65
TROUBLESHOOTING
Trouble
Cause
Vacuum
pr
essur
e def
ecti
ve
Ai
r leaki
ng
Wa
te
r su
ction
fa
ilu
re
Insufficie
nt
,w
ater
di
schar
ge
Floodlight
, Ga
ug
e lam
p, d
o n
ot wor
k
Action
C
aused
by suc
tio
n
C
aused
by P
um
p u
nit
C
aused
by Pl
aypi
pe
C
aused
by Engi
ne u
nit
P
rime
r
Vacuum pipe loose
or cracking
●
●
Tighten securely a
clump of vacuum pipe or
replace.
Strainer cap loose
or “O” ring failure
●
●
Tighten securely or
replace.
V belt damaged or
worn
●
●
Replace.
Vacuum pump rotor
shaft seizing
●
Repair
or
replace.
Vane, Side plate
Worn or damaged
●
●
Replace.
Water stop
Water stop valve
contamination
●
● ●
Clean
up.
Water stop valve
diaphragm failure
●
● ●
Replace.
15
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
14
15
16
17
18
13
14
15
16
17
18