M03Q40G6-03 30/07/08 pag 43
HIGH PRESSURE heating
1. high air temperature (see operating limits)
2. fans do not work, direction of rotation inverted
3. insufficient air flow to coil
4. not CONSTANT flow (for example, if the pumps
are turned off, certain areas of the plant are
excluded or included, other uses are isolated, etc)
5. dirty air filter
6. condensation gas in the cooling circuit o
7. Too much refrigerant
8. Check the trigger point for the manostat and
transducer
9. Manostat/transducer: loose electric
contacts/terminals, wiring cables interrupted
10. Check the manostat or transducer pressure
control point (deposits of oil, dirt, pin blocked
mechanically)
LOW PRESSURE heating
1. low water temperature (see operating limits)
2. insufficient water flow to the exchanger (high
thermal difference between input and output)
3. not CONSTANT flow (for example, if the pumps
are turned off, certain areas of the plant are
excluded or included, other uses are isolated, etc)
4. Dirt water filter / valves open /air bubbles in the
plant
5. dirty exchanger
6. Manostat/transducer: loose electric
contacts/terminals, wiring cables interrupted
7. refrigerant circuit empty, visible leaks of
refrigerant/oil, insufficient charge
8. dryer filter clogged
9. thermostatic device not operating correctly
10. Check the trigger point for the manostat and
transducer
11. Check the manostat or transducer pressure
control point (deposits of oil, dirt, pin blocked
mechanically)
CONVERSION TABLE FOR HEATER TEMPERATURE FOR TEMPERATURE PROBES NTC
To check the reliability of the probes in the event of alarm signals, the table below shows the relationship between the
temperature and the heater value in Ohms.
Temperature Heater Temperature Heater Temperature Heater Temperature Heater
°C
Ω
°C
Ω
°C
Ω
°C
Ω
-20,0 67732 1,0 26094 22,5 11013 43,5 5146
-19,5 66149 1,5 25543 23,0 10805 44,0 5063
-19,0 64604 2,0 25005 23,5 10601 44,5 4981
-18,5 63097 2,5 24480 24,0 10401 45,0 4901
-18,0 61627 3,0 23969 24,5 10206 45,5 4823
-17,5 60193 3,5 23469 25,0 10014 46,0 4747
-17,0 58794 4,0 22982 25,5 9826 46,5 4672
-16,5 57429 4,5 22506 26,0 9643 47,0 4599
-16,0 56098 5,0 22042 26,5 9462 47,5 4527
-15,5 54800 5,5 21589 27,0 9286 48,0 4458
-15,0 53534 6,0 21146 27,5 9113 48,5 4389
-14,5 52300 6,5 20714 28,0 8944 49,0 4322
-14,0 51096 7,0 20292 28,5 8778 49,5 4256
-13,5 49921 7,5 19880 29,0 8615 50,0 4192
-13,0 48777 8,5 19085 29,5 8456 50,5 4128
-12,5 47660 9,0 18701 30,0 8300 51,0 4066
-12,0 46571 9,5 18326 30,5 8147 51,5 4005
-11,5 45510 10,0 17960 31,0 7998 52,0 3944
-11,0 44475 10,5 17602 31,5 7852 52,5 3885
-10,5 43466 11,0 17252 32,0 7708 53,0 3826
-10,0 42482 11,5 16910 32,5 7568 53,5 3767
-9,5 41523 12,0 16576 33,0 7430 54,0 3710
-9,0 40588 12,5 16249 33,5 7296 54,5 3652
-8,5 39676 13,0 15930 34,0 7164 55,0 3595
-8,0 38787 13,5 15617 34,5 7035 55,5 3538
-7,5 37920 14,0 15312 35,0 6909 56,0 3482
-7,0 37075 14,5 15013 35,5 6786 56,5 3425
-6,5 36252 15,0 14720 36,0 6665 57,0 3368
-6,0 35448 15,5 14434 36,5 6547 57,5 3310
-5,5 34665 16,0 14155 37,0 6431 58,0 3252
-5,0 33902 16,5 13881 37,5 6318 58,5 3194
-4,5 33157 17,0 13613 38,0 6208 59,0 3135
-4,0 32431 17,5 13351 38,5 6100 59,5 3075
-3,5 31724 18,0 13094 39,0 5994 60,0 3014
-3,0 31034 18,5 12843 39,5 5891 60,5 2951
-2,5 30361 19,0 12597 40,0 5790 61,0 2888
-2,0 29704 19,5 12356 40,5 5692 61,5 2822
-1,5 29064 20,0 12120 41,0 5596 62,0 2755
-1,0 28440 20,5 11890 41,5 5502 62,5 2686
-0,5 27831 21,0 11663 42,0 5410 63,0 2615
0,0 27238 21,5 11442 42,5 5320 63,5 2542
0,5 26659 22,0 11225 43,0 5232 64,0 2466
To Next Page
Loading...
Need help?
General