arfur mo

that shocks me if true boom! boom! personally, sod that for a game of tin soldiers, if i fit one, has to have spur or plug, 3 amo fuse max i have always assumed the CU being mounted on a lump of timber is for insulation needs, or to get cables behind, but us that correct and still required? just tweaked my curiosity for some reason.

But then, how often do you see a door bell transformer alongside the CU wired to a 32amp rcd with twin bell wire?

the delay is so you have a chance to switch off and avoid calling key holders if you accidentally cause an activation during exit or entry. suggest check manual to allow dialler to cancel if alarm is switched off after activations, otherwise all you key holders will get a false call.

Source: Quotation Calculation For Hours

That is real old school, not seen 2 detectors in parallel deliberately installed for many years, but was used early days of motion sensors. no elephant catchers or quads back then, MWD and Ultrasonic 's were king.Principle was if one detector was tripped by a draft, the other stopped the activation, but a large target would trip both at same time. Could also be used for animals, as long as one did not cover stairs as example, better than stuffing large slug on the zone .

it's no different in principle to todays dual-tecs, back then even double knock, beam pairing or programmable panels had not been introduced. For false alarms if you could not find the cause or did not have the time, you installed a 1uf cap to "slug" the zone against intermittent's, idea being by the time that got bad enough that the cap could not overcome, it was easy enough to find on a swing needle meter.. trouble was some guys took it to the extremes, you'd find 1000uf installed, thief could open a door, have a bath, knick the gear well before the bells went off.

think i can claim ti be possibly the first to fit a Pir ind parrellel to an mwd. ///pause for astonishment/// before pir's were the first choice, on Chubbs the AFA MWD was favoured. Well sime chump specified one in the ceiling void. so whats the problem you ask? well this was Ratners Jewellers shop, under the railway line bridge in Southend High Street. Kept truggering surprise surprise, guy would not sign to disconnect it. so i installed what was then a very mew tech Racal 771 pir in parallel. Result was no more false alarms. Suprvisor picks up the report, asked who authorised it - explained - told to remove it, so i said yup! OK, but any calls you cover it. After 6 he asked me to go back and re-fit the pir lol! Anyone know John Chantry? if you do, then you can ask him .

and possibly fit 'pull up' resistors, should be in the dialler instructions.

Chris Tarrent ran a show a while back, invited listeners to share their finds after moving into a house, one said she opened the under stairs cupboard to find a URN complete with ashes. he remarks "she could have made an absolute fortune selling it as 'ready break' to the cannibals".

fapmsl git and again fapmsl

qfa,last thing i need is some fat old, wearing nothing but suspenders giving me the come on

lol!

lol!. given i work mainly in domestic, found blue mags, questionable underwear, smelly cricket boxes, loads if 'secret' cash but never ever found sexual toys . one very prim and proper lady, flawed me with a remark. due to me needing access she found some of her husbands porno. showing multi entry sex, one male 'model' had an erect fence post like appendage, on seeing it she calmly remarks 'guess its somewhere to hang his hat'. just hilarious, un-expected reaction lol!

Arfur Thatcher?

as above these panels do like mains on before battery, this means you have little option than to have the panel lid open. please beware of the internal mains fuss block and your straying little pinky. for best safety, disconnect battery remove then restore power from the mains spur fuse unit (or plug) feeding AC power to the controls (that should be near it and marked).

i enforce that rule (as shop steward) on Chubb Eastern, after 2 guys within a month fell asleep at the wheel, during a very heavy lightning spell, which back then you knew you would be out all night. i think only 3 systems nocked out by electrical storms since i started, nothing fried to dust, but knocked silly. suspect if this reduction is down to mainly using polly boxes instead of metal - anyone think the same?

i use red/black for power, but i've seen green white done quit allot, think its a colour consistency preference. i.e. days if 4 core (obviously no G/W) for contacts, 6 core for detectors, so you could maintain the more common 4 core red/black for zone feed out, yellow blue for the zone return on DP systems. today eol means you can feed 3 detectors from an 8 core, commonly brown/orange would be to the furthest device or pab, but maintain green white as power. before anyone shouts and hollers, and gets all snotty, its what i have seen - not what i do.

you need to reduce those bare wires, cut them down so casing nearly meets the connector block. be careful the resistors in the picture don't short out due to bare resistor leads and your exposed cable ends, which can happen as you close the lid. nice touch is to use some sleeve casing stripped from larger size surplus cable, and put it over the resistor leads. just as well you 'released' it the .

lol!

many thanks Adrian, the refference to APCO requirements not allowing (i may well be wrong), but i thought that was a comment from i got from James? so perhaps i misunderstood. this little tiny one man band voice is getting to long in the tooth to joins BSIA now, can you imagine the disruption i might cause them .

An pure example imho, i have said it before - about time the inspectorates stood up and told APCO it is 'us' the alarm trade who now how best to electonicaly protect vulnerable targets.

Then surely, the rules, like the law "is an ass"?

Short question - if fobs are so easy to clone why is code and fob not allowed?

Hi Vince, the old stuff could be a challenge . Today panels are in multi zones so the problems are pre devided, add in memory even simplistic like the S9100 with no time/date made a hell of a difference. IMHO Service engineers need to learn how to cross question clients/keyholders to see if what they said was actually possible well before the meter comes out, not to disrespect or talk down them. The 'story' is often embeleshed because they simply don't want to appear to be stupid, or feel a need to seek the engineers respect. Other times it is down to attempting to avoid a call out charge, or the embarresment their error has caused, i've known owners actually force a lower member of staff take the can, just to avoid their own embarresment. to that end, i try to quickly establish the thought in their minds i understand that not every one knows all about alarms, like i don't know about being a machinist or whatever trade they do, i'm not there to embarrase, snear or poke fun at, just fix the system. I see putting keyholders at ease to talk to you, without fear of being 'fined' as a big part of the skills. The firms i worked for with exception of Combat you had a defined 'patch' to look after, tbh the systems were in fairly poor state and clients not communative due to the feckless way they were treated. Found many systems not being used due to problems with faults and not being fixed, i could easily have continued that way i just like a quiet patch, where i know i'll get home at a regular time. I soon estabished if they told be upfront they messed up i'd make it a no charge fault, this saved days and days looking for non existant suposed problems caused by user error, while i go on with the real issues. On PMV's i worked my way through each installation even new ones as though it was faulty, openning j/b's and detection, lifting carpets to get to pressure matts, making diagrams of their exact possitions. remaking connections and so on, not to be seen as a smart ass, just a personal pride and to give me a simpler life, with less arguments with clients over bills. A side and very positive effect, you can teach a client as much as you like, if they have little respect for you, or the alarm co they will learn little. Gaining their respect, gains trust and a positive way of reducing faults and false alarms, because they tend to observe the better anti-false alarm practices you have instilled. Arfur

I would not say 'bring back old stuff', but the skill sets and knowledge used are seemingly dwindling. today you have 'off the shelf' detcetion, banged in at speed, but life expectancy is only 5 - 10 years, the systems i serviced or added to, were often well over 40 years old. this meant those who worked with them, often had to try really hard just to make it reliable, by designing around problems such as damp in old buildings etc. on service your could walk into a building such as Willerby Tailoring in Basildon, every window covered in tube and batten, stood at one end you could not even focus on the far end with 20/20 vision, and all on one zone, on a fault you just got on with it, measure the return with meter on milli amps, looking for itermittents shown by the meters needle movng about. Later on DMM's were a boon, because you could see fluctuations far easier at distance on the earlier LED displays, LCD's are now are the norm, but for that job trust me the LED display could be seen from a very long way, meant you relied less on the keyholder or security gaurd watching it for you as you 'crashed' it out. Arfur