. Avoid extremes. The objective is not simply: “Make everything as dry as possible.” It is to maintain a suitable, controlled environment for the equipment. Silica Gel in Total Station Case Desiccant can assist with moisture management when used appropriately. But remember: Silica gel is not a repair. It cannot correct: Failed seals Existing internal corrosion Existing fungus Water-damaged electronics It should not be used as a substitute for addressing the actual source of moisture. How Often Should You Inspect Stored Total Stations? There is no single interval suitable for every company. The appropriate frequency depends on: Storage environment Usage Equipment value Previous moisture problems For rarely used equipment, periodic visual inspection is preferable to discovering fungus only when the instrument is urgently needed. Total Station Moisture Prevention Checklist Malaysia For humid Malaysian conditions: 1. Do not store the instrument wet 2. Keep the carrying case dry 3. Avoid prolonged storage in hot vehicles 4. Manage rapid temperature transitions 5. Inspect lenses periodically 6. Inspect battery contacts 7. Keep connector covers properly fitted 8. Follow manufacturer storage requirements 9. Consider appropriate controlled storage for valuable equipment 10. Investigate internal condensation early These habits can reduce long-term moisture problems. Fungus Cleaning vs Calibration These are separate services. Fungus Cleaning Addresses optical contamination. Calibration Checks measurement performance. If internal optical components must be removed or adjusted during servicing, relevant alignment and measurement checks may be appropriate afterwards. Do not assume that cleaning alone automatically verifies total station accuracy. Should a Total Station Be Calibrated After Optical Repair? It depends on the repair scope. If servicing involves parts related to: Telescope alignment EDM optical path Compensator Measurement axes then appropriate checks may be required after reassembly. A professional service process should consider both: Does the instrument work? and: Does it still measure correctly? Buying a Used Total Station – Check for Fungus Before purchasing a used total station, inspect it in good lighting. Look through the telescope at both: Bright background Normal target Check for: Haze Fungus Scratches Internal dust Crosshair condition Focusing problems Also inspect the optical plummet where applicable. Optical condition should be considered together with: EDM Angle accuracy Compensator Tribrach Battery Calibration history When Should You Send the Total Station for Servicing? Consider professional inspection when you notice: Visible internal fungus Persistent telescope haze Internal condensation Fogging that does not clear normally Optical plummet haze EDM deterioration associated with optical contamination Moisture after heavy rain Signs of internal corrosion Early servicing may prevent a relatively manageable contamination problem from becoming more serious. Total Station Fungus Cleaning & Servicing Malaysia MTM Precision provides total station inspection, servicing, calibration and repair in Malaysia. Common moisture and optical problems that can be investigated include: Total station fungus Telescope haze Dirty internal optics Optical plummet problems Internal condensation Moisture after rain Water damage EDM problems Telescope focusing problems Problems after long-term storage MTM Precision also supports calibration and servicing for surveying instruments from brands commonly used in Malaysia, including Topcon, Nikon, Leica, Trimble and Pentax, subject to model condition and service requirements. When contacting MTM Precision, send a clear photo if the fungus or condensation can be seen. For internal optical problems, avoid dismantling the total station before inspection. Contact MTM Precision MTM Precision Sdn. Bhd. Showroom & Service Centre No. 29-1 & 29-2, Jalan Bandar 18, Pusat Bandar Puchong, 47160 Puchong, Selangor, Malaysia 馃寪 Website: www.mtmpre.com.my 馃摟 Email: mtmpre@yahoo.com 馃摫 WhatsApp: +6016-660 7346