HygroMatik SteamKit H, Manual

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Page 29
9.2 Maintenance frame work
when unit is operated with
fully demin. water and con-
densate
Instructions on maintenance and cleaning
intervals are entirely based on empirical data.
9.3 Maintenance when unit is
operated with tap water or
partially softened water
No precise maintenance intervals can be
specified because these always depend on
water quality and the amount of steam gener-
ated. It is advisable to adjust the frequency of
maintenance to the specific operational expe-
rience. HygroMatik recommends to check the
opened steam cylinder 1 or 2 weeks after ini-
tial commissioning in order to quantify the
amount of residue produced so far, allowing
for determining future maintenance intervals
and/or the adjustment of blow-down cycles
possibly required.
Blow-down cycles
The vaporisation process causes hardness
builders (calcium) in form of solids of various
compositions to fall out within the steam cyl-
inder. Cyclic blow-down by means of a pow-
erful blow-down pump followed by fresh
water refills remove parts of this solid built-
up.
Water quality
When tap water is used, it must be taken into
account that cleaning intervals shorten as the
carbonate hardness level increases. As a
general rule, it is preferable to operate the
unit with fully demineralized water since ope-
ration will not be affected by mineral deposits
and flushing loss will be minimized.
Possibly, maintenance intervals may be
extended by moderately increasing the blow-
down cycle rate. Please consult your expert
dealer.
Cycle time Maintenance work
4 weeks after
commissioning
(also after installa-
tion of a new steam
cylinder)
• Visual inspection of electrical and mechanical connections
• Remove mineral deposits from steam cylinder, water drain hose
and blow-down pump
• Visual inspection of level control.
• Visual inspection of the steam cylinder interior.
annually • Visual inspection of electrical and mechanical connections
• Remove mineral deposits from steam cylinder, water drain hose
and blow-down pump.
• Visual inspection of level control.
• Visual inspection of the steam cylinder interior.
• Removal of used O-rings between the cylinder halves, in the base
and in the steam hose adapter
• Cleaning the vent hole in the pipe bend
• Cleaning the fine filter of the solenoid valve
• Checking the hoses
Please note