TM 5-3895-374-24-2 Table 2 Voltage Service Capacitance (mF) (nonpolarized) 120 VAC Resistance None Required 240 VAC Resistance 0.1 120 VAC Relays 0.001 to 0.01 240 VAC Relays 0.001 to 0.01 15-25 VAC Relays 0.02 120 VAC Motor Use Relay 240 VAC Motor Use Relay TESTING AND ADJUSTMENT The  arrow  on  the  head  of  the  controller  indicates  the direction   to   turn   the   adjusting   screw   to   increase   the temperature   setting.      Each   full   turn   of   the   adjusting sleeve   will   change   the   temperature   the   approximate amount shown in Table 3. After    the    controller    has     been     installed,     allow     the controller   to   operate   for   several   cycles   to   permit   the controlled system to stabilize.  Then adjust to the desired temperature.  Check the setting by cooling the system to ambient  temperature,  re-heating  it,  and  rechecking  the temperature.        Where    extremely    accurate    control    is desired, several adjustments may be necessary. However, once adjusted, the accuracy of the setting will be maintained. TESTING TEMPERATURE SET POINT The  set  point  temperature  is  the  temperature  at  which  the contacts   on   a   THERMOSWITCH   Controller   just   "make" (close).      All   controllers   are   set   at   room   temperature   [75 15°F  (24      8°C)]  unless  ordered  with  a  specific  factory setting (MOD 3). Testing  the  temperature  set  point  in  an  application,  under conditions  where  the  heat  source  is  remotely  located  from the controller, or when ambient temperature conditions  are far   below   or   above   75°F   (240C),   may   give   misleading results.      In   some   cases,   this   has   led   to   rejection   of controllers that were within proper setting tolerance.  If you require  temperature  set  point  testing,  Fenwal  recommends using  our  Model  80001-0  Test  Kit.    If  you  choose  to  build you  own  test  equipment,  we  recommend  that  you  contact your  Fenwal  representative  for  guidance  in  setting  up  a good thermal test system. Table 3 Tension Operated Compression Operated Catalog Number Approx. F° Per Full Turn of Adj. Sleeve Catalog Number Approx. F° Per Full Turn of Adj. Sleeve - - 13121-1 1000 15050 to 16051 165 - - 17000 to 17352 80-115 17021 to 17323 70-100 17800 125 17821 75 17802 160 17823 90 18000 to 18002 80-100 18021 to 18023 75-90 page 3 - 1151