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Manual ENA 7-30
76
ENG
2.5.1. Avoiding excessive pressure
Appropriate safety valves that prevent that the maximum operation pressure is exceeded:
• Open not later than the maximum allowable working pressure is reached.
• Can conduct the occurring volume flow (including the maximum possible refilling volume) up to
the 1.1-fold of the maximum operation pressure;
• Have a proven reliability or are certified.
Do not narrow the inlet or outlet piping of the safety valve.
2.5.2. Avoiding excessive temperature
Appropriate safety components:
• Guarantee that the operation temperature range is not exceeded at any point of the system;
• Are approved and tested on operation safety.
Activate the pressure and temperature safety devices and check them regular on
proper working.
2.6. Signs on the automat
The signs on the automat are part of the safety provisions. Do not cover or remove the signs. Inspect
regularly if the signs are present and legible. Replace or repair signs that are illegible or damaged.
A
B
C
D
On the type plate the following
product information can be found:
A: Automat type (ENA 10, 20 or 30)
B: Automat serial number
C: Permissible working overpressure
D:Permissible working temperature
Do not use the automat
when the
specifications on the type
plate dier from the order.
3. Description
3.1. Component overview
8 9
15
16
↑
↓
ENA 30
1
4
10
11
12
13
14
5 8 9
2
7
6
3
↑
↓
ENA 7-20
NO. Description
1 Vent. device 9 Connection to system Rp 1"
2 Pressure gauge 10 Connection from system Rp 3/4" *
3 SCU controller 11 Terminal box pump 1
4 Vacuum tank 12 Pump 1
5 Vacuum pressure switch 13 Connection for refill Rp 3/4"
6 Solenoid valve N.O. 14 Solenoid valve N.C.
7 Float switch 15 Terminal box pump 2
8 Pressure sensor 16 Pump 2
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