Starting; Start And Stop Frequency Control - Pentair VLR Serie Manual De Instrucciones

priming
primimg
cap
cap
drain cap drain cap

4.2 STARTING

We suggest carrying out the following operations for the first starting:
• Loosen the air valve (if present) or
open the priming cap
• If air comes out from the air valve,
carry out a new priming operation
• Tighten the air valve (if present) or
open the priming cap

4.3 START AND STOP FREQUENCY CONTROL

Carry out the following operations to control the frequency of starts and stops (control the machine operation for one hour):
A - For machines fitted with a motor having an absorbed power up to 4 kW, if the number of starts/hour is higher than 40,
adjust the machine control equipment so that the frequency is reduced.
B - For machines fitted with a motor having an absorbed power higher than 4 kW, if the number of starts/hour is higher than
30, adjust the machine control equipment so that the frequency is reduced.
DANGER
In case of high temperature fluids, wait for an adequate time for the fluid contained in the machine to cool before
unscrewing the screws securing the machine to piping.
DANGER
Always check the machine filling. Never start the machine before filling it up with fluid as shown in "Use", "Priming".
priming
primimg
cap
cap
drain cap
drain cap
VLRI – VLRX
• Open the gate on the delivery piping
• Start the machine
• Slowly open the gate on the delivery
piping in order to prevent water
hammering on the delivery piping
priming
air valve
cap
discharge
cap
VLR 32
• Adjust the thermal relay depending
on the current absorbed by the
machine
• Adjust the start and stop pressure of
the pressure gauge controlling the
machine operation, if present
GB
discharge
cap
41