Gardner Denver L55, Руководство пользователя и обслуживания

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August 20, 2018 31
7.3.1 Limit values of the constituent
elements in water
NOTICE
The information set out below is intended for
guidance and may differ under certain
conditions of operation. The total composition
and the operating temperature are always
decisive. Warranty claims may not be derived
from this..
Constituent elements of
water / characteristic
values
Circulating
water
Pass-
through
water
pH value
(at 77 °F)
6
– 9
6
– 9
Carbonate
hardness
CaCO
3
< 100 mg/l
(5.6 °dH)
< 50 mg/l
(2.8 °dH)
Total hardness
< 2 mmol/l
< 200 ppm
< 11.5 °dH
< 20 °fH
< 0.5 mmol/l
< 50 ppm
< 2.8 °dH
< 5 °fH
Chloride Cl
-
< 200 mg/l < 50 mg/l
Sulphate SO
4
2-
< 200 mg/l < 50 mg/l
Nitrate NO
3
−
< 100 mg/l < 100 mg/l
Organic substances
(KMnO
4
absorption)
< 25 mg/l < 10 mg/l
free aggressive
carbonic acid
CO
2
< 20 mg/l < 20 mg/l
Silicium oxide SiO
2
< 10 mg/l < 10 mg/l
free chloride Cl
2
< 4 mg/l < 2 mg/l
Oxygen O
2
< 2 mg/l < 2 mg/l
Ammonium NH
4
+
< 1mg/l < 1mg/l
Iron Fe < 0.2 mg/l < 0.2 mg/l
Manganese Mn <0.1 mg/l <0.1 mg/l
Sulphide S
2-
0 0
Ammoniac NH
3
0 0
Conductivity
> 50. < 800
µS/cm
> 50. < 200
µS/cm
7.4 Electrical connection
(USA/CANADA Version only)
DANGER
Risk of strong damages and fire on the
electric power components.
1. · The power supply to the compressor
side has to be fitted for industrial
equipment and fulfilling the requirements
of NFPA 79. Any kind of operation
outside of the stated limits of NFPA 79 is
inadmissible.
2. · The electrical connection should be
made by a qualified electrician.
DANGER
Only for L55RS-L75RS: There is a risk of
electric shock from charged capacitors!
·
Disconnect the system from the mains
and wait 10 minutes before touching
electrical components. The power
capacitors need this time to discharge.
WARNING
If local regulations are stricter than the
values given below, observe the stricter
regulations.
WARNING
If the electrical connection is made to a non-
earthed three-phase system (IT network),
please see the corresponding notes in the
included frequency converter
documentation.
If a residual current device (RCD) is used to
monitor the earthing connection in the
system for earth faults, to prevent
interruptions only Type B devices
(adjustable trip setting and delay) may be
used.