Sullair SR-250 - Electrical Connection; Condensate Drain Connection

3
Code: 02250145-- 604 SR-- 250 --- SR -- 3000
English
g) If the system is prone to instantaneous pressure surges which exceed the dryer’s
rated capacity, mount a suitably sized receiver near the overpressure source. For
more precise information, contact the manufacturer or distributor.
h) It is necessary install a pre---filter (max. 3 micron) on the dryer intake to prevent
rust, scale or other pollutants from entering the system and clogging the conden-
sate drain and heat exchangers, thereby causing severe pressure drops.
This filter must be close to the dryer inlet.
i) For water cooled versions it is recommended to install a filter on the condenser
water inlet to prevent the ingress of debris that will gradually choke the pa ssages,
with negative effects on dryer performance.
j)
Water--cooled versions
WATER QUALITY RECOMMENDATIONS
The water quality should satisfy the following conditions:
Parameter Concentration Parameter Concentration
Langelier Index 0 --- 1 Iron (Fe) <0,2 ppm
pH 7 . 5 --- 9 Nitrate (NO
3
) <2 ppm
Sulfate (SO
4
2 ---
) <50 ppm Alkalinity (HCO
3
---
) 70---300 ppm
Electrical conductivity 10---500µS/cm Hydrogen Sulfide (H
2
S) <0.05 ppm
Ammonia (NH
3
) <1 ppm Free CO
2
<5 ppm
Chloride (Cl
---
) <50 ppm Aluminium (Al) <0.2 ppm
To t a l H a r d n e s s 70---150 ppm CaCO
3
Condenser cooling 43.5---145 psig
Oxygen <0.1 ppm
C
o
n
d
e
n
s
e
r
c
o
o
l
i
n
g
water pressure
4
3
.
5
1
4
5
p
s
i
g
(3---10 barg)
k) Always install a bypass line with shut---of f valves (supplied as option for SR- 250
-- SR- 500) to permi t maintenance or calibration without interrupting the com-
pressed air flow to the user.
l) Correctly connect the drye r to the air inlet and outlet connections. If the com-
pressed air network is prone to vibrations, use hoses to make the connections.
If the mains is subject to high levels of pulsation, ensure that the connection is
equipped with pulsation dampers.
m) Do not connect condensate drains common to other pressurised drain line s in a
closed circuit. Make sure the outflow from the condensate drains is unimpeded.
Connect the condensate piping in such a way to ensure that sound levels are kept
to a minimum during drainage.
Ensure that all condensate is disposed of i n a responsible manner, in accordance
with local norms concerning environmental protection.
n) The ambient air around the dryer and compressor must not contain solid or gas-
eous contaminants. All compressed and condensed gases can generate acids or
chemical products which may damage the compressor or components inside the
dryer.
Take particular care with sulphur, ammonia, chlorine and installations in marine
environments. For further advice or assistance consult the manufacturer.
2.1 Electrical connection (see Fi g. 5 / Fig. 10)
Use a cable that complies with regulations inforce in the country of installation(con-
nected to terminals “ L1 and L2
” for single---phase machines and to terminals
“ L 1 --- L 2 --- L 3 --- G N D
” for three---phase machines), connected to the junction
box, with minimum wire sizes: (see machine electrical schematic in Fig. 10).
Install an overcurrent and earth leakage circuit breaker upstream from the
plant (IDn = 0.3A) with a 0. 12 inch (3 mm) gap between contacts when open (refer
also to local laws).
2.2 Condensate drain connection
a) The drainer is already installed and cabled.
b) Connect the condensate drain outlet to the drainage system.
c) Any maintenance operation must be done by a n expert technician.
N.B.: The dryer is supplied either with a timed drain or an electronic level sensing
drain. Refer to the separat e manual supplied with the dryer for specifi c details con-
cerning the condensate drain.