manualshive.com logo in svg

Eaton TRIPP-LITE N600H-0072-3, Manual, Page: 41 / 96

Share
Download
Eaton TRIPP-LITE N600H-0072-3 Manual Download Page 41

41

1. Ensamble del Cierre

11

 

Asegure el dispositivo de sujeción superior (Figura 1-12).

Figura 1-12: Asegurar el dispositivo de sujeción superior

12

 

Fije la cuña (Figura 1-13).

Figura 1-13: Fijar la cuña

23-04-061-93-47BC_revA.indb   41

23-04-061-93-47BC_revA.indb   41

1/30/2024   3:26:25 PM

1/30/2024   3:26:25 PM

Summary of Contents for TRIPP-LITE N600H-0072-3

Page 1: ...1 Models N600H 0072 3 Fiber Splice Horizontal Closure Espa ol 33 Fran ais 65 04 061 93 47BC_revA indb 1 04 061 93 47BC_revA indb 1 1 30 2024 3 26 20 PM 1 30 2024 3 26 20 PM...

Page 2: ...ing a flat head tool pry open the buckles of the closure Figure 1 1 Figure 1 1 Open the buckle of the closure 1 Closure Assembly 04 061 93 47BC_revA indb 2 04 061 93 47BC_revA indb 2 1 30 2024 3 26 20...

Page 3: ...round the limiting button to turn over all the splicing trays from the bottom Figure 1 2 Figure 1 2 Turn over all the trays 1 Closure Assembly 04 061 93 47BC_revA indb 3 04 061 93 47BC_revA indb 3 1 3...

Page 4: ...e for uncut cable or branching cable Figure 1 3 Remove the nut component 3 Loosen the two screws of the nut component then open the nut component Figure 1 4 Figure 1 4 Open the nut component 1 Closure...

Page 5: ...gure 1 5 Loosen the screws 5 Cut open the circular sealing ring in a horizontal direction Figure 1 6 Figure 1 6 Cut open the sealing ring 1 Closure Assembly 04 061 93 47BC_revA indb 5 04 061 93 47BC_r...

Page 6: ...e the upper clamping 7 Remove the upper and lower hinges if using a cable with a larger diameter Figure 1 8 Figure 1 8 Remove upper and lower hinge for large diameter cable 1 Closure Assembly 04 061 9...

Page 7: ...er of the cable from the stripped cable sheath to 2 4 in 60 mm to fix the cable Figure 1 10 Figure 1 10 Cut the strength member Bare fiber loose tube Strength member 60 mm Cable sheath Bare fiber prot...

Page 8: ...ength member with the screw Figure 1 11 Note To enhance cable surface friction use sandpaper Description Sandpaper Quantity 1 Pc Figure 1 11 Secure the strength member 1 Closure Assembly 04 061 93 47B...

Page 9: ...upper press clamping Figure 1 12 Figure 1 12 Secure the upper press clamping 12 Secure the wedge Figure 1 13 Figure 1 13 Secure the wedge 04 061 93 47BC_revA indb 9 04 061 93 47BC_revA indb 9 1 30 20...

Page 10: ...1 14 Figure 1 14 Store the loose tube 14 Manage cable with the magic band tie Figure 1 15 Figure 1 15 Manage cable with magic band tie 1 Closure Assembly 04 061 93 47BC_revA indb 10 04 061 93 47BC_re...

Page 11: ...15 Install the pass through cable on the other side Figure 1 16 Figure 1 16 Install the pass through cable on the other side 04 061 93 47BC_revA indb 11 04 061 93 47BC_revA indb 11 1 30 2024 3 26 21 P...

Page 12: ...con oil into the grommet Description Silicon Oil Quantity 1 Pc Description 8 14 Single Hole Grommet Quantity 4 Pcs Description 14 18 Single Hole Grommet Quantity 4 Pcs Figure 1 17 Cut small hole into...

Page 13: ...grommet squeeze component and nut component Figure 1 18 Description Squeeze Component Quantity 4 Pcs Figure 1 18 Run pass through cable 1 Closure Assembly A A 04 061 93 47BC_revA indb 13 04 061 93 47B...

Page 14: ...1 19 Figure 1 19 Fasten the screws 19 Push and screw all the components for the pass through cable inward Figure 1 20 Figure 1 20 Install all the components 1 Closure Assembly 04 061 93 47BC_revA ind...

Page 15: ...If a single hole grommet does not provide a seal a choke plug should be inserted into this hole Description Choke Plug 12 5 mm Quantity 6 Pcs Figure 1 21 Seal the unused pass through cable hole 1 Clo...

Page 16: ...e Figure 1 22 Note The cable entry is only suitable for branching cable Figure 1 22 Remove the nut 2 Loosen the two screws to remove the upper press clamping Figure 1 23 Figure 1 23 Remove the press c...

Page 17: ...e 4 Cut the strength member of the cable from the stripped cable sheath 2 4 in 60 mm to fix the cable Figure 1 25 Figure 1 25 Strength member Strength member Bare fiber Bare fiber protective sleeve 1...

Page 18: ...r press clamping Figure 1 27 Note When bare fiber cable is used an EVA tube should be applied to protect the bare fiber and insulation tape should be used to wrap the EVA tube and cable Description In...

Page 19: ...ure 1 28 Figure 1 28 Push all the components 8 For the unused branching cable hole loosen the nut then insert the sealing plug squeeze component and the nut Screw the nut inward to seal the hole Figur...

Page 20: ...stripper Pull out the loose tube then clean the bare fiber with cleaning paper Figure 1 30 Description Clean Paper Quantity 1 Pc Figure 1 30 Strip the fiber 1 Closure Assembly 04 061 93 47BC_revA indb...

Page 21: ...fiber in the splice tray with a tie Figure 1 31 Description Nylon Cable Tie Quantity 20 Pcs use as required Description EVA Tube Quantity 1 Roll Figure 1 31 Secure the EVA tube and fiber B A A B 04 06...

Page 22: ...icing tray Figure 1 32 Description Single Splicing Protective Tube Quantity 72 Pcs Figure 1 32 Coil the bare fiber 1 Closure Assembly A A 04 061 93 47BC_revA indb 22 04 061 93 47BC_revA indb 22 1 30 2...

Page 23: ...the splicing tray and secure it with the bondage belt Figure 1 33 Figure 1 33 Close the splicing tray cover 1 Closure Assembly 04 061 93 47BC_revA indb 23 04 061 93 47BC_revA indb 23 1 30 2024 3 26 23...

Page 24: ...er Close the buckles that connect the cover and the bottom case according to the sequence shown in Figure 1 34 Figure 1 34 Close the buckles 1 Closure Assembly 1 4 8 6 2 15 16 5 9 13 12 14 10 11 7 3 0...

Page 25: ...iption Aerial Mounting Hardware Quantity 1 Set Figure 2 1 Aerial installation accessory 1 Fix the aerial clasps into the slots at the edge of the bottom base Figure 2 2 Figure 2 2 Install the clasps 2...

Page 26: ...closure to the wire and fasten the bolts Figure 2 3 Figure 2 3 Mount the closure to the wire 2 Closure Installation 04 061 93 47BC_revA indb 26 04 061 93 47BC_revA indb 26 1 30 2024 3 26 23 PM 1 30 2...

Page 27: ...Figure 2 4 Figure 2 4 Wall mounting accessory 1 Drill two holes in the wall using a percussion drill Figure 2 5 Figure 2 5 Drill holes in the wall Wall 2 Closure Installation 04 061 93 47BC_revA indb...

Page 28: ...ed holes Rotate the bolt clockwise to make the expansion sleeve wholly expanded then rotate the nut counterclockwise and remove the spring washer flat washer and nut Figure 2 7 Figure 2 7 Install the...

Page 29: ...ase Figure 2 8 Figure 2 8 Install the clasps 5 Put the closure with the wall mounted clasps onto the wall Figure 2 9 Figure 2 9 Put the closure onto wall 2 Closure Installation 04 061 93 47BC_revA ind...

Page 30: ...amaged by accident negligence or misapplication or has been altered or modified in any way EXCEPT AS PROVIDED HEREIN WE MAKE NO WARRANTIES EXPRESS OR IMPLIED INCLUDING WARRANTIES OF MERCHANTABILITY AN...

Page 31: ...31 04 061 93 47BC_revA indb 31 04 061 93 47BC_revA indb 31 1 30 2024 3 26 23 PM 1 30 2024 3 26 23 PM...

Page 32: ...om 2024 Eaton All Rights Reserved Publication No 23 04 061 93 47BC_RevA January 2024 Eaton is a registered trademark All trademarks are property of their respective owners 04 061 93 47BC_revA indb 32...

Page 33: ...33 Modelos N600H 0072 3 Cierre Horizontal del Empalme de Fibra English 1 Fran ais 65 04 061 93 47BC_revA indb 33 04 061 93 47BC_revA indb 33 1 30 2024 3 26 24 PM 1 30 2024 3 26 24 PM...

Page 34: ...enta de cabeza plana haga palanca para abrir los broches del cierre Figura 1 1 Figura 1 1 Abrir el broche del cierre 1 Ensamble del Cierre 04 061 93 47BC_revA indb 34 04 061 93 47BC_revA indb 34 1 30...

Page 35: ...n limitador para voltear todas las bandejas de empalme desde la parte inferior Figura 1 2 Figura 1 2 Voltear todas las bandejas 1 Ensamble del Cierre 04 061 93 47BC_revA indb 35 04 061 93 47BC_revA i...

Page 36: ...ables sin cortar o cables de derivaci n Figura 1 3 Retirar el componente de la tuerca 3 Afloje los dos tornillos del componente de la tuerca y bralo Figura 1 4 Figura 1 4 Abrir el componente de la tue...

Page 37: ...ura 1 5 Aflojar los tornillos 5 Corte la junta de sellado circular en sentido horizontal Figura 1 6 Figura 1 6 Cortar la junta de sellado 1 Ensamble del Cierre 04 061 93 47BC_revA indb 37 04 061 93 47...

Page 38: ...tivo de sujeci n superior 7 Retire las bisagras superior e inferior si utiliza un cable de mayor di metro Figura 1 8 Figura 1 8 Retirar las bisagras superior e inferior para cables de mayor di metro 1...

Page 39: ...rzo del cable desde el revestimiento pelado hasta 60 mm 2 4 pulg para fijar el cable Figura 1 10 Figura 1 10 Cortar el elemento de refuerzo Tubo holgado de fibra desnuda Elemento de refuerzo 60 mm Rev...

Page 40: ...illo Figura 1 11 Nota Para mejorar la fricci n de la superficie del cable utilice papel de lija Descripci n Papel de lija Cantidad 1 unidad Figura 1 11 Fijar el elemento de refuerzo 1 Ensamble del Cie...

Page 41: ...tivo de sujeci n superior Figura 1 12 Figura 1 12 Asegurar el dispositivo de sujeci n superior 12 Fije la cu a Figura 1 13 Figura 1 13 Fijar la cu a 04 061 93 47BC_revA indb 41 04 061 93 47BC_revA ind...

Page 42: ...Figura 1 14 Guarde el tubo holgado 14 Administre el cable con la brida m gica Figura 1 15 Figura 1 15 Administrar el cable con la brida m gica 1 Ensamble del Cierre 04 061 93 47BC_revA indb 42 04 061...

Page 43: ...ierre 15 Instale el cable de paso en el otro extremo Figura 1 16 Figura 1 16 Instalar el cable de paso en el otro extremo 04 061 93 47BC_revA indb 43 04 061 93 47BC_revA indb 43 1 30 2024 3 26 25 PM 1...

Page 44: ...bles Descripci n Aceite de silicona Cantidad 1 unidad Descripci n Pasacables de un solo orificio de 8 a 14 Cantidad 4 unidades Descripci n Pasacables de un solo orificio de 8 a 14 Cantidad 4 unidades...

Page 45: ...mponente de compresi n y el componente de tuerca Figura 1 18 Descripci n Componente de compresi n Cantidad 4 unidades Figura 1 18 Pasar el cable de paso 1 Ensamble del Cierre A A 04 061 93 47BC_revA i...

Page 46: ...1 19 Figura 1 19 Ajustar los tornillos 19 Empuje y atornille todos los componentes del cable de paso hacia adentro Figura 1 20 Figura 1 20 Instalar todos los componentes 1 Ensamble del Cierre 04 061 9...

Page 47: ...un solo orificio no proporciona un sellado adecuado se debe insertar un tap n de estrangulamiento en este agujero Descripci n Tap n de estrangulamiento 12 5 mm Cantidad 6 unidades Figura 1 21 Sellar e...

Page 48: ...La entrada de cable solo es adecuada para el cable de derivaci n Figura 1 22 Retirar la tuerca 2 Afloje los dos tornillos para retirar el dispositivo de sujeci n superior Figura 1 23 Figura 1 23 Retir...

Page 49: ...4 Corte el elemento de refuerzo del cable desde la funda pelada a 60 mm 2 4 pulg para fijar el cable Figura 1 25 Figura 1 25 Elemento de refuerzo Elemento de refuerzo Fibra desnuda Funda protectora de...

Page 50: ...1 27 Nota Cuando se utiliza un cable de fibra desnuda se debe aplicar un tubo de EVA para proteger la fibra desnuda y se debe utilizar cinta de aislamiento para envolver el tubo de EVA y el cable Desc...

Page 51: ...ujar todos los componentes 8 Para el orificio no utilizado del cable de derivaci n afloje la tuerca luego inserte el tap n de sellado el componente de compresi n y la tuerca Enrosque la tuerca hacia d...

Page 52: ...lgados Retire el tubo holgado y limpie la fibra desnuda con papel de limpieza Figura 1 30 Descripci n Papel de limpieza Cantidad 1 unidad Figura 1 30 Separar la fibra 1 Ensamble del Cierre 04 061 93 4...

Page 53: ...en la bandeja de empalme con una brida Figura 1 31 Descripci n Brida de Nylon Cantidad 20 unidades utilizar seg n sea necesario Descripci n Tubo de EVA Cantidad 1 Rollo Figura 1 31 Fijar el tubo de E...

Page 54: ...empalme Figura 1 32 Descripci n Tubo protector de empalme simple Cantidad 72 unidades Figura 1 32 Enrollar la fibra desnuda 1 Ensamble del Cierre A A 04 061 93 47BC_revA indb 54 04 061 93 47BC_revA in...

Page 55: ...de empalme y aseg rela con la correa de sujeci n Figura 1 33 Figura 1 33 Cerrar la tapa de la bandeja de empalme 1 Ensamble del Cierre 04 061 93 47BC_revA indb 55 04 061 93 47BC_revA indb 55 1 30 202...

Page 56: ...bierta Cierre los broches que unen la cubierta y la base inferior seg n la secuencia mostrada en la Figura 1 34 Figura 1 34 Cerrar los broches 1 Ensamble del Cierre 1 4 8 6 2 15 16 5 9 13 12 14 10 11...

Page 57: ...n Accesorio de Instalaci n A rea Cantidad 1 juego Figura 2 1 Accesorio de instalaci n a rea 1 Fije los ganchos a reos en las ranuras del borde de la base inferior Figura 2 2 Figura 2 2 Instalaci n de...

Page 58: ...erre en el cable y apriete los pernos Figura 2 3 Figura 2 3 Instalaci n del cierre en el cable 2 Instalaci n del cierre 04 061 93 47BC_revA indb 58 04 061 93 47BC_revA indb 58 1 30 2024 3 26 27 PM 1 3...

Page 59: ...4 Figura 2 4 Accesorio de montaje en pared 1 Perfore dos agujeros en la pared con un taladro de percusi n Figura 2 5 Figura 2 5 Perforaci n de orificios en la pared Pared 2 Instalaci n del cierre 04...

Page 60: ...o en el sentido de las manecillas del reloj para que el manguito de expansi n se expanda totalmente luego gire la tuerca en el sentido contrario a las agujas del reloj y retire la arandela el stica la...

Page 61: ...2 8 Figura 2 8 Instalaci n de los ganchos 5 Coloque el cierre con los ganchos de instalaci n en la pared sobre la pared Figura 2 9 Figura 2 9 Colocaci n del cierre en la pared 2 Instalaci n del cierr...

Page 62: ...nte negligencia o mal uso o hayan sido alterados o modificados de alguna manera SALVO POR LO QUE SE INDIC AQU NO OTORGAMOS GARANT AS EXPRESAS O IMPL CITAS INCLUIDAS GARANT AS DE COMERCIABILIDAD Y ADEC...

Page 63: ...63 04 061 93 47BC_revA indb 63 04 061 93 47BC_revA indb 63 1 30 2024 3 26 28 PM 1 30 2024 3 26 28 PM...

Page 64: ...ton Todos los derechos reservados Publicaci n n 23 04 061 93 47BC_RevA Enero 2024 Eaton es una marca registrada Todas las marcas registradas pertenecen a sus respectivos propietarios 04 061 93 47BC_re...

Page 65: ...65 Mod les N600H 0072 3 Fermeture horizontale d pissure de fibre English 1 Espa ol 33 04 061 93 47BC_revA indb 65 04 061 93 47BC_revA indb 65 1 30 2024 3 26 28 PM 1 30 2024 3 26 28 PM...

Page 66: ...un outil t te plate ouvrir les boucles de la fermeture figure 1 1 Figure 1 1 Ouvrir la boucle de la fermeture 1 Assemblage de la fermeture 04 061 93 47BC_revA indb 66 04 061 93 47BC_revA indb 66 1 30...

Page 67: ...outon de limitation pour retourner tous les plateaux d pissure par le bas figure 1 2 Figure 1 2 Retourner tous les plateaux 1 Assemblage de la fermeture 04 061 93 47BC_revA indb 67 04 061 93 47BC_revA...

Page 68: ...e aux c bles non coup s ou aux c bles de d rivation Figure 1 3 Retirer l crou 3 Desserrer les deux vis de l crou puis ouvrir l crou figure 1 4 Figure 1 4 Ouvrir l crou 1 Assemblage de la fermeture 04...

Page 69: ...esserrer les vis 5 D couper la bague d tanch it circulaire dans le sens horizontal figure 1 6 Figure 1 6 D couper la bague d tanch it 1 Assemblage de la fermeture 04 061 93 47BC_revA indb 69 04 061 93...

Page 70: ...7 Retirer les charni res sup rieures et inf rieures en cas d utilisation d un c ble de plus grand diam tre figure 1 8 Figure 1 8 Retirer les charni res sup rieures et inf rieures pour les c bles de gr...

Page 71: ...ble partir de la gaine d nud e jusqu 2 4 po 60 mm pour fixer le c ble figure 1 10 Figure 1 10 Couper la membrure de force Fibre nue tube libre Membrure de force 60 mm Gaine du c ble Manchon de protect...

Page 72: ...vis figure 1 11 Remarque Pour am liorer le frottement de la surface du c ble utiliser du papier de verre Description Papier de verre Quantit 1 pi ce Figure 1 11 Fixer la membrure de force 1 Assemblage...

Page 73: ...rrage sup rieur de la presse figure 1 12 Figure 1 12 Fixer le serrage sup rieur de la presse 12 Fixer le coin figure 1 13 Figure 1 13 Fixer le coin 04 061 93 47BC_revA indb 73 04 061 93 47BC_revA indb...

Page 74: ...re 1 14 Entreposer le tube libre 14 G rer le c ble l aide de l attache magique figure 1 15 Figure 1 15 G rer le c ble l aide de l attache magique 1 Assemblage de la fermeture 04 061 93 47BC_revA indb...

Page 75: ...la fermeture 15 Installer le passe c ble de l autre c t figure 1 16 Figure 1 16 Installer le passe c ble de l autre c t 04 061 93 47BC_revA indb 75 04 061 93 47BC_revA indb 75 1 30 2024 3 26 30 PM 1...

Page 76: ...l huile de silicone dans le passe fil Description Huile de silicone Quantit 1 pi ce Description 8 14 Passe fil trou simple Quantit 4 pi ces Description 14 18 Passe fil trou simple Quantit 4 pi ces Fi...

Page 77: ...mposant de compression et de l crou figure 1 18 Description Composant de compression Quantit 4 pi ces Figure 1 18 Faire passer le passe c ble 1 Assemblage de la fermeture A A 04 061 93 47BC_revA indb...

Page 78: ...19 Fixer les vis 19 Pousser et visser tous les composants du passe c ble vers l int rieur figure 1 20 Figure 1 20 Installer tous les composants 1 Assemblage de la fermeture 04 061 93 47BC_revA indb 7...

Page 79: ...passe fil trou simple n assure pas l tanch it un bouchon d tanch it doit tre ins r dans ce trou Description Bouchon d tanch it 12 5 mm 1 2 po Quantit 6 pi ces Figure 1 21 Obturer le trou du passe c bl...

Page 80: ...de c ble ne convient qu aux c bles de d rivation Figure 1 22 Retirer l crou 2 Desserrer les deux vis pour retirer le dispositif de serrage sup rieur de la presse figure 1 23 Figure 1 23 Retirer le di...

Page 81: ...er la membrure de force du c ble partir de la gaine d nud e de 2 4 po 60 mm pour fixer le c ble figure 1 25 Figure 1 25 Membrure de force Membrure de force Fibre nue Gaine de protection pour fibre nue...

Page 82: ...figure 1 27 Remarque En cas d utilisation d un c ble fibres nues un tube EVA doit tre appliqu pour prot ger les fibres nues et du ruban isolant doit tre utilis pour envelopper le tube EVA et le c ble...

Page 83: ...1 28 Pousser tous les composants 8 Pour le trou de d rivation du c ble non utilis desserrer l crou puis ins rer le bouchon d tanch it serrer le composant et l crou Visser l crou vers l int rieur pour...

Page 84: ...Retirer le tube libre puis nettoyer la fibre nue avec du papier de nettoyage figure 1 30 Description Papier de nettoyage Quantit 1 pi ce Figure 1 30 D nuder la fibre 1 Assemblage de la fermeture 04 0...

Page 85: ...teau d pissure l aide d une attache Figure 1 31 Description Attache de c ble en nylon Quantit 20 pi ces utiliser selon les besoins Description EVA Tube Quantit 1 rouleau Figure 1 31 Fixer le tube et l...

Page 86: ...e Figure 1 32 Description Tube de protection pour pissure simple Quantit 72 pi ces Figure 1 32 Enrouler la fibre nue 1 Assemblage de la fermeture A A 04 061 93 47BC_revA indb 86 04 061 93 47BC_revA in...

Page 87: ...ge et le fixer l aide de la ceinture de contrainte figure 1 33 Figure 1 33 Fermer le couvercle du plateau d pissage 1 Assemblage de la fermeture 04 061 93 47BC_revA indb 87 04 061 93 47BC_revA indb 87...

Page 88: ...cle Fermer les boucles qui relient le couvercle et le bo tier inf rieur dans l ordre indiqu la figure 1 34 Figure 1 34 Fermer les boucles 1 Assemblage de la fermeture 1 4 8 6 2 15 16 5 9 13 12 14 10 1...

Page 89: ...age a rien Quantit 1 jeu Figure 2 1 Accessoires pour l installation a rienne 1 Fixer les fermoirs a riens dans les fentes situ es sur le bord de la base inf rieure figure 2 2 Figure 2 2 Installation d...

Page 90: ...eture sur le fil et fixer les boulons figure 2 3 Figure 2 3 Monter la fermeture sur le fil 2 Installation de la fermeture 04 061 93 47BC_revA indb 90 04 061 93 47BC_revA indb 90 1 30 2024 3 26 31 PM 1...

Page 91: ...4 Figure 2 4 Accessoire de montage mural 1 Percer deux trous dans le mur l aide d une perceuse percussion figure 2 5 Figure 2 5 Percer des trous dans le mur Mur 2 Installation de la fermeture 04 061...

Page 92: ...s aiguilles d une montre pour que le manchon d expansion se d ploie compl tement puis tourner l crou dans le sens inverse des aiguilles d une montre et retirer la rondelle lastique la rondelle plate e...

Page 93: ...e Figure 2 8 Figure 2 8 Installer les fermoirs 5 Placer la fermeture avec les fermoirs muraux sur le mur Figure 2 9 Figure 2 9 Placer la fermeture sur le mur 2 Installation de la fermeture 04 061 93 4...

Page 94: ...gligence ou une application abusive ou ayant t alt r ou modifi d une fa on quelconque SAUF AUX TERMES DES PR SENTES NOUS N METTONS AUCUNE GARANTIE EXPRESSE OU TACITE Y COMPRIS DES GARANTIES DE QUALIT...

Page 95: ...95 04 061 93 47BC_revA indb 95 04 061 93 47BC_revA indb 95 1 30 2024 3 26 32 PM 1 30 2024 3 26 32 PM...

Page 96: ...Tous droits r serv s Publication No 23 04 061 93 47BC_RevA Janvier 2024 Eaton est une marque d pos e Toutes les marques commerciales sont la propri t de leurs propri taires respectifs 04 061 93 47BC_...

Reviews:

No comments