Alfa Laval AquaFirst
Installation, service and operating instruction
46
14.10 Clean plate heat exchangers
Disassembling of the exchanger can be done very quickly according to the following procedure:
1. Isolate primary and secondary hydraulic circuits.
2. Open the purge cocks to drop the internal pressure of each sides.
3. Measure the distance between the two frames of the exchanger (Plate pack thickness) and note it
down.
4. Open the exchanger by unscrewing and removing the frame compression bolts.
Plates’ package thickness PHE in between frames
.
M3H FI2000 & FI4000
N type
thickness
7
17
27
45
M3H
0,5mm SS316
21,8
50,8
79,8
132,0
M6M MH/ML FI6000 & FI8000
N type
thickness
11
13
17
23
31
55
M6M MH/ML
0,5mm SS316
40
47
61
82
110
194
NOTE:
To avoid injuries owing to sharp edges, protective gloves should always be worn when handling
plates and protective sheets (like the ones for insulation).
5. Remove the plates without damaging the gaskets and note their orientation and position.
6. Clean the plates using a soft plastic brush and water or a solution of diluted acid in accordance with
PHE plate general cleaning instructions.
DO NOT USE
hydrochloric acid or any acid that could corrode stainless steel plates.
DO NOT USE
water with more than 330 ppm Cl when making a cleaning solution.
Nitric (for calcium carbonate), sulfamic (for calcium sulphate) or citric (for silt) acids can be used.
Concentration should not exceed 4% at 60°c. Protective gloves and glasses should always be
worn while these operations
.
Carefully rinse the plates with clean water after cleaning.
7. Remount the plates in the same order and at the same position they were before.
8. Screw the frames to the same distance they were before (Plate pack thickness dimension).
9. Clean the control sensor pocket.
For further information please refer to Alfa Laval Instruction Manual Ref. 1644725-01.
14.11 Technical data
Model 2000 & 4000
Model 6000 & 8000
Electrical data:
230V 50Hz 1-phase
230V 50Hz 1-phase
Main measurements:
Max.
485x535x970mm (LxWxH)
Max.
850x505x1315mm (LxWxH)
Weight:
70-103 kg
153-226 kg
Electric consumption, Pmax (W)
Pmax (W) 85-750*
Imax (A) 1,2-5,7*
Pmax (W) 380-1440*
Imax (A) 2,2-6,8*
*With Booster function activated
