Maintenance
E:\shares\Baprod\BA\subtec_m\sewage\us\hc\maintenance.fm
7-3
Glycol Overview
Technical data:
Maintenance intervals
Overview of the maintenance intervals needed:
Before initial start-up or after
a longer period of storage
- Checking the insulation resistance
- Fill level check in cooling system - fill level must be between the minimum and the maximum
marks on the cooling jacket
- Fill level check in sealing chamber – lubricant must reach up to the lower edge of the filling
opening
Monthly
- Monitoring the current consumption and voltage
- Checking the used relays for posistors, sealing room monitor, etc.
Every six months
- Visual inspection of the power supply cable
- Visual inspection of the cable holder and the cable bracing
Status
Production
stopped
Product used
Possible alternatives
Product name
Thermofrost
Zitrec
Pekasol L
Propylene glycol
Company
BP
LEU Energie
GmbH & Co. KG
Prokühlsol
GmbH
Fauth & Co. KG
Basis
Monopropylene
glycol
Propane-1,2-
diol
Propane-1,2-
diol
Propane-1,2-diol
Color
None
None
Light yellow
None
Purity
80% - 94.99%
96%
-
98%
Density
1.056 g/ml
1.051 g/ml
1.050 g/cm
3
1.051 g/ml
Boiling point
140 °C
164 °C
185 °C
188 °C
pH value
7.9
9.9
7.5 - 9.5
-
Water
3% - 9.99%
Max. 5%.
-
0,20%
Nitrite
None
None
None
None
Amine
-
None
None
None
Phosphate
-
None
None
None
Silicate
-
None
None
None
Water hazard
class
1
1
1
1
FDA approval
-
Yes
-
-
HT1 approval
-
Yes
-
-
Afssa approval
-
Yes
-
-
Remarks
-
-
-
For medical use
Table 7-2: Technical Data – Glycol Overview
