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Type: Posts; User: maka

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  1. A sketch is worth a thousand words, you are using...

    A sketch is worth a thousand words, you are using a heat exchanger between primary and secondary loads,
    All good, except flake ice and water slurry with block HX circuits, up set pumps and pumping...
  2. I am confused so you are using flake ice and...

    I am confused
    so you are using flake ice and chilled water for concrete batching plant for slow cure concrete maximum strength concrete. Bare in mind most flake machines have a ppm content of salt....
  3. Replies
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    1,766

    Way back chiller manufacturers , Carrier used a 3...

    Way back chiller manufacturers , Carrier used a 3 port solenoid set up to inject hp liquid into O series TXV external equalizer line, acting as a cheap solenoid valve for off cycle pump out, stop...
  4. Replies
    56
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    1,766

    Hi dave1234. the sporaln 'O " series valves are...

    Hi dave1234.
    the sporaln 'O " series valves are designed for turn down load to 30% of rated capacity, control and regulate superheat, if not controlling at part load you will find the push rod...
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    1,136

    Talk to your current employer and request more...

    Talk to your current employer and request more commercial work, no harm in asking before changing.
  6. Good point techmam. if you have an Ipad use...

    Good point techmam.
    if you have an Ipad use photobooth option and scope thermal images for hot spots.
  7. Replies
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    1,019

    Here it is called easyflo, high silver content...

    Here it is called easyflo, high silver content 56%, use suitable flux, suitable for brass to copper, brass to steel, steel to steel , copper to steel and stainless to brass, copper, steel. Remove all...
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    426

    A quick check would be replace run capacitor, as...

    A quick check would be replace run capacitor, as they do deteriorate with heat and age, even if impedence check is OK
  9. Thread: Oil failure

    by maka
    Replies
    11
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    590

    Hi Totally agree with Techman terry HP too low,...

    Hi Totally agree with Techman terry HP too low, 404 is weiird stuff and needs to be at or around 220 psig to make it flow. The low discharge creates low compression ratios and increases volumetric...
  10. Thread: Silver solder

    by maka
    Replies
    18
    Views
    1,208

    Just do not get the stainless steel too hot, 50%...

    Just do not get the stainless steel too hot, 50% silver solder will run with correct flux. Slow and easy.
  11. Thread: Vibe testing

    by maka
    Replies
    26
    Views
    1,353

    We have all used the screw driver method and the...

    We have all used the screw driver method and the mechanics stethyscope method.
    BUT periodic vibtration checks develops a trend as a chartable record, generally if you can feel or here a bearing...
  12. Thread: software

    by maka
    Replies
    3
    Views
    451

    I have been using an older version of quickbooks...

    I have been using an older version of quickbooks for a long time, I print orders to a pdf printer then email them out.
    Have a look on line at xero accounting software, a cloud based thing and very...
  13. Thread: Vibe testing

    by maka
    Replies
    26
    Views
    1,353

    hello. I always use sub contractures for this...

    hello.
    I always use sub contractures for this sort of mainteneance.
    The Fluke test equipement is brilliant BUT expensive as you said , lazer alignment equipment is super expensive, multi K dollars...
  14. Replies
    3
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    1,585

    Hello. why do you want to re invent the wheel,...

    Hello.
    why do you want to re invent the wheel, there is a mountain of information available on the net about what you want to achieve.
    Come up with something original please, like rapid...
  15. Replies
    5
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    426

    Gyms minimum fresh air 10 litres per second per...

    Gyms
    minimum fresh air 10 litres per second per person, sensible heat gain 188 watts per person , latent heat gain 242 watts per person . based on an internal controlled condition of + 20 ' C
  16. Replies
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    1,222

    The latest reports state the emergancy shut down...

    The latest reports state the emergancy shut down SWITCH did not operate and was in the centre of the building.
    Question : why an electric shut down, has it been tested regularly, why did response...
  17. Replies
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    1,222

    The main liquid isolation valve should be clearly...

    The main liquid isolation valve should be clearly marked and identified as the " king " valve or main isolation of liquid to plant from plant room. The Fire response Service should be aware of its...
  18. Replies
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    1,222

    I totally agree with " should ' comment. But in...

    I totally agree with " should ' comment.
    But in business the "should " comment is an optional out clause factor if money is envolved. For companies they limit expenditure to legislation...
  19. Replies
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    1,626

    Hi thanks for feed back, a good result....

    Hi
    thanks for feed back, a good result.
    regards maka
  20. Replies
    20
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    1,222

    Ammonia refrigeration has been around for a...

    Ammonia refrigeration has been around for a hundred plus years and hopefully most safety factors are in place, but the goal posts are constantly shifting. Generally large installations and high risk...
  21. Replies
    27
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    1,626

    If each evaporator is splilling water through...

    If each evaporator is splilling water through fans on same side. Then your TXV/ distributor are mis matched getting a build of ice closet to TXV. Either that or the TXV super heat is way out of...
  22. Replies
    22
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    1,770

    R502 to R404a means oil change to polyester, was...

    R502 to R404a means oil change to polyester, was that done, and system flushing. a change to R507 would have been aa closer match.
  23. Replies
    9
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    544

    Use white teflon wheels, or at least bearing...

    Use white teflon wheels, or at least bearing inserts, no grease required
  24. Replies
    20
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    1,222

    The accident reported globally, Fish processing...

    The accident reported globally,
    Fish processing facility built in 30's , company has had multipe warnings for safety in plant and plant condition.
    Now a person dies. Beggars belief how some...
  25. Replies
    2
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    1,789

    Trumpy should read it

    Trumpy should read it
  26. Replies
    21
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    1,402

    Before any more deep space plans, what about...

    Before any more deep space plans, what about cleaning up our act on this current planet.
    If Nasa spent 20% of funding on this planet it would be better than space program dream time, despite what...
  27. Replies
    21
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    1,402

    a good place to send D Trump, he would build...

    a good place to send D Trump, he would build hotel tower blocks all over, in cojunction with Virgin airlines space module program, and create employment opportunities and export as well.
    there's a...
  28. Replies
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    1,474

    Hi pablok. your penny pinching client would be...

    Hi pablok.
    your penny pinching client would be best advised to spend money on a maintenance program with a reputable service company.
  29. Replies
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    1,457

    Honest, punctual, and takes pride in their work,...

    Honest, punctual, and takes pride in their work, and if does not know asks questions.
  30. Thread: Fresh-Air.

    by maka
    Replies
    22
    Views
    1,430

    10 L/sec per person is the manditary code...

    10 L/sec per person is the manditary code compliance for commercial applications for a building certification. Adds heat to design ac loads, if you want to wing it and not allow fresh air, that is...
  31. Replies
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    5,410

    Hi JP. contact the LPA people and get an...

    Hi JP.
    contact the LPA people and get an imformed opinion on the application and gains with efficiency . Then relay those facts to your tight fisted client.
    Lowering the compression ratio of a...
  32. Replies
    35
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    5,410

    Hi Jp. a case of been there same issues, after...

    Hi Jp.
    a case of been there same issues, after all those cost savings, the TXV s got lost and flooded back and killed two large semi hermetics. The energy nut case company got tipped out and were...
  33. Replies
    35
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    5,410

    Hi jp Sounds like your client has had one of...

    Hi jp
    Sounds like your client has had one of energy efficiency mad man through the site, skimping on every unit of energy consumed
    Sell the client on the benefit of LPA pumps , and lift suction...
  34. Replies
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    5,410

    Hi JPsmith. if the rack included an LPA pump it...

    Hi JPsmith.
    if the rack included an LPA pump it would explain the low discharge pressures.
  35. Thread: Vibe testing

    by maka
    Replies
    26
    Views
    1,353

    Hi I recommend vibration analysis people for...

    Hi
    I recommend vibration analysis people for trending reporting, saves major compressor and equipment failures, the company I referr to clients also does thermal imaging for motor control panels...
  36. Replies
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    1,891

    Where to install SG has always been a topical...

    Where to install SG has always been a topical debate, I like the idea of two one before and one after the drier. On the scale of things what is the real cost of a SG, naff all.
    Certainly would have...
  37. Replies
    34
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    1,891

    Hi UmmScott. Thanks for feed back and good...

    Hi UmmScott.
    Thanks for feed back and good result well done. definitely sounded like an over charge, the trap is sight glass after filter driers.
    Tell your client the over charge by others killed...
  38. Replies
    34
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    1,891

    Sounds like system is over charged. Recover...

    Sounds like system is over charged. Recover system charge, change filter drier and start with new refrigerant, a partially clogged filter drier is possibly the start of all problems after a dirty...
  39. Replies
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    3,546

    Trump is a legioned in his own mind, reality will...

    Trump is a legioned in his own mind, reality will drop into place when he is told to shut the hell up and tow the party line.
  40. Replies
    5
    Views
    514

    Hi, no real mystery with blast chillers, select...

    Hi,
    no real mystery with blast chillers, select evaporators for high sensible heat factor, what you need is sensible cooling and zip zero latent cooling, so high air flows and compressors to match...
  41. Replies
    31
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    2,181

    Oh hell. that glittery stuff is not gold in the...

    Oh hell.
    that glittery stuff is not gold in the sump.
  42. Replies
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    1,038

    R134a is an inefficient refrigerant at low temps...

    R134a is an inefficient refrigerant at low temps and needs more HP to match R12 performance, locally her i use R406a another is R409a suitable with MO and AB oil, and use the same R12 TXV .
    maka
  43. Replies
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    2,181

    Suction super heat seems high.

    Suction super heat seems high.
  44. Replies
    17
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    1,038

    From Emerson site, Looks to be a 1/3 HP R12...

    From Emerson site, Looks to be a 1/3 HP R12 compressor, not sure application range though
  45. Replies
    3
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    492

    Hi VIP99 and icemiester. Thank you both for...

    Hi VIP99 and icemiester.
    Thank you both for comments and information, very much appreciated, will have a look again tomorrow and report back.
    thank you both again Maka
  46. Replies
    5
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    784

    Hi Snapper head. Cross ambient stats are rare...

    Hi Snapper head.
    Cross ambient stats are rare and hard to find , fairly sure Danfoss do them.
    You are probably up to your ears in snow by now, not good.
    Just to annoy you it is extremely hot and...
  47. Replies
    3
    Views
    492

    North Star model five flaker.

    I was asked to comment on performance of above model flaker. Client was not happy with low volume and mushy product.
    System probably 12 years old.
    First comment was that the salt was iodized table...
  48. Replies
    44
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    2,085

    Hi Alex. It is a definitely a good career to get...

    Hi Alex.
    It is a definitely a good career to get into if you have the passion for refrigeration. We need , as an industry more younger people to carry on with it. It takes commitment and dedication...
  49. Replies
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    2,085

    Hi Alex the difference between HVAC and heavy...

    Hi Alex
    the difference between HVAC and heavy commercial and industrial is it is not an 8 to 5 type job, you are basically on call 24/7, and rostered for after hours duties.
  50. Replies
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    3,858

    Is it practical to install independent air supply...

    Is it practical to install independent air supply to rest room area to satisfy extract volumes, with filtration etc..
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