The BFP mechanical seals coolers

The unit we operate and maintain is equipped with 3 boiler feed pumps.
Two of them are turbine driven and the third one is motor driven.
To prevent feed water going out of the pump the mechanical seal is in place.
The temperature of the feed water is 160 C deg (at full load - 600 MW it can be even 180 C deg)
The temp of the BFP casing is 136/132 C deg (lower part/upper part respectively).
The original desing of the BFP include the cooling circulation of the mechanical seals:

The reason of this cooling is simple the mechanical seals OEM put the remark in seals manual that seals working temp should not be higher than 80 C deg (at 90 the manual pump trip should be applied).
The eraction team has done some modification in the cooling system and what we have on site is:

  There is no cooling provided and the working temp. of mechanical seals is 50 C deg than it was designed. Definitely, it is going to affect seals lift time. Our proposal is to put the coolers back in place according to OEM design.
We will see what will  happen