Hydropool Serenity Hot Tubs, Owner'S Manual

15 

FILLING, CHECKING AND STARTING YOUR HOT TUB  

FILLING 

• When adding water for the first time, the hot tub should be 

filled through the skimmer opening (helps to prevent air 
locks) using a standard garden hose, turning the tap on 
slowly to prevent damage to the surface by a jerking hose 
connection. 

 
• Pull up the handles on the intake and return gate valves 

and install the stem locks provided. (handles are pulled up 
when valves are open and pushed down when valves are 
closed) 

 
• Ensure the drain hose-bib is closed. 
 
• Ensure that all jets are open. See section 

JET &  

FEATURE OPERATION 

 
• Fill the hot tub to the recommended level, approximately 4 

inches above the top of the skimmer opening. 

 
CHECKING

• Although your hot tub was thoroughly water-tested in the 

factory, some loosening of fittings can occur during ship-
ping. Before any decking, tiling or carpeting is completed 
around the installation, fill and operate your hot tub to test 
for leaks (this ensures easy access and inexpensive cor-
rection). Check all union connections and plumbing for 
minor leaks. In the event of a leak, ensure all union con-
nections and pump plugs are tight and all o-rings/gaskets 
are in place. 

 
STARTING 

• Before applying voltage to power-up your hot tub, it is 

very important that you understand the sequence of 
events that occur when the system is activated in order 
that the pump can be primed efficiently and damage to 
the system can be avoided. 

 
• Turn the main power “on” at your electrical panel. 
 
• Follow the control instructions for your particular model 

hot tub to put the pump into low speed 

see section HY-

DROPOOL CONTROL SYSTEMS PUMP PRIMING/
RELEASING AN AIR LOCK 

• On some systems a message will appear on the display 

indicating that the system is in PUMP PRIMING MODE 
(

“RUN PMPS PURG AIR”)

. This mode will last for 4 min-

utes before automatically entering the normal operation 
mode. 

See complete details for your spa in section 

HYDROPOOL CONTROL SYSTEMS 

 
Definition

: ‘Priming’ a pump is a term used to describe the 

process in which air trapped in the plumbing and pump 
wet-end (referred to as an ‘air lock’) is released, allowing 
the pump to move water efficiently through the plumbing 

UNIONS 

GATE VALVE 

PROPER WATER LEVEL AT 

SKIMMER OPENING