HMP-1817E 6 (10/18)
4. Notes on operation
1) Cleaning inside the tank
Please clean the inside of tank before putting coolant into the tank.
We recommend a regular implement of a tank cleaning for damage prevention of the unit.
2) Putting coolant
a) Please put clean coolant sufficiently.
b) If putting coolant by electrical pump, etc., the coolant may foam.
In this case, operate the pump after foam fade outs.
3) Confirmation of rotating direction
! CAUTION
: If operating with reverse rotation, pump function may be impaired.
Please confirm the rotating direction by that of motor fan. The correct rotating direction of
motor fan is clockwise.
When checking the rotation, make sure to operate the motor with no inching. Make sure that
operating time of motor during inching operation is 0.5 1 second.
4) Start the operation of pump
! CAUTION
: Please avoid on-load start. On-load start may cause the damage
inside the pump.
! CAUTION
: Please avoid to operate in the condition of no coolant in the pump.
it may cause the damage inside the pump.
Before the start of the pump, air in the pump must be released.
For the first operation of the unit or operation after replacement of coolant or cleaning of suction
filter, please release the air as follows and start the continuous operation.
Start the pump by inching
a) Check the tank is filled with coolant
b) Operate the motor with no load for 5 10 times intermittently. Make sure that
operating time of motor during intermittent operation is 0.5 1 second.
c) When you repeat inching, noise of suction of air will fade out gradually. After the
noise fade outs, start the continuous operation. If noise of suction of air does not
fade out,there may be the suction port is not immerse in coolant, therefore please
increase quantity of infusion of coolant.