DAU-20 Instruction Manual
7
4-3 Starting in Cold Ambient
In the cold ambient, there is a case to confront with difficulty in start because of hardened grease and
diaphragm of the bearing.
When it is difficult to start, follow the procedure described below.
1) Open the inlet port to atmosphere and repeat switch ON, OFF two or three times until the pump
starts.
If still it does not start, warm up the ambient temperature to 5
℃
(41 degF).
2) Operate the pump a few minutes while the inlet port is open so that the temperature of the pump
become warmer gradually.
3) When the pump is warmed up, operate the pump as usual.
