Technibel PHT 13, Инструкция по установке

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GB
13
7.3 - STARTING-UP THE UNIT
• Power up the unit.
• Turn the water on.
• Start the appliance (see paragraph 5).
CAUTION:
On three-phase units, make sure that the phase rotation order is correct. If the rotation order is not respected, If
the rotation order is not respected, the phase-sequence controller restricts the unit from operating (indicator OK
off). To fix this, simply invert the 2 phases.
7.4 - CHECKS TO BE MADE
• Water flow-rate.
• The generator is equipped with 1/4 SAE pressure taps at the circulator inlet and outlet, to enable the pressure drop to be
measured using a hydraulic pressure gauge. Use the circulator curves in paragraph 10 to find the water flow rate.
Note:
In order for the device to operate correctly, there must be a constant flow of water. It must correspond to the data
given in the circulator graphs (in paragraph 10), particularly for the high temperature application (water outlet
greater than 55° C).
• Hydraulic circuit pressures.
• Control system operation.
• Sealing of the cooling circuit (according to the decree of 7th May 2007).
IMPORTANT:
If antifreeze is added (monopropylene glycol), a minium rate of 15% to 20% is needed to avoid any risk of corrosion.
• The LP pressure switch cuts at 0.5 bar.
• The HP pressure switch cuts at 29 bar.
8 - MAINTENANCE INSTRUCTIONS
8.1 - MAINTENANCE
All equipment must be properly maintained in order to provide optimum performance over time. Faulty maintenance can result in
the cancellation of the product guaranty. Depending on the products, maintenance operations consist in the cleaning of filters (air,
water), internal and external exchangers, casings, and the cleaning and protection of condensate tanks. Treating odours and the
disinfection of room surfaces and volumes also contributes to the cleanliness of the air breathed by users.
•
Carry out the following operations at least once a year
(the frequency depends on the installation and operating conditions):
- check for leaks on the refrigerating circuit (according to the order of 7th May 2007).
- check for traces of corrosion or oil stains around the refrigerating components,
- inspect the composition and the condition of the coolant and check that it does not contain traces of refrigerating fluid,
- cleaning the exchangers,
- checking the wear parts,
- checking the operating instructions and points,
- check the safety devices: particularly check that the high and low-pressure controllers are properly connected on the
refrigerating circuit and that they disengage the electrical circuit if triggered,
- de-dusting the electrical equipment cabinet,
- checking that the electrical connections are secure,
- checking the earth connection,
- check the hydraulic circuit (clean the filter, water quality, purge, flowrate, pressure, etc.).
• Before carrying out any work on the installation, make sure that it is switched off and that access to it is
prevented.
• Also check the discharge of the compressor capacitor for the single-phase voltages.
• Any work must be carried out by personnel qualified and authorised to work on this type of machine.
• Prior to all maintenance and servicing on the refrigerating circuit, one must first shut down the unit then wait a
few minutes before installing temperature or pressure sensors. Certain equipment, such as the compressor and
piping, may reach temperatures above 100°C and high pressures may lead to serious burns.
IMPORTANT NOTE