Operation Manual

B - 9 Operating manual dehumidifier TTR 5000
G
B - 10 Operating manual dehumidifier TTR 5000
G
The dehumidifier should never be put into operation without air
filters. Dirt deposits in the drying wheel can lead to decreased
drying performance!
Air heater
The heat exchangers are maintenance-free; however, they should be
checked for contamination every 6 months and cleaned if necessary.
In case of a defect the complete heat exchanger unit can be removed
after removing the housing panel.
Thermostats
The electrical switching function is to be tested once per year. If a
thermostat is defective it must be replaced completely.
Seals
The circumferential and radial seals are to be checked regularly for
tightness (correct seating), damage and dirt.
General
In order to ensure perfect functioning, the air dehumidification centre
should be checked annually for damage, wear or leakage.
Maintenance intervals
Filters Rotor bearing Motors Geared motor Air heater Seals Thermostats V-belts
As necessary X X
Monthly X
Half-yearly X X
Annually X X X
09. Damaging effects on silica gel rotors
Some of the substances and compounds listed below are typical of
substances which can dissolve the honeycomb shaped silica gel rotors
thereby negatively affecting the dehumidification performance.
The sorption rotor should not be exposed to air which is contaminated
with the following substances or substances that are similar to them.
Even the smallest of concentrations in the air can have long-term da-
maging effects on the material of the rotor and the sorption capacity.
The substances in the list remain in the sorption material and can have
the following effects:
• Drop in performance due to blocked silica gel pores
• Drop in performance due to chemical reaction with the silica gel
• Destroys the mechanical structure of the rotor through strong acids
or strong bases
Anorganic substances ( example )
No. Substances chem. Formula Effects
1 Lithium chlorid LiCl Reduction in the effectiveness of the silica gel
1)
2 Sodium hydroxide NaOH Destroys the silica gel structure
3 Calcium hydroxide KOH Destroys the silica gel structure
4 Sodium chloride NaCl Reduction in the effectiveness of the silica gel
1)
5 Calium chloride KCl Reduction in the effectiveness of the silica gel
1
)
6 Calcium chloride CaCl2 Reduction in the effectiveness of the silica gel
1)
7 Magnesium chloride MgCl2 Reduction in the effectiveness of the silica gel
1)
8 Magnesium chloride NH3 Destroys the silica gel structure
9 Hydroflouric acid HF Destroys the mechanical strength of the rotor material
10 Aluminium chloride AlCl3 Reduction in the effectiveness of the silica gel
1)
11 Sea water Reduction in the effectiveness of the silica gel
1)
12 Steam at high temperature Destroys the silica gel structure
13 Softeners Blocks the silica gel pores
14 Strong acids ph ≤ 2...3 Destroys the mechanical strength of the rotor material
15 Bases ph ≥ 7...8 Destroys the sorption capacitiy of the silica gel
15 Amines R-NH2 Reduction in the effectiveness of the silica gel1)
Note: 1) Reduces the inner surface of the silica gel pores, which results in a loss in performance.