TAWI VM30 User Manual page 5

4. TAWI strongly recommends that the PTC is con-
nected to a thermal relay for overheating protec-
tion (e). Wait at least 60 seconds and let the fan
stop before turning it on again (f).
5. Remove the vacuum and pressure covers (g).
6. Verify function of the vacuum pump and that it
rotates in the clockwise direction (h). If the pump
rotates in the anti-clockwise direction, switch
electrical phases and test the pump again.
L1 L2 L3 d
U1 V1 W1
M
3
RECOMMENDATION
L1 L2 L3
I > I > I >
U1 V1 W1
M
3
1
ON (I)
OFF (O)
60s
g
h
e
M
3
u
PTC
f
2 MAX 10/h
5