Pilz PMCtendo SZ.41/0/1/2/7/K/H/60/00 - Manual (Page 41)

Operating Manual PMCtendo SZ 
1002405-EN-03
41
9 Technical data
9.4.3 Water cooling
Mechanical connection 
Inlet and outlet
Hose connector G1/8" (fittings) 
On connector side or opposite
Ambient temperature during operation +5°C to +40°C
Storage ambient temperature -30°C to +85°C, the coolant must be drained for temperatures be-
low 3°C
Coolant temperature at inlet +10°C to +35°C, max. 5 K smaller than ambient temperature
Winding excess temperature 100 K
Cooling circuit type Closed with heat exchanger,
pressure control valve in supply line,
do not use any nonferrous metals
Maximum operating pressure 3.5 bar
Coolant Clear, aerosol-free and free of dirt (provide particle filter if neces-
sary)
pH value 6,5–7,5
Hardness 8–14 dH°
Salt content Desalinated and demineralised, NaCl < 100 ppm
Corrosion protection Add anti-corrosion additive, max. proportion 25 %,
anti-corrosion agent must act neutrally against aluminium and cast
iron
Minimum coolant flow rate SZ.4: 4.5 l/min
SZ.5: 4.5 l/min
SZ.7: 5 l/min
SZ.8: 5 l/min
Nominal coolant flow rate SZ.4: 6 l/min
SZ.5: 6 l/min
SZ.7: 7.5 l/min
SZ.8: 7.5 l/min
Installation height ≤ 1000 m above sea level, no derating possible