Hardi NAVIGATOR 3000, Инструкция

Страница: 86 / 104

7 - Fa u l t f in d in g
7.2
L i q ui d s y st em
F A UL T P RO B A BLE C A USE C ONTRO L/ R EMEDY
N o s p r ay f ro m b oo m wh en tu rne d on . A ir l e ak on s uct ion l ine . Ch e ck i f s uct ion f i lt er O- rin g is se al in g.
Ch e ck s uct ion tub e a n d f i tt in g s .
Ch e ck t i ght ness o f pump d i aph r agm a n d valv e c o v ers .
A ir in s y s t e m (C en t ri fugal pump). F i ll s uct ion h ose w i th wat er f or ini t i al p ri m e .
S uct ion /p ress u re f i lt ers cl o gg e d. Cl e a n f i lt ers .
Ch e ck y e ll o w s uct ion p i p e is no t o b s t r uct e d or plac e d
t oo ne a r th e ta n k b o tt o m.
Lack o f p ress u re . I n c orre ct a sse mbly. B oos t valv e is o p en .
T oo l i ttl e d is ta n c e b e tw een y e ll o w s uct ion p i p e a n d
ta n k b o tt o m.
Pump valv es bl o ck e d or w orn . Ch e ck f or o b s t r uct ions a n d w e a r .
D e f e ct i v e p ress u re gaug e . Ch e ck f or d ir t at in l e t o f gaug e .
P ress u re d ro pp in g. F i lt ers cl o gg in g. Cl e a n all f i lt ers . F i ll w i th cl e a ner wat er . If u sin g
p o wd ers , mak e s u re ag i tat ion is on .
N o zzl es w orn . Ch e ck fl o w r at e a n d re plac e no zzl es i f i t e xc ee d s 10 %.
Ta n k is a ir t i ght. Ch e ck v en t in ta n k l i d is cl e a r .
S uck in g a ir t o wa r d s en d o f ta n k l o ad. L o w er pump r .p.m.
P ress u re in c re a sin g. P ress u re f i lt ers b e g innin g t o cl o g. Cl e a n all f i lt ers .
Mak e s u re b o tt o m valv e on Cycl one F i lt er is no t l e ft in
cl ose d p osi t ion (ma r k e d w i th 1 d o t) aft er flu s h in g
b oo m. Op er at in g p osi t ion (ma r k e d w i th 2 d o t s ) k ee p s
Cycl one F i lt er cl e a n .
F or mat ion o f f o am. A ir is b ein g s uck e d in t o s y s t e m. Ch e ck t i ght ness /ga s k e t s /O- rin g s o f all f i tt in g s on
s uct ion si d e .
Exc essi v e l i qu i d ag i tat ion . R e duc e pump r .p.m.
Ch e ck s af e ty valv e is t i ght (d i aph r agm s y s t e m s on ly).
E ns u re re tu rns insi d e ta n k a re p resen t.
Use f o am damp in g add i t i v e .
L i qu i d l e ak s f ro m b o tt o m o f pump. Damag e d d i aph r agm. R e plac e . See cha n g in g o f valv es a n d d i aph r agm s .
Op er at in g u ni t no t fu n ct ionin g or hav in g
malfu n ct ion .
Bl o w n fu se ( s ). Ch e ck m e cha ni cal fu n ct ion o f m i c ros w i tch es . Use
cl e a nin g/ lub ri cat in g ag en t i f th e s w i tch d oes no t
o p er at e f ree ly.
Ch e ck m o t or . 45 0 -5 00 m i ll i -Amp eres max. Cha n g e
m o t or , i f o v er .
W ron g p o la ri ty. B ro w n - p os . (+). Blu e - ne g. (-).
V alv es no t cl osin g p ro p er ly. Ch e ck valv e se al s f or o b s t r uct ions .
Ch e ck m i c ros w i tch plat e p osi t ion . L oosen s c re w s
h o ld in g plat e 1 / 2 tu rn .
N o p o w er . W ron g p o la ri ty. Ch e ck that b ro w n is p os . (+), Blu e is
ne g. (-).
Ch e ck p rin t plat e f or d r y so ld ers or l oose c onne ct ions .
Ch e ck fu se h o ld er is t i ght a ro u n d fu se .