Hot Spring 73995 Pressure Switch

$60.15
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SKU
73995
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Hot Spring 73995 Pressure Switch
Hot Spring 73995 Pressure Switch

The pressure switch is a safety device designed to prevent overheating of the spa heater should a low or no-flow condition exist in the spa.

Electrical Operation

The pressure switch is located in the heater circuit. When the switch is closed (proper flow), voltage is transferred to the heater circuit when the control thermostat calls for heat. Activating the relay allows the heater to activate. When the switch is open (low flow), voltage to the heater circuit is interrupted regardless of the state of the control thermostat. This prevents the heater from activating until the low flow condition has been resolved.

WARNING: The pressure switch is a safety device and should never be bypassed or tampered with. Never attempt to calibrate the pressure switch.

The following are some of the common causes of pressure switch tripping:

  • dirty or clogged filters
  • clogged heater return
  • low water level
 
Removal
  1. Disconnect power to the spa.
  2. Remove the equipment compartment door.
  3. Drain the spa or use the plug system.
  4. Open the drain valve to bleed the water out of the plumbing.
  5. Open the control box lid.
  6. Disconnect the pressure switch connection wires from the pressure switch.
  7. Unscrew the pressure switch from the heater and remove any residual Teflon tape from the threads of the heater body where the pressure switch was connected.
  8. Reverse the removal procedure to install the pressure switch in the control box.
    NOTE: Wrap one piece of Teflon tape (in the opposite direction of the threads) three times around the pressure switch threads before installation. When screwing the new pressure switch into the heater, DO NOT use pliers. Grasp the body of the pressure switch, and hand tighten only. After you are finished with the installation, switch the jet pump to high speed and check the pressure switch for leaks.

 73995 Pressure Switch is for the following models:     

 

Make Model Date Range
Hot Spot  Relay 2010-Current
Hot Spot  Rhythm  2010-Current
Hot Spot  Tempo  2010-Current 
Hot Spot  SX  2011-Current 
Hot Spot  TX  2011-Current 
Hot Spot  Mallorca  2006-2009
Hot Spot  Sorrento  2006-2009
Hot Spot  La Palma  2008-2009 
Hot Spot  Tobago  2006-2009
Hot Spot  Trinidad  2006-2009 
Solana  SX  2006-2010
Solana  TX  2006-2010 
Solana  RX  2006-2009  
Caldera Palatino  2010-Current 
Caldera  Marino  2010-Current 
Caldera  Vanto  2011-Current 
Caldera  Aventine  2006-Current
Caldera  Cumberland  2006-2009
Caldera  Olympia  2006-2009
Caldera  Tarino  2013-Current 
Caldera  C 30  2006-2009
Caldera  San Gabriel  2008-2008 
Caldera  Oasis  2006-2009
Caldera  C 45  2006-2009 

 

 

Specifications

 

Item Description Part #
1 Control Box 76840
2 Kit Control 76843
3 Fuse 25A/ SC Time Delay 71618
4 Control Thermistor 72493
5 Split Nut Union 2" 33761
6 Heater Assy 73994
7 Pressure Switch 73995
8 Hi-Limit Thermistor 73992
9 Tailpiece Heater 73905
10 O-Ring Tail Piece 34447

 

 

Item Description Part #
1 Control Box HS Hawk DOM 12 76840
2 Control Panel HS Hawk CG 12 76843
3 Fuse 25A/300V SC Time Delay 71618
4 Control Thermistor 72493
5 Pressure Switch 73995
6 Light Adaptor Eagle/Hawk 76860
7 Hi-Limit Thermistor 73992
8 Kit 12C Comm Hub 8 Port 74150
9 Power Jumper 2 Pin 39192

 

 

Item Description Part #
1 Control Box Use 76840
2a Kit Control Panel Hot Spot ACR Use 76843
2b Control Head (SX & TX only) Use 76843
3 Fuse 25A/300V SC Time Delay 71618
4 Control Thermistor 72493
5 Split Nut Union 2" 33761
6 Heater Assy 73994
7 Pressure Switch 73995
8 Hi Limit Thermistor 73992
9 Tailpiece Heater 70905
10 O-Ring Tail Piece 34447

 

  

Item Description Part #
1 15 Amp/ 115v GFCI w/Cover 37870
2 Control Box Use 76840
3 Fuse 25A/300V SC Time Delay 71618
4 Control Thermistor 72493
5 Split Nut Union 2" 33761
6 Heater Assy 73994
7 Presssure Switch 73995
8 Hi-Limt Thermistor 73992
* Tail Piece Heater 70905
* O-Ring Tail Piece 34447

* Non-Illistrated Part

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