Gardner Denver EnviroAire 15, Оригинальное руководство по эксплуатации

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10. Service and maintenance
44
•
Attach the side cover with a new seal. Insert the
screws to a torque of 18.5 lbf ft.
•
Check the water level on the water level indicator
(-6- Fig. 12) and add water if necessary (see
Chapter 7.4 Water supply).
10.14 Inspection intervals for pressure
reservoir and electrical installations
Pressure reservoir
As per the requirements of the 97/23/EC Pressure
Equipment Directive, a qualified person must inspect
the pressure reservoir from inside every five years.
As per the requirements of the 97/23/EC Pressure
Equipment Directive, an appointed body must perform a
strength test on the pressure reservoir after ten years.
Electrical installation
After four years, or after each intervention, the electric
installation must be tested by an electrician.
Should stricter inspection intervals apply in your
country, these must be observed.
10.15 Checking the water level sensor
DANGER
Only perform checks and carry out work on
the screw compressor when the unit is out
of operation, depressurized, and secured
from being switched on again!
CAUTION
Caution when draining hot water: risk of
scalding!
•
Allow the unit to cool down first.
1
Fig. 25
1
2
Fig. 26
Check if the water level indicator on the GD Pilot TS
display deviates greatly from the water level indicator
(-1- Fig. 25) on the pressure reservoir.
If this is the case, or the GD Pilot TS reports an error
with the water level sensor, then this should be checked
when the system is shut down as follows:
Raise the water level to approx. 2" above the 'upper'
mark of the water display indicator (-5- Fig. 12) of the
pressure reservoir. The resistance value of both the
sensor connections (-1- and -2- Fig. 26) must lie
between 1376
Ω and 1394 Ω .
To check the lower sensor value, release the
connecting line from the lower screw connection of the
water level sensor. Drain the water level sensor into a
container provided. The drained water level sensor
must have a resistance at both the connections
(-1- and -2- Fig. 26) of between 990
Ω and 1010 Ω .
If one of these limit values is not reached, then the
water level sensor will have to be replaced.
After the checking and possible replacement of the
water level sensor, adjust the water level in the
pressure reservoir again so that it is situated between
both the fill level marks (-4- and -5- Fig. 12) once more.