4. Addi ional work may be needed o elimina e possible ambigui y, like o her con aminan s a he spo may make he
de ec or alarm, Clean he leaking area wi h dry clo h and blow clean dry air o he leaking area and repea s ep 3
above o confirm he leak.
5. Leak on evapora or coil is more difficul o de ec han o her areas because i is difficul for sensor ip o access o
he whole evapora or coil. Mos evapora or coils are composed of modules and are ins alled in a closed space wi h
fan for hea exchange. The sys em wi h he fan should be urned on for 10 seconds and hen urn off he fan, wai
10-15 minu es a he evapora or, hen use de ec or o de ec he ou le of he condensa e (make sure he sensor ip
doesn’ ouch wi h he condensa e), or de ec he air inside he evapora or chamber. Mos halogens are ligh er han
he air and likely o accumula e a he highes spo in he closed space. Ana alarm may indica e a leak a he
evapora or coil, bu is hard o repair evapora or by pinpoin ing he precise leak loca ion. In mos cases, he whole coil
has o be replaced.
No es before leak de ec ing:
1. In order o de ec leak in a refrigera ion sys em, he sys em mus have normal opera ing pressure, or a leas
par ially reaches o minimum 50 PSI. Low environmen al empera ure (lower han 59°F or 15°C) may lower he
sys em required pressure and may make he leak less likely o be de ec ed. No leak de ec ed does no mean he
sys em does no have gas leak. Check he pressure before making he conclusion.
2. Leaking areas are usually covered wi h con aminan s such as compressor oil or dir , be careful no o le he sensor
ip in con ac wi h hese con aminan s.
3. The de ec or’s func ion is o de ec halogen’s rela ive change a he sensor ip. Pinpoin ing he leak source needs o
manually adjus he sensi ivi y and rese he de ec or by he echnician. You could follow recommenda ions below:
(1) In areas where he a mosphere is con amina ed wi h halogen refrigeran , press rese key o “ignore” he leak in
he background. Make sure no move he sensor ip away from he con amina ed background while rese ing he
de ec or.
(2) In windy area, he leaked halogen refrigeran may be quickly dilu ed or removed from leak source. The
echnician may use a wind shield o isola e he leak area or emporarily orn off he fan.
(3) To avoid false alarm, preven he sensor ip agains ouching any mois ure or o her solven .
Maintenance
Maintenance
Proper main enance is impor an and may ex end he service life and improve he performance of your de ec or.
Warning: Turn he power off before replacing he sensor ip. Vol age across he ip may pose an elec rical hazard.
Keep he sensor ip clean: Use co on clo h or dry air o clean he shield on he sensor ip if i ge s con amina ed. If he
sensor ip i self is con amina ed, soak he ip in absolu e alcohol for a few minu es, and hen use compressed air o blow i
dry, or dry i wi h clo h.
No e: Never use s rong solven s such as Gasoline, mineral oil, urpen ine, hese solven s may coa he sensor wi h a hin film
and reduce he sensi ivi y of he de ec or and make he de ec or slow o respond o a leak.
Pu he de ec or and he ip in a dry and clean place; remove he ba eries if he de ec or is no used for a long ime.
Troubleshooting
Troubleshooting
Symp om Possible reasons Solu ion
The de ec or could no urn on
A) The energy of ba eries is oo low o
urn on.
B) The pole piece of ba ery connec or
has been oxidized.
A) Please replace new ba eries.
B) Please scrape he oxidiza ion layer.
6
MGF
MGF srl –– Via Chico Mendes, 8 – 43058 Sorbolo Mezzani (PR) I aly – Tel. +39 0521-818301 Fax: +39 0521-818202
e-mail: info@mgf ools.com – www.mgf ools.com – www.nebulizzare.com
