Cooling; Water Connection To Psu - Bosch PSU 5000 Series Instructions For Assembly And Operation Manual

Installation

Cooling

10.3 Cooling
10.3.1

Water connection to PSU

10--8
PSU 5000 / PSG 3000
Instructions for Assembly and Operation
NOTE
-- Damage to property in the event of inappropriate/insufficient module cooling!
Water- -cooled PSU and PSG modules may only be operated when the cooling
water circuit is active! Condensation is not permitted on water--carrying compo-
nents.
The temperature in the installation room of air- -cooled modules must be within
the specified limits. Furthermore, these modules may only be operated with
"forced cooling" (with fan cowl). Cooling by convection is not sufficient!
-- Damage to property through insufficient water quality in the cooling water cir-
cuit!
Deposits in the cooling system may reduce the water flow, thus impairing the
performance of the cooling system with time.
Therefore, you should ensure that your cooling water has the following proper-
ties:
-- pH value: 7 to 8.5
-- Degree of hardness Dmax: 10 German degrees
(1 German degree = 1.25 British degrees = 1.05 US degrees = 1.8 French
degrees)
-- Chlorides: max. 20 mg/l
-- Nitrates: max. 10 mg/l
-- Sulfates: max. 100 mg/l
-- Insoluble substances: max. 250 mg/l
Tap water usually meets these requirements. However, an algicide should be
added.
The location of the water connections is shown on the dimension drawings in Sec-
tion 10.1, "Dimensions of PSU" and Section 10.2, "Dimensions of PSG".
The heat sink of the PSU modules is internally connected to the protective earth
conductor.
Maximum water inlet temperature: 30 ûC
Water connection: M 16 x 1.5, external thread with taper steps (DIN EN 560, nut:
DIN 13--6)
PSU
Heat sink
PSU
washer
Hose nozzle
Union nut
M16x1.5
Hose
internal ø 6.3
1070 078 224- -108