Limit Values Of The Constituent Elements In Water; Electrical Connection (Usa/Canada Version Only) - Gardner Denver L Series Original User And Service Manual

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
pH value
(at 77 °F)
Carbonate
CaCO
hardness
Total hardness
-
Chloride Cl
2-
Sulphate
SO
4
-
Nitrate NO
3
Organic substances
(KMnO absorption)
4
CO
2
free aggressive
carbonic acid
Silicium oxide SiO
2
free chloride Cl
2
Oxygen O
2
+
NH
Ammonium
4
Iron Fe
Manganese Mn
2-
Sulphide S
Ammoniac NH
3
Conductivity
Pass-
Circulating
through
water
water
6 – 9 6 – 9
< 100 mg/l < 50 mg/l
3
(5.6 °dH) (2.8 °dH)
< 2 mmol/l < 0.5 mmol/l
< 200 ppm < 50 ppm
< 11.5 °dH < 2.8 °dH
< 20 °fH < 5 °fH
< 200 mg/l < 50 mg/l
< 200 mg/l < 50 mg/l
< 100 mg/l < 100 mg/l
< 25 mg/l < 10 mg/l
< 20 mg/l < 20 mg/l
< 10 mg/l < 10 mg/l
< 4 mg/l < 2 mg/l
< 2 mg/l < 2 mg/l
< 1mg/l < 1mg/l
< 0.2 mg/l < 0.2 mg/l
<0.1 mg/l <0.1 mg/l
0 0
0 0
> 50. < 800 > 50. < 200
µS/cm µS/cm
13-25-639 v00
7.4 Electrical connection
(USA/CANADA Version only)
DANGER
Risk of strong damages and fire on the
electric power components.
 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.
 The electrical connection should be
made by a qualified electrician.
DANGER
Only for L90RS-L132RS: 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.
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