VE150 Cooling Unit
Problems
The Unit is new
Presence of Humidity
Reasons
consumption is less
on charge valve is
3. The pressure on
charge valve is less
of 1.5 bar (21 psi)
Presence of humidity
inside the capillary in
the evaporator.
on charge valve is
3. The pressure on
charge valve is less
of 1.5 bar (21 psi)
inside the cabinet
inside the cabinet
by passing through
the gasket or pipes
Too much gas
Low performance
- a bit higher con-
sumption and pres-
ence of ice on pipe
between evapora-
tor and compressor.
Possible Issue /
Check
Gas Leakage
Where it is possible
1. The electrical
close the leak with
welding or remove the
than normal
part where is the hole.
2. The pressure
lower than 0 bar
(0 psi) when the
system works
when the system
is off
1. The electrical
Switch off the system,
consumption is
wait about 5 minutes,
20% less than
then heat up the capil-
normal.
lary, than turn on the
2. The pressure
system, check again
from the beginning. If
lower than 0 bar
pressure keeps going
(0 psi) when the
under 0 bar, heat up
system works
the capillary while the
system is on.
If pressure keeps
going under 0 bar, it
when the system
is necessary to bring
is off
the unit back to the
Humidity gets
Look where the ice is
thicker, usually humid-
ity gets in on that side.
Put back in place the
hole through the
gasket, by modelling
cabinet. /
it by hand, if it is not
Ice presence all
possible by using mod-
over evaporator
erate heat source
Replace the gasket
where it is possible or
Remove gas a bit at a
time, check how pres-
sure works inside the
Solution
Put the system on pressure
with nitrogen gas max 5 bars
(70 psi), search the leakage
with liquid leak detector or
electronic nose for R134a
More detailed info can be
requested if needed.
laboratory.
the door.
system.
Notes
22